TY  - JOUR
AU  - Cvijanović, Milena
AU  - Ajduković, Maja
AU  - Arntzen, Jan Willem
AU  - Ivanović, Ana
AU  - Vučić, Tijana
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5474
AB  - Micro-computed tomography is a powerful tool toward the detailed reconstruction of internal and external morphology, in particular for ossified and other dense tissues. Here, we document and compare the level of calcification in the skin of the head and the parotoids (the external skin glands) in males and females of common and spined toads, Bufo bufo and B. spinosus. In some anurans, including Bufo species, a specific acellular calcified tissue layer within the dermis has been documented (the Eberth-Katschenko, or EK-layer). By a combination of micro-computed tomography and classical histology, we detected additional calcium deposits located in the dermal layer stratum spongiosum, positioned above the EK-layer. We showed that the level of calcification and the presence of additional calcium deposits are size and sex related, increasing in the order B. bufo males, B. spinosus males, B. bufo females to B. spinosus females. The last of these groups is the least variable. Bufo spinosus females have dense calcium deposits in the parotoids and the dorsal and ventral skin. Three-dimensional volume renderings and cross-sectional slices obtained by micro-CT scanning indicate that this approach is a promising technique for further studies on bufonid skin anatomy and geographic variation in skin calcification.
PB  - John Wiley and Sons Inc
T2  - The Anatomical Record
T1  - Ladies in armor: A micro-computed tomographic study of skin calcification in European toads (genus Bufo)
DO  - 10.1002/ar.25170
ER  - 

@article{
author = "Cvijanović, Milena and Ajduković, Maja and Arntzen, Jan Willem and Ivanović, Ana and Vučić, Tijana",
year = "2023",
abstract = "Micro-computed tomography is a powerful tool toward the detailed reconstruction of internal and external morphology, in particular for ossified and other dense tissues. Here, we document and compare the level of calcification in the skin of the head and the parotoids (the external skin glands) in males and females of common and spined toads, Bufo bufo and B. spinosus. In some anurans, including Bufo species, a specific acellular calcified tissue layer within the dermis has been documented (the Eberth-Katschenko, or EK-layer). By a combination of micro-computed tomography and classical histology, we detected additional calcium deposits located in the dermal layer stratum spongiosum, positioned above the EK-layer. We showed that the level of calcification and the presence of additional calcium deposits are size and sex related, increasing in the order B. bufo males, B. spinosus males, B. bufo females to B. spinosus females. The last of these groups is the least variable. Bufo spinosus females have dense calcium deposits in the parotoids and the dorsal and ventral skin. Three-dimensional volume renderings and cross-sectional slices obtained by micro-CT scanning indicate that this approach is a promising technique for further studies on bufonid skin anatomy and geographic variation in skin calcification.",
publisher = "John Wiley and Sons Inc",
journal = "The Anatomical Record",
title = "Ladies in armor: A micro-computed tomographic study of skin calcification in European toads (genus Bufo)",
doi = "10.1002/ar.25170"
}

Cvijanović, M., Ajduković, M., Arntzen, J. W., Ivanović, A.,& Vučić, T.. (2023). Ladies in armor: A micro-computed tomographic study of skin calcification in European toads (genus Bufo). in The Anatomical Record
John Wiley and Sons Inc..
https://doi.org/10.1002/ar.25170

Cvijanović M, Ajduković M, Arntzen JW, Ivanović A, Vučić T. Ladies in armor: A micro-computed tomographic study of skin calcification in European toads (genus Bufo). in The Anatomical Record. 2023;.
doi:10.1002/ar.25170 .

Cvijanović, Milena, Ajduković, Maja, Arntzen, Jan Willem, Ivanović, Ana, Vučić, Tijana, "Ladies in armor: A micro-computed tomographic study of skin calcification in European toads (genus Bufo)" in The Anatomical Record (2023),
https://doi.org/10.1002/ar.25170 . .

TY  - JOUR
AU  - Vučić, Tijana
AU  - Ivanović, Ana
AU  - Ajduković, Maja
AU  - Bajler, Nikola
AU  - Cvijanović, Milena
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/4866
AB  - Two large-bodied newt species, Triturus ivanbureschi and T. macedonicus, hybridize in nature across the Balkan Peninsula. Consequences of hybridization upon secondary contact of two species include species displacement and asymmetrical introgression of T. ivanbureschi mtDNA. We set an experimental reciprocal cross of parental species and obtained two genotypes of F1 hybrids (with T. ivanbureschi or T. macedonicus mtDNA). When hybrids attained sexual maturity, they were engaged in mutual crossings and backcrossing with parental species. We followed reproductive traits over two successive years. Our main aim was to explore the reproductive success of F1 females carrying different parental mtDNA. Additionally, we tested for differences in reproductive success within female genotypes depending on the crossing with various male genotypes (hybrids or parental species). Both female genotypes had similar oviposition periods, number of laid eggs and hatched larvae but different body and egg sizes. Overall reproductive success (percentage of egg-laying females and viability of embryos) was similar for both genotypes. The type of crossing led to some differences in reproductive success within female genotypes. The obtained results suggest that processes that led to exclusion of T. macedonicus mtDNA in natural populations may be related to the survival at postembryonic stages of F2 generation or reproductive barriers that emerged in subsequent hybrid generations.
PB  - Basel: MDPI
T2  - Animals
T1  - The reproductive success of Triturus ivanbureschi x T. macedonicus F1 hzbrid females (Amphibia:Salamandridae)
IS  - 4
VL  - 12
DO  - 10.3390/ani12040443
SP  - 443
ER  - 

@article{
author = "Vučić, Tijana and Ivanović, Ana and Ajduković, Maja and Bajler, Nikola and Cvijanović, Milena",
year = "2022",
abstract = "Two large-bodied newt species, Triturus ivanbureschi and T. macedonicus, hybridize in nature across the Balkan Peninsula. Consequences of hybridization upon secondary contact of two species include species displacement and asymmetrical introgression of T. ivanbureschi mtDNA. We set an experimental reciprocal cross of parental species and obtained two genotypes of F1 hybrids (with T. ivanbureschi or T. macedonicus mtDNA). When hybrids attained sexual maturity, they were engaged in mutual crossings and backcrossing with parental species. We followed reproductive traits over two successive years. Our main aim was to explore the reproductive success of F1 females carrying different parental mtDNA. Additionally, we tested for differences in reproductive success within female genotypes depending on the crossing with various male genotypes (hybrids or parental species). Both female genotypes had similar oviposition periods, number of laid eggs and hatched larvae but different body and egg sizes. Overall reproductive success (percentage of egg-laying females and viability of embryos) was similar for both genotypes. The type of crossing led to some differences in reproductive success within female genotypes. The obtained results suggest that processes that led to exclusion of T. macedonicus mtDNA in natural populations may be related to the survival at postembryonic stages of F2 generation or reproductive barriers that emerged in subsequent hybrid generations.",
publisher = "Basel: MDPI",
journal = "Animals",
title = "The reproductive success of Triturus ivanbureschi x T. macedonicus F1 hzbrid females (Amphibia:Salamandridae)",
number = "4",
volume = "12",
doi = "10.3390/ani12040443",
pages = "443"
}

Vučić, T., Ivanović, A., Ajduković, M., Bajler, N.,& Cvijanović, M.. (2022). The reproductive success of Triturus ivanbureschi x T. macedonicus F1 hzbrid females (Amphibia:Salamandridae). in Animals
Basel: MDPI., 12(4), 443.
https://doi.org/10.3390/ani12040443

Vučić T, Ivanović A, Ajduković M, Bajler N, Cvijanović M. The reproductive success of Triturus ivanbureschi x T. macedonicus F1 hzbrid females (Amphibia:Salamandridae). in Animals. 2022;12(4):443.
doi:10.3390/ani12040443 .

Vučić, Tijana, Ivanović, Ana, Ajduković, Maja, Bajler, Nikola, Cvijanović, Milena, "The reproductive success of Triturus ivanbureschi x T. macedonicus F1 hzbrid females (Amphibia:Salamandridae)" in Animals, 12, no. 4 (2022):443,
https://doi.org/10.3390/ani12040443 . .

TY  - JOUR
AU  - Urošević, Aleksandar
AU  - Crnobrnja-Isailović, Jelka
AU  - Ljubisavljević, Katarina
AU  - Vukov, Tanja
AU  - Anđelković, Marko
AU  - Ivanović, Ana
AU  - Golubović, Ana
AU  - Vučić, Tijana
AU  - Tomović, Ljiljana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5549
AB  - In this paper, the updated checklist of Serbian amphibians and reptiles is
presented. The updated checklist of Serbian amphibians and reptiles was compiled
from the literature on distribution, taxonomy and phylogeny. The checklist
contains 48 autochthonous and two introduced species. Five species underwent
taxonomic revisions (Triturus ivanbureschi, T. macedonicus, Pelobates balcanicus,
Bufotes viridis and Mediodactylus kotschyi). Two species were added after recent
taxonomic splits of species’ complexes (Hyla orientalis and Anguis colchica).
Presence of new (Lacerta trilineata) and introduced species (Hemidactylus turcicus)
was confirmed during recent fieldwork. There are at least eight more species
that can potentially be present in Serbia. The national protection legislative should
be updated according to the current checklist.
AB  - У овом раду приказујемо ажурирану листу фауне водоземаца и
гмизаваца у Србији. Листа је састављена на основу литературе о
дистрибуцији, таксономији и филогенији водоземаца и гмизаваца који
припадају нашој фауни. Садржи 48 врста аутохтоних за Републику
Србију као и две интродуковане врсте за које је потврђено да се на
територији Србије размножавају и успостављају популације. Пет
врста на овој листи су недавно прошле кроз таксономску ревизију
(Triturus ivanbureschi, T. macedonicus, Pelobates balcanicus, Bufotes
viridis и Mediodactylus kotschyi), а две врсте су придодате након
скорашњег таксономског раздвајања комплекса врста (Hyla orientalis и
Anguis colchica). Најновија теренска истраживања су потврдила при-
суство једне нове (Lacerta trilineata) и једне интродуковане врсте
(Hemidactylus turcicus). Потенцијално је на територији Репубике Срби-
је присутно још најмање осам врста водоземаца и гмизаваца, пре свега
у пограничним областима. Од 48 врста аутохтоних за Републику
Србију, седам су рањиве/готово угрожене на међународном нивоу,
према критеријумима IUCN, три су у прилозима CITES-а, 39 се налазе
на анексима Директиве о стаништима (Habitat Directive), а све су на
прилозима Бернске конвенције. У току је процена конзервационог
статуса свих врста на националном нивоу, на основу чега ће бити
предложена нова легислатива.
Са 48 врста, Србија се може сматрати за богату биолошком
разноврсношћу водоземаца и гмизаваца па чак и центром диверзитета
појединих таксона – пре свега великих мрмољака и других комплекса
врста (Hyla, Pelophylax, Anguis). Даља истраживања батрахо- и херпе-
тофауне требало би концентрисати на контактне/хибридне зоне
комплекса врста и пограничне области наше земље.
PB  - Belgrade: Natural History Museum
T2  - Bulletin of the Natural History Museum
T1  - An updated checklist of the Serbian batracho- and herpetofauna
T1  - Ажурирана листа батрахо- и херпетофауне Републике Србије
VL  - 15
DO  - 10.5937/bnhmb2215149U
SP  - 149
EP  - 169
ER  - 

@article{
author = "Urošević, Aleksandar and Crnobrnja-Isailović, Jelka and Ljubisavljević, Katarina and Vukov, Tanja and Anđelković, Marko and Ivanović, Ana and Golubović, Ana and Vučić, Tijana and Tomović, Ljiljana",
year = "2022",
abstract = "In this paper, the updated checklist of Serbian amphibians and reptiles is
presented. The updated checklist of Serbian amphibians and reptiles was compiled
from the literature on distribution, taxonomy and phylogeny. The checklist
contains 48 autochthonous and two introduced species. Five species underwent
taxonomic revisions (Triturus ivanbureschi, T. macedonicus, Pelobates balcanicus,
Bufotes viridis and Mediodactylus kotschyi). Two species were added after recent
taxonomic splits of species’ complexes (Hyla orientalis and Anguis colchica).
Presence of new (Lacerta trilineata) and introduced species (Hemidactylus turcicus)
was confirmed during recent fieldwork. There are at least eight more species
that can potentially be present in Serbia. The national protection legislative should
be updated according to the current checklist., У овом раду приказујемо ажурирану листу фауне водоземаца и
гмизаваца у Србији. Листа је састављена на основу литературе о
дистрибуцији, таксономији и филогенији водоземаца и гмизаваца који
припадају нашој фауни. Садржи 48 врста аутохтоних за Републику
Србију као и две интродуковане врсте за које је потврђено да се на
територији Србије размножавају и успостављају популације. Пет
врста на овој листи су недавно прошле кроз таксономску ревизију
(Triturus ivanbureschi, T. macedonicus, Pelobates balcanicus, Bufotes
viridis и Mediodactylus kotschyi), а две врсте су придодате након
скорашњег таксономског раздвајања комплекса врста (Hyla orientalis и
Anguis colchica). Најновија теренска истраживања су потврдила при-
суство једне нове (Lacerta trilineata) и једне интродуковане врсте
(Hemidactylus turcicus). Потенцијално је на територији Репубике Срби-
је присутно још најмање осам врста водоземаца и гмизаваца, пре свега
у пограничним областима. Од 48 врста аутохтоних за Републику
Србију, седам су рањиве/готово угрожене на међународном нивоу,
према критеријумима IUCN, три су у прилозима CITES-а, 39 се налазе
на анексима Директиве о стаништима (Habitat Directive), а све су на
прилозима Бернске конвенције. У току је процена конзервационог
статуса свих врста на националном нивоу, на основу чега ће бити
предложена нова легислатива.
Са 48 врста, Србија се може сматрати за богату биолошком
разноврсношћу водоземаца и гмизаваца па чак и центром диверзитета
појединих таксона – пре свега великих мрмољака и других комплекса
врста (Hyla, Pelophylax, Anguis). Даља истраживања батрахо- и херпе-
тофауне требало би концентрисати на контактне/хибридне зоне
комплекса врста и пограничне области наше земље.",
publisher = "Belgrade: Natural History Museum",
journal = "Bulletin of the Natural History Museum",
title = "An updated checklist of the Serbian batracho- and herpetofauna, Ажурирана листа батрахо- и херпетофауне Републике Србије",
volume = "15",
doi = "10.5937/bnhmb2215149U",
pages = "149-169"
}

Urošević, A., Crnobrnja-Isailović, J., Ljubisavljević, K., Vukov, T., Anđelković, M., Ivanović, A., Golubović, A., Vučić, T.,& Tomović, L.. (2022). An updated checklist of the Serbian batracho- and herpetofauna. in Bulletin of the Natural History Museum
Belgrade: Natural History Museum., 15, 149-169.
https://doi.org/10.5937/bnhmb2215149U

Urošević A, Crnobrnja-Isailović J, Ljubisavljević K, Vukov T, Anđelković M, Ivanović A, Golubović A, Vučić T, Tomović L. An updated checklist of the Serbian batracho- and herpetofauna. in Bulletin of the Natural History Museum. 2022;15:149-169.
doi:10.5937/bnhmb2215149U .

Urošević, Aleksandar, Crnobrnja-Isailović, Jelka, Ljubisavljević, Katarina, Vukov, Tanja, Anđelković, Marko, Ivanović, Ana, Golubović, Ana, Vučić, Tijana, Tomović, Ljiljana, "An updated checklist of the Serbian batracho- and herpetofauna" in Bulletin of the Natural History Museum, 15 (2022):149-169,
https://doi.org/10.5937/bnhmb2215149U . .

TY  - CONF
AU  - Vučić, Tijana
AU  - Ivanović, Ana
AU  - Cvijanović, Milena
AU  - Wielstra, Ben
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5588
AB  - Large-bodied newts (Triturus sp.) represent a good model system for evo-devo studies. Females lay relatively large eggs, which are protected by transparent jelly layer, enabling easily observation of external anatomical features throughout embryonic development – from fertilized egg to fully formed larvae. MicroCT scanning aids another, more in depth insight into the development. Virtual cross sections enable visualization of internal anatomy, while volume renderings and reconstructions of 3D models enable exploration of development of internal organs and external morphology. Throughout Triturus embryonic development, homozygous embryos die due to a balanced lethal system known as chromosome 1 syndrome, which involves two non-recombining types of chromosome 1 (1A and 1B). It is hypothesized that the two potential homozygous genotypes (1A1A and 1B1B) arrest at different embryonic stages and express different phenotypes. Hence, knowledge of the embryo’s genotype is crucial for understanding normal embryonic development of heterozygous embryos and malformations which lead to lethality in homozygous embryos. In a pilot project, we tested and optimized a protocol for Triturus embryo scanning which allowed exploration of external and internal morphology while preserving the DNA. Our protocol provides an opportunity to further explore embryonic development in Triturus in diverse research lines: 1) normal embryonic development as a base line for further studies; 2) arrested development to uncover the basis of lethality; and 3) testing various evo-devo hypotheses.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Insights from the inside: 3D embryonic development of Triturus newts
SP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5588
ER  - 

@conference{
author = "Vučić, Tijana and Ivanović, Ana and Cvijanović, Milena and Wielstra, Ben",
year = "2022",
abstract = "Large-bodied newts (Triturus sp.) represent a good model system for evo-devo studies. Females lay relatively large eggs, which are protected by transparent jelly layer, enabling easily observation of external anatomical features throughout embryonic development – from fertilized egg to fully formed larvae. MicroCT scanning aids another, more in depth insight into the development. Virtual cross sections enable visualization of internal anatomy, while volume renderings and reconstructions of 3D models enable exploration of development of internal organs and external morphology. Throughout Triturus embryonic development, homozygous embryos die due to a balanced lethal system known as chromosome 1 syndrome, which involves two non-recombining types of chromosome 1 (1A and 1B). It is hypothesized that the two potential homozygous genotypes (1A1A and 1B1B) arrest at different embryonic stages and express different phenotypes. Hence, knowledge of the embryo’s genotype is crucial for understanding normal embryonic development of heterozygous embryos and malformations which lead to lethality in homozygous embryos. In a pilot project, we tested and optimized a protocol for Triturus embryo scanning which allowed exploration of external and internal morphology while preserving the DNA. Our protocol provides an opportunity to further explore embryonic development in Triturus in diverse research lines: 1) normal embryonic development as a base line for further studies; 2) arrested development to uncover the basis of lethality; and 3) testing various evo-devo hypotheses.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Insights from the inside: 3D embryonic development of Triturus newts",
pages = "40",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5588"
}

Vučić, T., Ivanović, A., Cvijanović, M.,& Wielstra, B.. (2022). Insights from the inside: 3D embryonic development of Triturus newts. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 40.
https://hdl.handle.net/21.15107/rcub_ibiss_5588

Vučić T, Ivanović A, Cvijanović M, Wielstra B. Insights from the inside: 3D embryonic development of Triturus newts. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;:40.
https://hdl.handle.net/21.15107/rcub_ibiss_5588 .

Vučić, Tijana, Ivanović, Ana, Cvijanović, Milena, Wielstra, Ben, "Insights from the inside: 3D embryonic development of Triturus newts" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia (2022):40,
https://hdl.handle.net/21.15107/rcub_ibiss_5588 .

TY  - CONF
AU  - Drobnjaković, Marija
AU  - Ivanović, Ana
AU  - Bugarčić, Marko
AU  - Cvijanović, Milena
AU  - Ajduković, Maja
AU  - Vučić, Tijana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5230
AB  - Staging tables based on the external morphological characteristics are important 
for the needs of comparative embryological studies as they represent a baseline. Large bodied newts (Triturus spp.) have a transparent mucoid capsule that enables insight 
into the external morphology of the embryo during development. Triturus newts are 
characterized by the presence of chromosome 1 syndrome where about 50% of the 
offspring stops developing and dies during the mid embryonic period on the tail bud 
stage. In this study, we focused on the normal development of Balkan crested newt 
(Triturus ivanbureschi). During the breeding season animals were kept in the yard of 
the institute, in plastic tubs (from 200 to 400 liters), covered with a mosquito net that 
allowed natural day-night regime. Plastic strips were provided as an imitation of 
underwater vegetation, on which the females laid their eggs. Eggs were collected every 
morning and moved to Petri dishes at the controlled experimental conditions. The 
embryos were kept in the laboratory at a temperature of 20°C. Photographs and time lapse recordings of developing embryos were taken every day at the same time. 
Compared to already published staging tables for newts and based on the appearance 
of certain morphological structures, such as gills, extremities, balancers, etc., we
distinguished 37 different stages of normal embryonic development of T. ivanbureshi. 
Still, differences in external morphology due to the balanced lethal chromosome 1 
syndrome need further research
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Developmental stages of Triturus ivanbureschi
VL  - 260
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5230
ER  - 

@conference{
author = "Drobnjaković, Marija and Ivanović, Ana and Bugarčić, Marko and Cvijanović, Milena and Ajduković, Maja and Vučić, Tijana",
year = "2022",
abstract = "Staging tables based on the external morphological characteristics are important 
for the needs of comparative embryological studies as they represent a baseline. Large bodied newts (Triturus spp.) have a transparent mucoid capsule that enables insight 
into the external morphology of the embryo during development. Triturus newts are 
characterized by the presence of chromosome 1 syndrome where about 50% of the 
offspring stops developing and dies during the mid embryonic period on the tail bud 
stage. In this study, we focused on the normal development of Balkan crested newt 
(Triturus ivanbureschi). During the breeding season animals were kept in the yard of 
the institute, in plastic tubs (from 200 to 400 liters), covered with a mosquito net that 
allowed natural day-night regime. Plastic strips were provided as an imitation of 
underwater vegetation, on which the females laid their eggs. Eggs were collected every 
morning and moved to Petri dishes at the controlled experimental conditions. The 
embryos were kept in the laboratory at a temperature of 20°C. Photographs and time lapse recordings of developing embryos were taken every day at the same time. 
Compared to already published staging tables for newts and based on the appearance 
of certain morphological structures, such as gills, extremities, balancers, etc., we
distinguished 37 different stages of normal embryonic development of T. ivanbureshi. 
Still, differences in external morphology due to the balanced lethal chromosome 1 
syndrome need further research",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Developmental stages of Triturus ivanbureschi",
volume = "260",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5230"
}

Drobnjaković, M., Ivanović, A., Bugarčić, M., Cvijanović, M., Ajduković, M.,& Vučić, T.. (2022). Developmental stages of Triturus ivanbureschi. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 260.
https://hdl.handle.net/21.15107/rcub_ibiss_5230

Drobnjaković M, Ivanović A, Bugarčić M, Cvijanović M, Ajduković M, Vučić T. Developmental stages of Triturus ivanbureschi. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;260.
https://hdl.handle.net/21.15107/rcub_ibiss_5230 .

Drobnjaković, Marija, Ivanović, Ana, Bugarčić, Marko, Cvijanović, Milena, Ajduković, Maja, Vučić, Tijana, "Developmental stages of Triturus ivanbureschi" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia, 260 (2022),
https://hdl.handle.net/21.15107/rcub_ibiss_5230 .

TY  - JOUR
AU  - Scholtes, Stefan
AU  - Arntzen, Jan
AU  - Ajduković, Maja
AU  - Ivanović, Ana
PY  - 2021
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4660
AB  - The salamander vertebral column is largely undifferentiated, with a series of more or less uniform rib bearing presacral vertebrae traditionally designated as the trunk region. We explored regionalisation of the salamander trunk in seven species and two subspecies of the salamander genus Lissotriton by the combination of micro computed tomography scanning and geometric morphometrics. The detailed information on trunk vertebral shape was subjected to a multidimensional cluster analysis and a phenotypic trajectory analysis. With these complementary approaches, we observed a clear morphological regionalization. Clustering analysis showed that the anterior trunk vertebrae (T1 and T2) have distinct morphologies that are shared by all taxa, whereas the subsequent, more posterior vertebrae show significant disparity between species. The phenotypic trajectory analysis revealed that all taxa share a common pattern and amount of shape change along the trunk region. Altogether, our results support the hypothesis of a conserved anterior-posterior developmental patterning which can be associated with different functional demands, reflecting (sub)species’ and possibly, regional ecological divergences within species.
PB  - Hoboken: Wiley
T2  - Journal of Anatomy
T1  - Variation in vertebrae shape across small-bodied newts reveals functional and developmental constraints acting upon the trunk region
DO  - 10.1111/joa.13591
ER  - 

@article{
author = "Scholtes, Stefan and Arntzen, Jan and Ajduković, Maja and Ivanović, Ana",
year = "2021",
abstract = "The salamander vertebral column is largely undifferentiated, with a series of more or less uniform rib bearing presacral vertebrae traditionally designated as the trunk region. We explored regionalisation of the salamander trunk in seven species and two subspecies of the salamander genus Lissotriton by the combination of micro computed tomography scanning and geometric morphometrics. The detailed information on trunk vertebral shape was subjected to a multidimensional cluster analysis and a phenotypic trajectory analysis. With these complementary approaches, we observed a clear morphological regionalization. Clustering analysis showed that the anterior trunk vertebrae (T1 and T2) have distinct morphologies that are shared by all taxa, whereas the subsequent, more posterior vertebrae show significant disparity between species. The phenotypic trajectory analysis revealed that all taxa share a common pattern and amount of shape change along the trunk region. Altogether, our results support the hypothesis of a conserved anterior-posterior developmental patterning which can be associated with different functional demands, reflecting (sub)species’ and possibly, regional ecological divergences within species.",
publisher = "Hoboken: Wiley",
journal = "Journal of Anatomy",
title = "Variation in vertebrae shape across small-bodied newts reveals functional and developmental constraints acting upon the trunk region",
doi = "10.1111/joa.13591"
}

Scholtes, S., Arntzen, J., Ajduković, M.,& Ivanović, A.. (2021). Variation in vertebrae shape across small-bodied newts reveals functional and developmental constraints acting upon the trunk region. in Journal of Anatomy
Hoboken: Wiley..
https://doi.org/10.1111/joa.13591

Scholtes S, Arntzen J, Ajduković M, Ivanović A. Variation in vertebrae shape across small-bodied newts reveals functional and developmental constraints acting upon the trunk region. in Journal of Anatomy. 2021;.
doi:10.1111/joa.13591 .

Scholtes, Stefan, Arntzen, Jan, Ajduković, Maja, Ivanović, Ana, "Variation in vertebrae shape across small-bodied newts reveals functional and developmental constraints acting upon the trunk region" in Journal of Anatomy (2021),
https://doi.org/10.1111/joa.13591 . .

TY  - CONF
AU  - Urošević, Aleksandar
AU  - Ajduković, Maja
AU  - Arntzen, Jan W
AU  - Ivanović, Ana
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5528
AB  - Using micro-CT scanning and 3D geometric morphometrics of newt craniums and axial skeletons (firstthree vertebrae) we explored the pattern of morphological integration. We tested if i) directly connected seriallyhomologous structures are more integrated than separated ones and ii) morphological integration coincides withregional differentiation. We applied a multilevel approach by analyzing patterns of integration at static andevolutionary levels, i.e., within and between species respectively. At the static level we choose the genus Triturusas a representative monophyletic group. We analysed between-individual variation in shape to detect functionalmodules and within-individuals the asymmetric component of variation in shape to detect developmental modules.At the evolutionary level, 17 species from five genera were analysed in phylogenetic context and taking effects ofallometry on modularity and integration into account. We found that allometry is an important integrating factorin serially homologous structures. At the static level and after the correction for allometry, functional integrationbetween the cranium and first vertebrae was weak but statistically significant between all elements, anddevelopmental integration was significant between the cranium and the atlas and first and second trunk vertebrae.At the evolutionary level, the cranium, atlas and trunk vertebrae separate as three different modules. Our resultssuggest that, at the evolutionary level, morphological integration coincide with regional and functionaldifferentiation of the axial skeleton. This allows the relatively independent evolution of the cranial skeleton andthe vertebral column, separate of the significant functional and developmental integration at the static level.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade
C3  - XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy
T1  - Мorphological integration of the cranium and axial skeleton in european newts
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5528
ER  - 

@conference{
author = "Urošević, Aleksandar and Ajduković, Maja and Arntzen, Jan W and Ivanović, Ana",
year = "2019",
abstract = "Using micro-CT scanning and 3D geometric morphometrics of newt craniums and axial skeletons (firstthree vertebrae) we explored the pattern of morphological integration. We tested if i) directly connected seriallyhomologous structures are more integrated than separated ones and ii) morphological integration coincides withregional differentiation. We applied a multilevel approach by analyzing patterns of integration at static andevolutionary levels, i.e., within and between species respectively. At the static level we choose the genus Triturusas a representative monophyletic group. We analysed between-individual variation in shape to detect functionalmodules and within-individuals the asymmetric component of variation in shape to detect developmental modules.At the evolutionary level, 17 species from five genera were analysed in phylogenetic context and taking effects ofallometry on modularity and integration into account. We found that allometry is an important integrating factorin serially homologous structures. At the static level and after the correction for allometry, functional integrationbetween the cranium and first vertebrae was weak but statistically significant between all elements, anddevelopmental integration was significant between the cranium and the atlas and first and second trunk vertebrae.At the evolutionary level, the cranium, atlas and trunk vertebrae separate as three different modules. Our resultssuggest that, at the evolutionary level, morphological integration coincide with regional and functionaldifferentiation of the axial skeleton. This allows the relatively independent evolution of the cranial skeleton andthe vertebral column, separate of the significant functional and developmental integration at the static level.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade",
journal = "XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy",
title = "Мorphological integration of the cranium and axial skeleton in european newts",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5528"
}

Urošević, A., Ajduković, M., Arntzen, J. W.,& Ivanović, A.. (2019). Мorphological integration of the cranium and axial skeleton in european newts. in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy
Belgrade: Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_ibiss_5528

Urošević A, Ajduković M, Arntzen JW, Ivanović A. Мorphological integration of the cranium and axial skeleton in european newts. in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy. 2019;.
https://hdl.handle.net/21.15107/rcub_ibiss_5528 .

Urošević, Aleksandar, Ajduković, Maja, Arntzen, Jan W, Ivanović, Ana, "Мorphological integration of the cranium and axial skeleton in european newts" in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy (2019),
https://hdl.handle.net/21.15107/rcub_ibiss_5528 .

TY  - CONF
AU  - Vučić, Tijana
AU  - Cvijanović, Milena
AU  - Ivanović, Ana
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5590
AB  - The natural hybrid zone of Triturus ivanbureschi and T. macedonicus in the central Balkan Peninsula with
a specific species displacement scenario provides an excellent background for evolutionary studies. We set up a
common garden experiment for breeding and reciprocal crossing of these two species from populations out of the
hybrid zone. We collected data on life-history and morphological diversification throughout ontogeny. Our results
showed that there are no pre- or postzygotic reproductive barriers, with proven fecundity of F1 generation in all
crossings. Reproductive characteristics and survival rates were similar for both species and their hybrids.
Hybridization significantly affects morphological variation, with hybrids showing distinct tail and head
morphology compared to parental species. The head shape ontogeny from hatchling to metamorphosed stage was
used to explore postembryonic ontogenetic trajectories and to test whether metamorphosis acts as developmental
constraint. Differences in the developmental rate of the two species were found. Hybrids had intermediate values
relative to parental species. Also, obtained results revealed that metamorphosis cannot be regarded as a
developmental constraint for salamander head shape. Overall, results obtained from the common garden
experiment provided an insight into evolutionary mechanisms that lead to divergence from the common ancestral
developmental program and evolution of ontogenies in the hybrid zone.
PB  - Milan, Italy: University of Milan, the University of Pavia, the Natural History Museum of Milan and the University of Milano-Bicocca
C3  - XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy
T1  - What Triturus newts can tell us about diversification and evolution within hybrid zone?
SP  - 166
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5590
ER  - 

@conference{
author = "Vučić, Tijana and Cvijanović, Milena and Ivanović, Ana",
year = "2019",
abstract = "The natural hybrid zone of Triturus ivanbureschi and T. macedonicus in the central Balkan Peninsula with
a specific species displacement scenario provides an excellent background for evolutionary studies. We set up a
common garden experiment for breeding and reciprocal crossing of these two species from populations out of the
hybrid zone. We collected data on life-history and morphological diversification throughout ontogeny. Our results
showed that there are no pre- or postzygotic reproductive barriers, with proven fecundity of F1 generation in all
crossings. Reproductive characteristics and survival rates were similar for both species and their hybrids.
Hybridization significantly affects morphological variation, with hybrids showing distinct tail and head
morphology compared to parental species. The head shape ontogeny from hatchling to metamorphosed stage was
used to explore postembryonic ontogenetic trajectories and to test whether metamorphosis acts as developmental
constraint. Differences in the developmental rate of the two species were found. Hybrids had intermediate values
relative to parental species. Also, obtained results revealed that metamorphosis cannot be regarded as a
developmental constraint for salamander head shape. Overall, results obtained from the common garden
experiment provided an insight into evolutionary mechanisms that lead to divergence from the common ancestral
developmental program and evolution of ontogenies in the hybrid zone.",
publisher = "Milan, Italy: University of Milan, the University of Pavia, the Natural History Museum of Milan and the University of Milano-Bicocca",
journal = "XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy",
title = "What Triturus newts can tell us about diversification and evolution within hybrid zone?",
pages = "166",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5590"
}

Vučić, T., Cvijanović, M.,& Ivanović, A.. (2019). What Triturus newts can tell us about diversification and evolution within hybrid zone?. in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy
Milan, Italy: University of Milan, the University of Pavia, the Natural History Museum of Milan and the University of Milano-Bicocca., 166.
https://hdl.handle.net/21.15107/rcub_ibiss_5590

Vučić T, Cvijanović M, Ivanović A. What Triturus newts can tell us about diversification and evolution within hybrid zone?. in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy. 2019;:166.
https://hdl.handle.net/21.15107/rcub_ibiss_5590 .

Vučić, Tijana, Cvijanović, Milena, Ivanović, Ana, "What Triturus newts can tell us about diversification and evolution within hybrid zone?" in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy (2019):166,
https://hdl.handle.net/21.15107/rcub_ibiss_5590 .

TY  - CONF
AU  - Urošević, Aleksandar
AU  - Ljubisavljević, Katarina
AU  - Ivanović, Ana
PY  - 2018
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5524
AB  - There is a growing interest for studies of modularity and morphological integration in non-model organisms, and the need for these studies at multiple levels has often been pointed out. Our dataset, consisting of cranium shape data for 14 lizard species from the family Lacertidae, with substantial samples of hatchlings and adults, and their inferred evolutionary relationships, enabled us to perform multi-level assessment of modularity and morphological integration. The skull shape was quantified by landmark based geometric morphometrics, and five alternative modularity hypotheses of lizard cranium were tested using both allometric and non-allometric components of shape variation. At the static level, firm confirmation of cranial modularity was found for hypotheses which separate anterior and posterior functional compartments of the skull. At the ontogenetic and evolutionary level, the hypothesis based on developmental origin of skeletal elements (neurocranial versus dermatocranial) was confirmed. Also, the differences in the pattern of modularity for allometric and non-allometric component of shape variation were found. These results indicate that static modularity could be driven by functional demands and can be regarded as adaptive. The shared pattern of ontogenetic and evolutionary modularity indicates conservativism of modularity patterns driven by developmental constraints. The main implication is that there is a complex interaction of developmental and functional constraints, including allometry, in shaping cranial modularity pattern.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"
C3  - 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel
T1  - Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5524
ER  - 

@conference{
author = "Urošević, Aleksandar and Ljubisavljević, Katarina and Ivanović, Ana",
year = "2018",
abstract = "There is a growing interest for studies of modularity and morphological integration in non-model organisms, and the need for these studies at multiple levels has often been pointed out. Our dataset, consisting of cranium shape data for 14 lizard species from the family Lacertidae, with substantial samples of hatchlings and adults, and their inferred evolutionary relationships, enabled us to perform multi-level assessment of modularity and morphological integration. The skull shape was quantified by landmark based geometric morphometrics, and five alternative modularity hypotheses of lizard cranium were tested using both allometric and non-allometric components of shape variation. At the static level, firm confirmation of cranial modularity was found for hypotheses which separate anterior and posterior functional compartments of the skull. At the ontogenetic and evolutionary level, the hypothesis based on developmental origin of skeletal elements (neurocranial versus dermatocranial) was confirmed. Also, the differences in the pattern of modularity for allometric and non-allometric component of shape variation were found. These results indicate that static modularity could be driven by functional demands and can be regarded as adaptive. The shared pattern of ontogenetic and evolutionary modularity indicates conservativism of modularity patterns driven by developmental constraints. The main implication is that there is a complex interaction of developmental and functional constraints, including allometry, in shaping cranial modularity pattern.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"",
journal = "10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel",
title = "Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5524"
}

Urošević, A., Ljubisavljević, K.,& Ivanović, A.. (2018). Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards. in 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel
Belgrade: Institute for Biological Research "Siniša Stanković"..
https://hdl.handle.net/21.15107/rcub_ibiss_5524

Urošević A, Ljubisavljević K, Ivanović A. Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards. in 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel. 2018;.
https://hdl.handle.net/21.15107/rcub_ibiss_5524 .

Urošević, Aleksandar, Ljubisavljević, Katarina, Ivanović, Ana, "Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards" in 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel (2018),
https://hdl.handle.net/21.15107/rcub_ibiss_5524 .

TY  - CONF
AU  - Urošević, Aleksandar
AU  - Ljubisavljević, Katarina
AU  - Ivanović, Ana
PY  - 2018
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5523
AB  - There is a growing interest for studies of modularity and morphological integration in non-model organisms, and the need for these studies at multiple levels has often been pointed out. Our dataset, consisting of cranium shape data for 14 lizard species from the family Lacertidae, with substantial samples of hatchlings and adults, and their inferred evolutionary relationships, enabled us to perform multi-level assessment of modularity and morphological integration. The skull shape was quantified by landmark based geometric morphometrics, and five alternative modularity hypotheses of lizard cranium were tested using both allometric and non-allometric components of shape variation. At the static level, firm confirmation of cranial modularity was found for hypotheses which separate anterior and posterior functional compartments of the skull. At the ontogenetic and evolutionary level, the hypothesis based on developmental origin of skeletal elements (neurocranial versus dermatocranial) was confirmed. Also, the differences in the pattern of modularity for allometric and non-allometric component of shape variation were found. These results indicate that static modularity could be driven by functional demands and can be regarded as adaptive. The shared pattern of ontogenetic and evolutionary modularity indicates conservativism of modularity patterns driven by developmental constraints. The main implication is that there is a complex interaction of developmental and functional constraints, including allometry, in shaping cranial modularity pattern.
PB  - Tel Aviv: The Zoological Society of Israel
C3  - Book of ABstracts: 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel
T1  - Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards
SP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5523
ER  - 

@conference{
author = "Urošević, Aleksandar and Ljubisavljević, Katarina and Ivanović, Ana",
year = "2018",
abstract = "There is a growing interest for studies of modularity and morphological integration in non-model organisms, and the need for these studies at multiple levels has often been pointed out. Our dataset, consisting of cranium shape data for 14 lizard species from the family Lacertidae, with substantial samples of hatchlings and adults, and their inferred evolutionary relationships, enabled us to perform multi-level assessment of modularity and morphological integration. The skull shape was quantified by landmark based geometric morphometrics, and five alternative modularity hypotheses of lizard cranium were tested using both allometric and non-allometric components of shape variation. At the static level, firm confirmation of cranial modularity was found for hypotheses which separate anterior and posterior functional compartments of the skull. At the ontogenetic and evolutionary level, the hypothesis based on developmental origin of skeletal elements (neurocranial versus dermatocranial) was confirmed. Also, the differences in the pattern of modularity for allometric and non-allometric component of shape variation were found. These results indicate that static modularity could be driven by functional demands and can be regarded as adaptive. The shared pattern of ontogenetic and evolutionary modularity indicates conservativism of modularity patterns driven by developmental constraints. The main implication is that there is a complex interaction of developmental and functional constraints, including allometry, in shaping cranial modularity pattern.",
publisher = "Tel Aviv: The Zoological Society of Israel",
journal = "Book of ABstracts: 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel",
title = "Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards",
pages = "29",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5523"
}

Urošević, A., Ljubisavljević, K.,& Ivanović, A.. (2018). Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards. in Book of ABstracts: 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel
Tel Aviv: The Zoological Society of Israel., 29.
https://hdl.handle.net/21.15107/rcub_ibiss_5523

Urošević A, Ljubisavljević K, Ivanović A. Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards. in Book of ABstracts: 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel. 2018;:29.
https://hdl.handle.net/21.15107/rcub_ibiss_5523 .

Urošević, Aleksandar, Ljubisavljević, Katarina, Ivanović, Ana, "Static, ontogenetic and evolutionary modularity of cranial skeleton in Lacertid lizards" in Book of ABstracts: 10th International Symposium on the Lacertids of the Mediterranean Basin and 2nd Symposium on lizards of the Mediterranean Basin; 2018 Jun 18-21; Tel Aviv, Israel (2018):29,
https://hdl.handle.net/21.15107/rcub_ibiss_5523 .

TY  - JOUR
AU  - Urošević, Aleksandar
AU  - Ljubisavljević, Katarina
AU  - Ivanović, Ana T
PY  - 2013
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1044
AB  - We explored the ontogenetic dynamics of the morphological and allometric disparity in the cranium shapes of twelve lacertid lizard species. The analysed species (Darevskia praticola, Dinarolacerta mosorensis, Iberolacerta horvathi, Lacerta agilis, L. trilineata, L. viridis, Podarcis erhardii, P. melisellensis, P. muralis, P. sicula, P. taurica and Zootoca vivipara) can be classified into different ecomorphs: terrestrial lizards that inhabit vegetated habitats (habitats with lush or sparse vegetation), saxicolous and shrub-climbing lizards. We observed that there was an overall increase in the morphological disparity (MD) during the ontogeny of the lacertid lizards. The ventral cranium, which is involved in the mechanics of jaw movement and feeding, showed higher levels of MD, an ontogenetic shift in the morphospace planes and more variable allometric patterns than more conserved dorsal crania. With respect to ecology, the allometric trajectories of the shrub-climbing species tended to cluster together, whereas the allometric trajectories of the saxicolous species were highly dispersed. Our results indicate that the ontogenetic patterns of morphological and allometric disparity in the lacertid lizards are modified by ecology and functional constraints and that the identical mechanisms that lead to intraspecific morphological variation also produce morphological divergence at higher taxonomic levels.
T2  - Journal of Evolutionary Biology
T1  - Patterns of cranial ontogeny in lacertid lizards: morphological and allometric disparity
IS  - 2
VL  - 26
SP  - 195
EP  - 415
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1044
ER  - 

@article{
author = "Urošević, Aleksandar and Ljubisavljević, Katarina and Ivanović, Ana T",
year = "2013",
abstract = "We explored the ontogenetic dynamics of the morphological and allometric disparity in the cranium shapes of twelve lacertid lizard species. The analysed species (Darevskia praticola, Dinarolacerta mosorensis, Iberolacerta horvathi, Lacerta agilis, L. trilineata, L. viridis, Podarcis erhardii, P. melisellensis, P. muralis, P. sicula, P. taurica and Zootoca vivipara) can be classified into different ecomorphs: terrestrial lizards that inhabit vegetated habitats (habitats with lush or sparse vegetation), saxicolous and shrub-climbing lizards. We observed that there was an overall increase in the morphological disparity (MD) during the ontogeny of the lacertid lizards. The ventral cranium, which is involved in the mechanics of jaw movement and feeding, showed higher levels of MD, an ontogenetic shift in the morphospace planes and more variable allometric patterns than more conserved dorsal crania. With respect to ecology, the allometric trajectories of the shrub-climbing species tended to cluster together, whereas the allometric trajectories of the saxicolous species were highly dispersed. Our results indicate that the ontogenetic patterns of morphological and allometric disparity in the lacertid lizards are modified by ecology and functional constraints and that the identical mechanisms that lead to intraspecific morphological variation also produce morphological divergence at higher taxonomic levels.",
journal = "Journal of Evolutionary Biology",
title = "Patterns of cranial ontogeny in lacertid lizards: morphological and allometric disparity",
number = "2",
volume = "26",
pages = "195-415",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1044"
}

Urošević, A., Ljubisavljević, K.,& Ivanović, A. T.. (2013). Patterns of cranial ontogeny in lacertid lizards: morphological and allometric disparity. in Journal of Evolutionary Biology, 26(2), 195-415.
https://hdl.handle.net/21.15107/rcub_ibiss_1044

Urošević A, Ljubisavljević K, Ivanović AT. Patterns of cranial ontogeny in lacertid lizards: morphological and allometric disparity. in Journal of Evolutionary Biology. 2013;26(2):195-415.
https://hdl.handle.net/21.15107/rcub_ibiss_1044 .

Urošević, Aleksandar, Ljubisavljević, Katarina, Ivanović, Ana T, "Patterns of cranial ontogeny in lacertid lizards: morphological and allometric disparity" in Journal of Evolutionary Biology, 26, no. 2 (2013):195-415,
https://hdl.handle.net/21.15107/rcub_ibiss_1044 .

TY  - JOUR
AU  - Urošević, Aleksandar
AU  - Ljubisavljević, Katarina
AU  - Jelić, Dusan
AU  - Ivanović, Ana T
PY  - 2012
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1151
AB  - We used geometric morphometrics to explore the influence of phylogenetic and allometric constraints as well as ecology on variation in cranium shape in five species of monophyletic, morphologically similar Podarcis lizards (Podarcis erhardii, Podarcis melisellensis, Podarcis muralis, Podarcis sicula and Podarcis taurica). These species belong to different clades, they differ in their habitat preferences and can be classified into two distinct morphotypes: saxicolous and terrestrial. We found (i) no phylogenetic signal in cranium shape, (ii) diverging allometric slopes among species, and (iii) a significant effect of habitat on cranium shape. The saxicolous species (P. erhardii and P. muralis) had crania with elongated parietals, elongated cranium bases, shortened anterior parts of the dorsal cranium, reduced chambers of the jaw adductor muscles and larger subocular foramina. These cranial features are adaptations that compensate for a flattened cranium, dwelling on vertical surfaces and seeking refuge in crevices. The crania of the terrestrial species (P. melisellensis, P. sicula and P. taurica) tended to be more elongate and robust, with enlarged chambers of the jaw adductor muscle, reduced skull bases and shortened parietals. Terrestrial species exhibited more variation in cranium shape than saxicolous species. Our study suggests that shape variation in Podarcis sp. lizards is largely influenced by ecology, which likely affects species-specific patterns of static allometry. (c) 2012 Elsevier GmbH. All rights reserved.
T2  - Zoology
T1  - Variation in the cranium shape of wall lizards (Podarcis spp.): effects of phylogenetic constraints, allometric constraints and ecology
IS  - 4
VL  - 115
SP  - 1149
EP  - 216
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1151
ER  - 

@article{
author = "Urošević, Aleksandar and Ljubisavljević, Katarina and Jelić, Dusan and Ivanović, Ana T",
year = "2012",
abstract = "We used geometric morphometrics to explore the influence of phylogenetic and allometric constraints as well as ecology on variation in cranium shape in five species of monophyletic, morphologically similar Podarcis lizards (Podarcis erhardii, Podarcis melisellensis, Podarcis muralis, Podarcis sicula and Podarcis taurica). These species belong to different clades, they differ in their habitat preferences and can be classified into two distinct morphotypes: saxicolous and terrestrial. We found (i) no phylogenetic signal in cranium shape, (ii) diverging allometric slopes among species, and (iii) a significant effect of habitat on cranium shape. The saxicolous species (P. erhardii and P. muralis) had crania with elongated parietals, elongated cranium bases, shortened anterior parts of the dorsal cranium, reduced chambers of the jaw adductor muscles and larger subocular foramina. These cranial features are adaptations that compensate for a flattened cranium, dwelling on vertical surfaces and seeking refuge in crevices. The crania of the terrestrial species (P. melisellensis, P. sicula and P. taurica) tended to be more elongate and robust, with enlarged chambers of the jaw adductor muscle, reduced skull bases and shortened parietals. Terrestrial species exhibited more variation in cranium shape than saxicolous species. Our study suggests that shape variation in Podarcis sp. lizards is largely influenced by ecology, which likely affects species-specific patterns of static allometry. (c) 2012 Elsevier GmbH. All rights reserved.",
journal = "Zoology",
title = "Variation in the cranium shape of wall lizards (Podarcis spp.): effects of phylogenetic constraints, allometric constraints and ecology",
number = "4",
volume = "115",
pages = "1149-216",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1151"
}

Urošević, A., Ljubisavljević, K., Jelić, D.,& Ivanović, A. T.. (2012). Variation in the cranium shape of wall lizards (Podarcis spp.): effects of phylogenetic constraints, allometric constraints and ecology. in Zoology, 115(4), 1149-216.
https://hdl.handle.net/21.15107/rcub_ibiss_1151

Urošević A, Ljubisavljević K, Jelić D, Ivanović AT. Variation in the cranium shape of wall lizards (Podarcis spp.): effects of phylogenetic constraints, allometric constraints and ecology. in Zoology. 2012;115(4):1149-216.
https://hdl.handle.net/21.15107/rcub_ibiss_1151 .

Urošević, Aleksandar, Ljubisavljević, Katarina, Jelić, Dusan, Ivanović, Ana T, "Variation in the cranium shape of wall lizards (Podarcis spp.): effects of phylogenetic constraints, allometric constraints and ecology" in Zoology, 115, no. 4 (2012):1149-216,
https://hdl.handle.net/21.15107/rcub_ibiss_1151 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Kalezić, Miloš L.
PY  - 2012
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1208
AB  - In this study, we applied geometric morphometrics to explore variations in the level and pattern of sexual size dimorphism (SSD) and sexual shape dimorphism (SShD) of the ventral cranium in three different Modern Eurasian newt taxa (Ichthyosaura alpestris, Triturus species group and Lissotriton vulgaris). The ventral cranium is the part of the skull that is more directly related to foraging and feeding. Our results indicate that the level and pattern of sexual dimorphism in the ventral cranium differ among Modern Eurasian newt taxa. Regarding sexual dimorphism in skull size, Ichthyosaura alpestris and Triturus species show female-biased patterns (females are larger than males), whereas Lissotriton vulgaris appears to be non-dimorphic in skull size. In I. alpestris and Triturus species, SShD is mostly absent, whereas in L. vulgaris, SShD is more pronounced. A high level of variation between populations in both SSD and SShD indicates that local conditions may have a profound effect on the magnitude and direction of sexual dimorphism. The significant sexual differences in ventral cranium size and shape indicate possible subtle intersexual differences in ecological demands due to diet specialisation, in spite of similar general ecological settings.
T2  - Zoomorphology
T1  - Sexual dimorphism in the skull geometry of newt species of Ichthyosaura, Triturus and Lissotriton (Salamandridae, Caudata, Amphibia)
IS  - 1
VL  - 131
EP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1208
ER  - 

@article{
author = "Ivanović, Ana T and Kalezić, Miloš L.",
year = "2012",
abstract = "In this study, we applied geometric morphometrics to explore variations in the level and pattern of sexual size dimorphism (SSD) and sexual shape dimorphism (SShD) of the ventral cranium in three different Modern Eurasian newt taxa (Ichthyosaura alpestris, Triturus species group and Lissotriton vulgaris). The ventral cranium is the part of the skull that is more directly related to foraging and feeding. Our results indicate that the level and pattern of sexual dimorphism in the ventral cranium differ among Modern Eurasian newt taxa. Regarding sexual dimorphism in skull size, Ichthyosaura alpestris and Triturus species show female-biased patterns (females are larger than males), whereas Lissotriton vulgaris appears to be non-dimorphic in skull size. In I. alpestris and Triturus species, SShD is mostly absent, whereas in L. vulgaris, SShD is more pronounced. A high level of variation between populations in both SSD and SShD indicates that local conditions may have a profound effect on the magnitude and direction of sexual dimorphism. The significant sexual differences in ventral cranium size and shape indicate possible subtle intersexual differences in ecological demands due to diet specialisation, in spite of similar general ecological settings.",
journal = "Zoomorphology",
title = "Sexual dimorphism in the skull geometry of newt species of Ichthyosaura, Triturus and Lissotriton (Salamandridae, Caudata, Amphibia)",
number = "1",
volume = "131",
pages = "78",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1208"
}

Ivanović, A. T.,& Kalezić, M. L.. (2012). Sexual dimorphism in the skull geometry of newt species of Ichthyosaura, Triturus and Lissotriton (Salamandridae, Caudata, Amphibia). in Zoomorphology, 131(1).
https://hdl.handle.net/21.15107/rcub_ibiss_1208

Ivanović AT, Kalezić ML. Sexual dimorphism in the skull geometry of newt species of Ichthyosaura, Triturus and Lissotriton (Salamandridae, Caudata, Amphibia). in Zoomorphology. 2012;131(1):null-78.
https://hdl.handle.net/21.15107/rcub_ibiss_1208 .

Ivanović, Ana T, Kalezić, Miloš L., "Sexual dimorphism in the skull geometry of newt species of Ichthyosaura, Triturus and Lissotriton (Salamandridae, Caudata, Amphibia)" in Zoomorphology, 131, no. 1 (2012),
https://hdl.handle.net/21.15107/rcub_ibiss_1208 .

TY  - JOUR
AU  - Ljubisavljević, Katarina
AU  - Polović, Lidija
AU  - Urošević, Aleksandar
AU  - Ivanović, Ana T
PY  - 2011
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1315
AB  - We applied a geometric morphometrics approach to examine sexual size and shape dimorphisms (SSD and SShD) in dorsal and ventral skull portions and cephalic scales (pileus) in the lacertid lizard Algyroides nigropunctatus. We found significant sexual dimorphism in all three structures that are mostly attributable to allometry. Males and females share allometric trajectories for the pileus and dorsal portion of the skull, i.e. the significant differences in shape between sexes are due to differences in size. Regardless of sex, allometric shape differences between small and large individuals show negative allometry in the anterior parts and more pronounced positive allometry of the parietal region in the dorsal skull and pileus. We observed a marginally significant divergence in sex-specific allometric trajectories of the ventral skull. The similar patterns of covariation between the ventral skull and the dorsal skull portion and pileus indicate close relationships between the skull bones and cephalic scales. The stronger covariation between the ventral and dorsal skull portion in males compared to females raises the question whether sexual dimorphism in the structure of morphological variation of the lizard skull exists.
T2  - Herpetological Journal
T1  - Patterns of morphological variation in the skull and cephalic scales of the lacertid lizard Algyroides nigropunctatus
IS  - 1
VL  - 21
EP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1315
ER  - 

@article{
author = "Ljubisavljević, Katarina and Polović, Lidija and Urošević, Aleksandar and Ivanović, Ana T",
year = "2011",
abstract = "We applied a geometric morphometrics approach to examine sexual size and shape dimorphisms (SSD and SShD) in dorsal and ventral skull portions and cephalic scales (pileus) in the lacertid lizard Algyroides nigropunctatus. We found significant sexual dimorphism in all three structures that are mostly attributable to allometry. Males and females share allometric trajectories for the pileus and dorsal portion of the skull, i.e. the significant differences in shape between sexes are due to differences in size. Regardless of sex, allometric shape differences between small and large individuals show negative allometry in the anterior parts and more pronounced positive allometry of the parietal region in the dorsal skull and pileus. We observed a marginally significant divergence in sex-specific allometric trajectories of the ventral skull. The similar patterns of covariation between the ventral skull and the dorsal skull portion and pileus indicate close relationships between the skull bones and cephalic scales. The stronger covariation between the ventral and dorsal skull portion in males compared to females raises the question whether sexual dimorphism in the structure of morphological variation of the lizard skull exists.",
journal = "Herpetological Journal",
title = "Patterns of morphological variation in the skull and cephalic scales of the lacertid lizard Algyroides nigropunctatus",
number = "1",
volume = "21",
pages = "72",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1315"
}

Ljubisavljević, K., Polović, L., Urošević, A.,& Ivanović, A. T.. (2011). Patterns of morphological variation in the skull and cephalic scales of the lacertid lizard Algyroides nigropunctatus. in Herpetological Journal, 21(1).
https://hdl.handle.net/21.15107/rcub_ibiss_1315

Ljubisavljević K, Polović L, Urošević A, Ivanović AT. Patterns of morphological variation in the skull and cephalic scales of the lacertid lizard Algyroides nigropunctatus. in Herpetological Journal. 2011;21(1):null-72.
https://hdl.handle.net/21.15107/rcub_ibiss_1315 .

Ljubisavljević, Katarina, Polović, Lidija, Urošević, Aleksandar, Ivanović, Ana T, "Patterns of morphological variation in the skull and cephalic scales of the lacertid lizard Algyroides nigropunctatus" in Herpetological Journal, 21, no. 1 (2011),
https://hdl.handle.net/21.15107/rcub_ibiss_1315 .

TY  - JOUR
AU  - Tomašević Kolarov, Nataša
AU  - Ivanović, Ana T
AU  - Kalezić, Miloš L.
PY  - 2011
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1284
AB  - This study deals with the ontogenetic and evolutionary aspects of integration patterns in the limbs of crested newt species, which, like most amphibians, have a biphasic life history with two morphologically distinct stages (larval vs. juvenile and adult) that occupy different environments (aquatic vs. terrestrial). We analyzed the structure and pattern of correlation between limb skeletal elements at three ontogenetic stages (larval, juvenile, and adult) of four closely related species that differ in their preferences of aquatic habitats (more terrestrial and more aquatic). We found dynamic changes in the pattern of morphological integration between successive ontogenetic stages, as well as changes over the course of crested newt phylogeny. Generally, equivalent ontogenetic stages of different species of crested newts show higher concordance in the correlation pattern than successive ontogenetic stages within species. Among species, two opposing correlation patterns were observed: in more terrestrial species, homologous limb elements are less correlated and within-limb elements are more correlated; in aquatic species, the reverse pattern occurs. These results indicate that the function seems to be the covariance-generating factor, which has shaped the patterns of morphological integration of crested newt limbs. J. Exp. Zool. (Mol. Dev. Evol.) 316:296-305, 2011. (C) 2011 Wiley-Liss, Inc.
T2  - Journal of Experimental Zoology Part B-Molecular and Developmental Evolution
T1  - Morphological Integration and Ontogenetic Niche Shift: A Study of Crested Newt Limbs
IS  - 4
VL  - null
EP  - 305
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1284
ER  - 

@article{
author = "Tomašević Kolarov, Nataša and Ivanović, Ana T and Kalezić, Miloš L.",
year = "2011",
abstract = "This study deals with the ontogenetic and evolutionary aspects of integration patterns in the limbs of crested newt species, which, like most amphibians, have a biphasic life history with two morphologically distinct stages (larval vs. juvenile and adult) that occupy different environments (aquatic vs. terrestrial). We analyzed the structure and pattern of correlation between limb skeletal elements at three ontogenetic stages (larval, juvenile, and adult) of four closely related species that differ in their preferences of aquatic habitats (more terrestrial and more aquatic). We found dynamic changes in the pattern of morphological integration between successive ontogenetic stages, as well as changes over the course of crested newt phylogeny. Generally, equivalent ontogenetic stages of different species of crested newts show higher concordance in the correlation pattern than successive ontogenetic stages within species. Among species, two opposing correlation patterns were observed: in more terrestrial species, homologous limb elements are less correlated and within-limb elements are more correlated; in aquatic species, the reverse pattern occurs. These results indicate that the function seems to be the covariance-generating factor, which has shaped the patterns of morphological integration of crested newt limbs. J. Exp. Zool. (Mol. Dev. Evol.) 316:296-305, 2011. (C) 2011 Wiley-Liss, Inc.",
journal = "Journal of Experimental Zoology Part B-Molecular and Developmental Evolution",
title = "Morphological Integration and Ontogenetic Niche Shift: A Study of Crested Newt Limbs",
number = "4",
volume = "null",
pages = "305",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1284"
}

Tomašević Kolarov, N., Ivanović, A. T.,& Kalezić, M. L.. (2011). Morphological Integration and Ontogenetic Niche Shift: A Study of Crested Newt Limbs. in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution, null(4).
https://hdl.handle.net/21.15107/rcub_ibiss_1284

Tomašević Kolarov N, Ivanović AT, Kalezić ML. Morphological Integration and Ontogenetic Niche Shift: A Study of Crested Newt Limbs. in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution. 2011;null(4):null-305.
https://hdl.handle.net/21.15107/rcub_ibiss_1284 .

Tomašević Kolarov, Nataša, Ivanović, Ana T, Kalezić, Miloš L., "Morphological Integration and Ontogenetic Niche Shift: A Study of Crested Newt Limbs" in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution, null, no. 4 (2011),
https://hdl.handle.net/21.15107/rcub_ibiss_1284 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Cvijanović, Milena
AU  - Kalezić, Miloš L.
PY  - 2011
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1304
AB  - Exploring the pattern of size and shape changes during the ontogeny of closely related species is of fundamental importance because it provides an insight into the processes that lead to the evolutionary diversification of body forms and into understanding the adaptations and constraints during growth and development. In this study, we explored the interspecific variation of body size and shape changes during postembryonic development (from the mid-larval period up to the end of metamorphosis) of four crested newt species. We analysed ontogenetic changes in the body size and shape, growth rate and the dynamics of shape variance patterns. We found a consistent pattern of changes in variance across the species studied, with the mid-larval and juvenile stages being highly constrained and canalized and the period of metamorphosis as the most variable stage. The ontogenetic trajectories of larval shape diverge in both the direction and the rate of shape changes along species-specific trajectories. These divergences are concordant with interspecific differences in adult body form and species-specific ecological preferences. However, crested newt species reach the juvenile stage at similar size and shape, indicating that metamorphosis, which is a key point between aquatic and terrestrial morphs, 'resets' the ontogenetic trajectories of larvae. Thus, metamorphosis interrupts the pattern of interspecific divergence, causing species to converge in body form. We speculate that such a pattern of developmental regulation could play crucial roles in the evolution of the body form in amphibians with a biphasic life cycle.
T2  - Journal of Zoology
T1  - Ontogeny of body form and metamorphosis: insights from the crested newts
IS  - 3
VL  - 283
EP  - 161
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1304
ER  - 

@article{
author = "Ivanović, Ana T and Cvijanović, Milena and Kalezić, Miloš L.",
year = "2011",
abstract = "Exploring the pattern of size and shape changes during the ontogeny of closely related species is of fundamental importance because it provides an insight into the processes that lead to the evolutionary diversification of body forms and into understanding the adaptations and constraints during growth and development. In this study, we explored the interspecific variation of body size and shape changes during postembryonic development (from the mid-larval period up to the end of metamorphosis) of four crested newt species. We analysed ontogenetic changes in the body size and shape, growth rate and the dynamics of shape variance patterns. We found a consistent pattern of changes in variance across the species studied, with the mid-larval and juvenile stages being highly constrained and canalized and the period of metamorphosis as the most variable stage. The ontogenetic trajectories of larval shape diverge in both the direction and the rate of shape changes along species-specific trajectories. These divergences are concordant with interspecific differences in adult body form and species-specific ecological preferences. However, crested newt species reach the juvenile stage at similar size and shape, indicating that metamorphosis, which is a key point between aquatic and terrestrial morphs, 'resets' the ontogenetic trajectories of larvae. Thus, metamorphosis interrupts the pattern of interspecific divergence, causing species to converge in body form. We speculate that such a pattern of developmental regulation could play crucial roles in the evolution of the body form in amphibians with a biphasic life cycle.",
journal = "Journal of Zoology",
title = "Ontogeny of body form and metamorphosis: insights from the crested newts",
number = "3",
volume = "283",
pages = "161",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1304"
}

Ivanović, A. T., Cvijanović, M.,& Kalezić, M. L.. (2011). Ontogeny of body form and metamorphosis: insights from the crested newts. in Journal of Zoology, 283(3).
https://hdl.handle.net/21.15107/rcub_ibiss_1304

Ivanović AT, Cvijanović M, Kalezić ML. Ontogeny of body form and metamorphosis: insights from the crested newts. in Journal of Zoology. 2011;283(3):null-161.
https://hdl.handle.net/21.15107/rcub_ibiss_1304 .

Ivanović, Ana T, Cvijanović, Milena, Kalezić, Miloš L., "Ontogeny of body form and metamorphosis: insights from the crested newts" in Journal of Zoology, 283, no. 3 (2011),
https://hdl.handle.net/21.15107/rcub_ibiss_1304 .

TY  - JOUR
AU  - Ljubisavljević, Katarina
AU  - Urošević, Aleksandar
AU  - Aleksić, Ivan D.
AU  - Ivanović, Ana T
PY  - 2010
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1384
AB  - Geometric morphometric techniques were used to examine allometric and non-allometric influences on sexual shape dimorphism (SShD) in the ventral cranium (skull base, palate and upper jaw) of four species of lacertid lizards (Podarcis muralis, Podarcis melisellensis, Dalmatolacerta oxycephala, Dinarolacerta mosorensis). These species differ in body shape, ecology and degree of phylogenetic relatedness. The structures of the ventral cranium that were studied are directly involved in the mechanics of feeding and are connected to the jaw musculature; these structures are potentially subject to both sexual and natural selection. Allometry accounted for a considerable degree of cranial shape variation between the sexes. Allometric shape changes between individuals with smaller cranium size and individuals with larger cranium size are mostly related to changes in the skull base showing pronounced negative allometry. The rostral part, however, either scaled isometrically or showed less pronounced negative allometry than the skull base. Non-allometric intersexual shape variation predominantly involved changes related to the jaw adductor muscle chamber, i.e., changes that are associated with biomechanically relevant traits of the jaw system in females and males. Both allometric and non-allometric shape changes appeared to be species-specific. Our results indicate that natural and sexual selection may be involved in the evolution of SShD. (C) 2010 Elsevier GmbH. All rights reserved.
T2  - Zoology
T1  - Sexual dimorphism of skull shape in a lacertid lizard species (Podarcis spp., Dalmatolacerta sp., Dinarolacerta sp.) revealed by geometric morphometrics
IS  - 3
VL  - 113
EP  - 174
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1384
ER  - 

@article{
author = "Ljubisavljević, Katarina and Urošević, Aleksandar and Aleksić, Ivan D. and Ivanović, Ana T",
year = "2010",
abstract = "Geometric morphometric techniques were used to examine allometric and non-allometric influences on sexual shape dimorphism (SShD) in the ventral cranium (skull base, palate and upper jaw) of four species of lacertid lizards (Podarcis muralis, Podarcis melisellensis, Dalmatolacerta oxycephala, Dinarolacerta mosorensis). These species differ in body shape, ecology and degree of phylogenetic relatedness. The structures of the ventral cranium that were studied are directly involved in the mechanics of feeding and are connected to the jaw musculature; these structures are potentially subject to both sexual and natural selection. Allometry accounted for a considerable degree of cranial shape variation between the sexes. Allometric shape changes between individuals with smaller cranium size and individuals with larger cranium size are mostly related to changes in the skull base showing pronounced negative allometry. The rostral part, however, either scaled isometrically or showed less pronounced negative allometry than the skull base. Non-allometric intersexual shape variation predominantly involved changes related to the jaw adductor muscle chamber, i.e., changes that are associated with biomechanically relevant traits of the jaw system in females and males. Both allometric and non-allometric shape changes appeared to be species-specific. Our results indicate that natural and sexual selection may be involved in the evolution of SShD. (C) 2010 Elsevier GmbH. All rights reserved.",
journal = "Zoology",
title = "Sexual dimorphism of skull shape in a lacertid lizard species (Podarcis spp., Dalmatolacerta sp., Dinarolacerta sp.) revealed by geometric morphometrics",
number = "3",
volume = "113",
pages = "174",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1384"
}

Ljubisavljević, K., Urošević, A., Aleksić, I. D.,& Ivanović, A. T.. (2010). Sexual dimorphism of skull shape in a lacertid lizard species (Podarcis spp., Dalmatolacerta sp., Dinarolacerta sp.) revealed by geometric morphometrics. in Zoology, 113(3).
https://hdl.handle.net/21.15107/rcub_ibiss_1384

Ljubisavljević K, Urošević A, Aleksić ID, Ivanović AT. Sexual dimorphism of skull shape in a lacertid lizard species (Podarcis spp., Dalmatolacerta sp., Dinarolacerta sp.) revealed by geometric morphometrics. in Zoology. 2010;113(3):null-174.
https://hdl.handle.net/21.15107/rcub_ibiss_1384 .

Ljubisavljević, Katarina, Urošević, Aleksandar, Aleksić, Ivan D., Ivanović, Ana T, "Sexual dimorphism of skull shape in a lacertid lizard species (Podarcis spp., Dalmatolacerta sp., Dinarolacerta sp.) revealed by geometric morphometrics" in Zoology, 113, no. 3 (2010),
https://hdl.handle.net/21.15107/rcub_ibiss_1384 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Kalezić, Miloš L.
PY  - 2010
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1334
AB  - In this article, we explore the possible influences of the developmental and functional relationships between skeletal elements on the pattern of morphological integration in the adult skull of the alpine newt. Like many tailed amphibians, the alpine newt has a biphasic life cycle, which implies the possibility that two distinct sets of constraints on development and function of the cranial skeleton may act at different times. We study how trait covariation, resulting from processes early in development, affects patterns of covariation at the adult stage. We test whether the observed patterns of integration are consistent with those predicted from three a priori hypothesized sources of integration: developmental timing, hormonally mediated growth/remodeling during metamorphosis, and developmental and functional relationships. The analyses of the covariation among the landmarks in the dorsal and ventral alpine newt craniums yield somewhat contrasting results. Our results do not indicate a clear correspondence between the observed variations in the skull shape and any of the three proposed hypotheses. No traceable reflection of hypothesized developmental relationships in the pattern of morphological integration/modularity in the adult skull indicate that covariation structure is continually restructured by overlaying variation introduced through developmental and environmental factors at different stages of development. This finding supports the recently elaborated palimpsest view of morphological integration. Also, our results indicate that the allometry-free shape data have an even higher level of morphological integration than the data that contain the allometric component of the shape variation. J. Exp. Zool. (Mol. Dev. Evol) 314B:527-538, 2010. (C) 2010 Wiley-Liss, Inc.
T2  - Journal of Experimental Zoology Part B-Molecular and Developmental Evolution
T1  - Testing the Hypothesis of Morphological Integration on a Skull of a Vertebrate With a Biphasic Life Cycle: A Case Study of the Alpine Newt
IS  - 7
VL  - null
EP  - 538
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1334
ER  - 

@article{
author = "Ivanović, Ana T and Kalezić, Miloš L.",
year = "2010",
abstract = "In this article, we explore the possible influences of the developmental and functional relationships between skeletal elements on the pattern of morphological integration in the adult skull of the alpine newt. Like many tailed amphibians, the alpine newt has a biphasic life cycle, which implies the possibility that two distinct sets of constraints on development and function of the cranial skeleton may act at different times. We study how trait covariation, resulting from processes early in development, affects patterns of covariation at the adult stage. We test whether the observed patterns of integration are consistent with those predicted from three a priori hypothesized sources of integration: developmental timing, hormonally mediated growth/remodeling during metamorphosis, and developmental and functional relationships. The analyses of the covariation among the landmarks in the dorsal and ventral alpine newt craniums yield somewhat contrasting results. Our results do not indicate a clear correspondence between the observed variations in the skull shape and any of the three proposed hypotheses. No traceable reflection of hypothesized developmental relationships in the pattern of morphological integration/modularity in the adult skull indicate that covariation structure is continually restructured by overlaying variation introduced through developmental and environmental factors at different stages of development. This finding supports the recently elaborated palimpsest view of morphological integration. Also, our results indicate that the allometry-free shape data have an even higher level of morphological integration than the data that contain the allometric component of the shape variation. J. Exp. Zool. (Mol. Dev. Evol) 314B:527-538, 2010. (C) 2010 Wiley-Liss, Inc.",
journal = "Journal of Experimental Zoology Part B-Molecular and Developmental Evolution",
title = "Testing the Hypothesis of Morphological Integration on a Skull of a Vertebrate With a Biphasic Life Cycle: A Case Study of the Alpine Newt",
number = "7",
volume = "null",
pages = "538",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1334"
}

Ivanović, A. T.,& Kalezić, M. L.. (2010). Testing the Hypothesis of Morphological Integration on a Skull of a Vertebrate With a Biphasic Life Cycle: A Case Study of the Alpine Newt. in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution, null(7).
https://hdl.handle.net/21.15107/rcub_ibiss_1334

Ivanović AT, Kalezić ML. Testing the Hypothesis of Morphological Integration on a Skull of a Vertebrate With a Biphasic Life Cycle: A Case Study of the Alpine Newt. in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution. 2010;null(7):null-538.
https://hdl.handle.net/21.15107/rcub_ibiss_1334 .

Ivanović, Ana T, Kalezić, Miloš L., "Testing the Hypothesis of Morphological Integration on a Skull of a Vertebrate With a Biphasic Life Cycle: A Case Study of the Alpine Newt" in Journal of Experimental Zoology Part B-Molecular and Developmental Evolution, null, no. 7 (2010),
https://hdl.handle.net/21.15107/rcub_ibiss_1334 .

TY  - JOUR
AU  - Cvijanović, Milena
AU  - Todorović, Biljana
AU  - Simić, Vladica M
AU  - Ivanović, Ana T
PY  - 2009
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1482
AB  - We studied intraspecific and interspecific variations of early life-history traits for four crested newt species with different habitat preferences. Although we found considerable variation in size and growth rate between offspring of conspecific females, the species effect appeared to be much more pronounced. The crested newt species we examined differed in egg size, size of larvae at hatching and growth rate. Triturus dobrogicus appeared to be the outlier species among these species, and showed (1) the smallest egg size, (2) the smallest larval size at hatching and (3) the longest larval period, resulting in the largest metamorphosed juveniles.
PB  - Abingdon: Taylor and Francis Ltd.
T2  - Journal of Natural History
T1  - Interspecific differences in early life-history traits in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae) from the Balkan Peninsula
IS  - 7-8
VL  - 43
DO  - 10.1080/00222930802585794
EP  - 477
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1482
ER  - 

@article{
author = "Cvijanović, Milena and Todorović, Biljana and Simić, Vladica M and Ivanović, Ana T",
year = "2009",
abstract = "We studied intraspecific and interspecific variations of early life-history traits for four crested newt species with different habitat preferences. Although we found considerable variation in size and growth rate between offspring of conspecific females, the species effect appeared to be much more pronounced. The crested newt species we examined differed in egg size, size of larvae at hatching and growth rate. Triturus dobrogicus appeared to be the outlier species among these species, and showed (1) the smallest egg size, (2) the smallest larval size at hatching and (3) the longest larval period, resulting in the largest metamorphosed juveniles.",
publisher = "Abingdon: Taylor and Francis Ltd.",
journal = "Journal of Natural History",
title = "Interspecific differences in early life-history traits in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae) from the Balkan Peninsula",
number = "7-8",
volume = "43",
doi = "10.1080/00222930802585794",
pages = "477",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1482"
}

Cvijanović, M., Todorović, B., Simić, V. M.,& Ivanović, A. T.. (2009). Interspecific differences in early life-history traits in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae) from the Balkan Peninsula. in Journal of Natural History
Abingdon: Taylor and Francis Ltd.., 43(7-8).
https://doi.org/10.1080/00222930802585794
https://hdl.handle.net/21.15107/rcub_ibiss_1482

Cvijanović M, Todorović B, Simić VM, Ivanović AT. Interspecific differences in early life-history traits in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae) from the Balkan Peninsula. in Journal of Natural History. 2009;43(7-8):null-477.
doi:10.1080/00222930802585794
https://hdl.handle.net/21.15107/rcub_ibiss_1482 .

Cvijanović, Milena, Todorović, Biljana, Simić, Vladica M, Ivanović, Ana T, "Interspecific differences in early life-history traits in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae) from the Balkan Peninsula" in Journal of Natural History, 43, no. 7-8 (2009),
https://doi.org/10.1080/00222930802585794 .,
https://hdl.handle.net/21.15107/rcub_ibiss_1482 .

TY  - JOUR
AU  - Denoel, Mathieu
AU  - Ivanović, Ana T
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2009
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1419
AB  - Background: Sexual size dimorphism (SSD) is a key evolutionary feature that has been studied in many organisms. In a wide range of species, this pattern is more complex because of polymorphism within each sex. However, it is not known whether the magnitude and direction of SSD could be affected by alternative developmental trajectories within sexes. Our aim was to test whether an intrasexual polymorphism, facultative paedomorphosis (a process in which the development of somatic and gonadal tissues differs in alternative morphs), could affect SSD variation patterns in European newts. Results: We report here the first evidence that SSD varies depending on the paedomorphic or metamorphic ontogenetic pathway. In species with a consistent female-biased SSD, paedomorphosis decreased the SSD level, but did not affect its direction. In species with moderate female-biased SSD or variable SSD patterns, paedomorphosis changed the magnitude, or both the magnitude and the direction, of SSD. Conclusion: Our study highlights the importance of developmental processes for shaping SSD patterns in populations in which contrasting life-history pathways evolved. European newts express different SSD patterns depending on their developmental pathway (i.e., metamorphosis versus paedomorphosis), as well as their species and population. These findings emphasize the importance of studying alternative morphotypes, which are found in a wide range of animal groups, to understand the evolution of SSD.
T2  - Bmc Evolutionary Biology
T1  - Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts
IS  - null
VL  - 9
EP  - na
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1419
ER  - 

@article{
author = "Denoel, Mathieu and Ivanović, Ana T and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2009",
abstract = "Background: Sexual size dimorphism (SSD) is a key evolutionary feature that has been studied in many organisms. In a wide range of species, this pattern is more complex because of polymorphism within each sex. However, it is not known whether the magnitude and direction of SSD could be affected by alternative developmental trajectories within sexes. Our aim was to test whether an intrasexual polymorphism, facultative paedomorphosis (a process in which the development of somatic and gonadal tissues differs in alternative morphs), could affect SSD variation patterns in European newts. Results: We report here the first evidence that SSD varies depending on the paedomorphic or metamorphic ontogenetic pathway. In species with a consistent female-biased SSD, paedomorphosis decreased the SSD level, but did not affect its direction. In species with moderate female-biased SSD or variable SSD patterns, paedomorphosis changed the magnitude, or both the magnitude and the direction, of SSD. Conclusion: Our study highlights the importance of developmental processes for shaping SSD patterns in populations in which contrasting life-history pathways evolved. European newts express different SSD patterns depending on their developmental pathway (i.e., metamorphosis versus paedomorphosis), as well as their species and population. These findings emphasize the importance of studying alternative morphotypes, which are found in a wide range of animal groups, to understand the evolution of SSD.",
journal = "Bmc Evolutionary Biology",
title = "Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts",
number = "null",
volume = "9",
pages = "na",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1419"
}

Denoel, M., Ivanović, A. T., Džukić, G. V.,& Kalezić, M. L.. (2009). Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts. in Bmc Evolutionary Biology, 9(null).
https://hdl.handle.net/21.15107/rcub_ibiss_1419

Denoel M, Ivanović AT, Džukić GV, Kalezić ML. Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts. in Bmc Evolutionary Biology. 2009;9(null):null-na.
https://hdl.handle.net/21.15107/rcub_ibiss_1419 .

Denoel, Mathieu, Ivanović, Ana T, Džukić, Georg V., Kalezić, Miloš L., "Sexual size dimorphism in the evolutionary context of facultative paedomorphosis: insights from European newts" in Bmc Evolutionary Biology, 9, no. null (2009),
https://hdl.handle.net/21.15107/rcub_ibiss_1419 .

TY  - JOUR
AU  - Cvijanović, Milena
AU  - Ivanović, Ana T
AU  - Tomašević Kolarov, Nataša
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2009
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1470
AB  - When the phenotypic divergence within a monophyletic group is characterised by parallel variation of different phenotypic traits, it is very likely that the environment through constraints and/or selection has affected the developmental pathways simultaneously. Such patterns of phenotypic divergence characterise the phenotypic evolution of the crested newts (Triturus cristatus superspecies). In this study, we have examined interspecific variations in the embryonic development of four crested newt species. The species are similar with respect to some basic developmental traits, some morphologically defined developmental stages and the survival rate during early embryogenesis. However, there is significant variation in the developmental rate, as well as differences in the pattern of correlation amongst analysed life-history and developmental traits. Consistent with previous studies, T. dobrogicus appears to be an outlier species, with the longest embryonic period and a significantly different correlation pattern for early life-history and developmental traits. We suggest that the invasion of a novel aquatic environment by T. dobrogicus resulted in large-scale directional changes in development, which could explain parallel change in numerous phenotypic and life-history traits with a high rate of evolution.
T2  - Contributions to Zoology
T1  - Early ontogeny shows the same interspecific variation as natural history parameters in the crested newt (Triturus cristatus superspecies) (Caudata, Salamandridae)
IS  - 2
VL  - 78
EP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1470
ER  - 

@article{
author = "Cvijanović, Milena and Ivanović, Ana T and Tomašević Kolarov, Nataša and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2009",
abstract = "When the phenotypic divergence within a monophyletic group is characterised by parallel variation of different phenotypic traits, it is very likely that the environment through constraints and/or selection has affected the developmental pathways simultaneously. Such patterns of phenotypic divergence characterise the phenotypic evolution of the crested newts (Triturus cristatus superspecies). In this study, we have examined interspecific variations in the embryonic development of four crested newt species. The species are similar with respect to some basic developmental traits, some morphologically defined developmental stages and the survival rate during early embryogenesis. However, there is significant variation in the developmental rate, as well as differences in the pattern of correlation amongst analysed life-history and developmental traits. Consistent with previous studies, T. dobrogicus appears to be an outlier species, with the longest embryonic period and a significantly different correlation pattern for early life-history and developmental traits. We suggest that the invasion of a novel aquatic environment by T. dobrogicus resulted in large-scale directional changes in development, which could explain parallel change in numerous phenotypic and life-history traits with a high rate of evolution.",
journal = "Contributions to Zoology",
title = "Early ontogeny shows the same interspecific variation as natural history parameters in the crested newt (Triturus cristatus superspecies) (Caudata, Salamandridae)",
number = "2",
volume = "78",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1470"
}

Cvijanović, M., Ivanović, A. T., Tomašević Kolarov, N., Džukić, G. V.,& Kalezić, M. L.. (2009). Early ontogeny shows the same interspecific variation as natural history parameters in the crested newt (Triturus cristatus superspecies) (Caudata, Salamandridae). in Contributions to Zoology, 78(2).
https://hdl.handle.net/21.15107/rcub_ibiss_1470

Cvijanović M, Ivanović AT, Tomašević Kolarov N, Džukić GV, Kalezić ML. Early ontogeny shows the same interspecific variation as natural history parameters in the crested newt (Triturus cristatus superspecies) (Caudata, Salamandridae). in Contributions to Zoology. 2009;78(2):null-50.
https://hdl.handle.net/21.15107/rcub_ibiss_1470 .

Cvijanović, Milena, Ivanović, Ana T, Tomašević Kolarov, Nataša, Džukić, Georg V., Kalezić, Miloš L., "Early ontogeny shows the same interspecific variation as natural history parameters in the crested newt (Triturus cristatus superspecies) (Caudata, Salamandridae)" in Contributions to Zoology, 78, no. 2 (2009),
https://hdl.handle.net/21.15107/rcub_ibiss_1470 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Sotiropoulos, Konstantinos
AU  - Cvijanović, Milena
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2008
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1509
AB  - We used a phylogenetic perspective in an examination of the direction and extent of sexual dimorphism in body size and body shape in European newts from the Balkan Peninsula (alpine newts, Mesotriton alpestris; crested newts, Triturus cristatus superspecies; smooth newts, Lissotriton vulgaris). We found a strong, female-biased sexual size dimorphism (SSD) in the analysed clades of alpine newt, whereas within crested newts we found a less stringent female-biased SSD in Triturus carnifex, Triturus macedonicus and Triturus karelinii, and no significant SSD in T. cristatus or Triturus dobrogicus. Among the smooth newts, we found male-biased SSD in Lissotriton vulgaris vularis and Lissotriton vulgaris greacus and no SSD in Lissotriton vulgaris meridionalis. Most of these newts also exhibit a significant sexual dimorphism in body shape, which varied more randomly than body size, regardless of SSD level. Female and male body size as well as the degree of SSD displayed statistically significant phylogenetic signal, while sexual dimorphism in body shape was phylogenetically independent. The relationship between independent contrast data for female size and male size indicated that SSD in European newts could be driven by a disproportionate increase in female size as increase in female size was not accompanied by a proportional increase in male size.
T2  - Journal of Zoological Systematics and Evolutionary Research
T1  - Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula
IS  - 4
VL  - 46
DO  - 10.1111/j.1439-0469.2008.00479.x
SP  - 381
EP  - 387
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1509
ER  - 

@article{
author = "Ivanović, Ana T and Sotiropoulos, Konstantinos and Cvijanović, Milena and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2008",
abstract = "We used a phylogenetic perspective in an examination of the direction and extent of sexual dimorphism in body size and body shape in European newts from the Balkan Peninsula (alpine newts, Mesotriton alpestris; crested newts, Triturus cristatus superspecies; smooth newts, Lissotriton vulgaris). We found a strong, female-biased sexual size dimorphism (SSD) in the analysed clades of alpine newt, whereas within crested newts we found a less stringent female-biased SSD in Triturus carnifex, Triturus macedonicus and Triturus karelinii, and no significant SSD in T. cristatus or Triturus dobrogicus. Among the smooth newts, we found male-biased SSD in Lissotriton vulgaris vularis and Lissotriton vulgaris greacus and no SSD in Lissotriton vulgaris meridionalis. Most of these newts also exhibit a significant sexual dimorphism in body shape, which varied more randomly than body size, regardless of SSD level. Female and male body size as well as the degree of SSD displayed statistically significant phylogenetic signal, while sexual dimorphism in body shape was phylogenetically independent. The relationship between independent contrast data for female size and male size indicated that SSD in European newts could be driven by a disproportionate increase in female size as increase in female size was not accompanied by a proportional increase in male size.",
journal = "Journal of Zoological Systematics and Evolutionary Research",
title = "Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula",
number = "4",
volume = "46",
doi = "10.1111/j.1439-0469.2008.00479.x",
pages = "381-387",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1509"
}

Ivanović, A. T., Sotiropoulos, K., Cvijanović, M., Džukić, G. V.,& Kalezić, M. L.. (2008). Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula. in Journal of Zoological Systematics and Evolutionary Research, 46(4), 381-387.
https://doi.org/10.1111/j.1439-0469.2008.00479.x
https://hdl.handle.net/21.15107/rcub_ibiss_1509

Ivanović AT, Sotiropoulos K, Cvijanović M, Džukić GV, Kalezić ML. Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula. in Journal of Zoological Systematics and Evolutionary Research. 2008;46(4):381-387.
doi:10.1111/j.1439-0469.2008.00479.x
https://hdl.handle.net/21.15107/rcub_ibiss_1509 .

Ivanović, Ana T, Sotiropoulos, Konstantinos, Cvijanović, Milena, Džukić, Georg V., Kalezić, Miloš L., "Sexual size and shape evolution in European newts (Amphibia: Caudata: Salamandridae) on the Balkan Peninsula" in Journal of Zoological Systematics and Evolutionary Research, 46, no. 4 (2008):381-387,
https://doi.org/10.1111/j.1439-0469.2008.00479.x .,
https://hdl.handle.net/21.15107/rcub_ibiss_1509 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Tomašević Kolarov, Nataša
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2008
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1492
AB  - We explored the interspecific variation patterns in the limb skeleton of four crested newts that underwent an extensive evolutionary diversification. All studied species shared the same basipodial pattern, within which the carpus exhibited much more variation than the tarsus. Morphometric analysis of stylopodium, zeugopodium, and the third metapodial element showed that the species differed in the size of skeletal elements, but they shared common allometric slopes. In comparison to the other crested newts, T dobrogicus appeared as the outlier due to (1) significantly shorter stylopodium and zeugopodium relative to body size and (2) rather different anatomical designs regarding ossification level of the basipodium. Based on these results, it is suggested that the observed T dobrogicus uniqueness originates from allometric heterochrony paralleled by a profound switch in habitat preference.
T2  - Annales Zoologici Fennici
T1  - Evolutionary diversification of the limb skeleton in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae)
IS  - 6
VL  - 45
EP  - 535
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1492
ER  - 

@article{
author = "Ivanović, Ana T and Tomašević Kolarov, Nataša and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2008",
abstract = "We explored the interspecific variation patterns in the limb skeleton of four crested newts that underwent an extensive evolutionary diversification. All studied species shared the same basipodial pattern, within which the carpus exhibited much more variation than the tarsus. Morphometric analysis of stylopodium, zeugopodium, and the third metapodial element showed that the species differed in the size of skeletal elements, but they shared common allometric slopes. In comparison to the other crested newts, T dobrogicus appeared as the outlier due to (1) significantly shorter stylopodium and zeugopodium relative to body size and (2) rather different anatomical designs regarding ossification level of the basipodium. Based on these results, it is suggested that the observed T dobrogicus uniqueness originates from allometric heterochrony paralleled by a profound switch in habitat preference.",
journal = "Annales Zoologici Fennici",
title = "Evolutionary diversification of the limb skeleton in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae)",
number = "6",
volume = "45",
pages = "535",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1492"
}

Ivanović, A. T., Tomašević Kolarov, N., Džukić, G. V.,& Kalezić, M. L.. (2008). Evolutionary diversification of the limb skeleton in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae). in Annales Zoologici Fennici, 45(6).
https://hdl.handle.net/21.15107/rcub_ibiss_1492

Ivanović AT, Tomašević Kolarov N, Džukić GV, Kalezić ML. Evolutionary diversification of the limb skeleton in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae). in Annales Zoologici Fennici. 2008;45(6):null-535.
https://hdl.handle.net/21.15107/rcub_ibiss_1492 .

Ivanović, Ana T, Tomašević Kolarov, Nataša, Džukić, Georg V., Kalezić, Miloš L., "Evolutionary diversification of the limb skeleton in crested newts (Triturus cristatus superspecies, Caudata, Salamandridae)" in Annales Zoologici Fennici, 45, no. 6 (2008),
https://hdl.handle.net/21.15107/rcub_ibiss_1492 .

TY  - JOUR
AU  - Ivanović, Ana T
AU  - Sotiropoulos, Konstantinos
AU  - Vukov, Tanja
AU  - Eleftherakos, Karolos
AU  - Džukić, Georg V.
AU  - Polymeni, Rosa Maria
AU  - Kalezić, Miloš L.
PY  - 2008
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1511
AB  - In the present study, we investigated the degree of congruence between phylogeny, as inferred from mitochondrial (mt)DNA sequences, and cranium shape variation of crested newts (Triturus cristatus superspecies) in the Balkans. These newts belong to four phylogenetic clades defined by mtDNA analysis, and significantly differed in cranial shape. Allometry explained a high percentage of shape variation in crested newts. The clade-specific allometric slopes significantly diverged for both the ventral cranium and dorsal cranium, indicating that differences in shape between clades could not be a simple consequence of their difference in size. The analysis of hierarchical and spatial variation showed similarity in the patterns of global and spatially localized hierarchical variation of cranial shape. We also found significant congruence between the pattern of cranial shape variation and molecular phylogeny. The differences in morphology of Triturus dobrogicus in comparison to other crested newt clades, including marked differences in cranium shape, is discussed in the context of the evolution and ecology of crested newts. (C) 2008 The Linnean Society of London, Biological Journal of the Linnean Society, 2008, 95, 348-360.
T2  - Biological Journal of the Linnean Society
T1  - Cranial shape variation and molecular phylogenetic structure of crested newts (Triturus cristatus superspecies: Caudata, Salamandridae) in the Balkans
IS  - 2
VL  - 95
EP  - 360
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1511
ER  - 

@article{
author = "Ivanović, Ana T and Sotiropoulos, Konstantinos and Vukov, Tanja and Eleftherakos, Karolos and Džukić, Georg V. and Polymeni, Rosa Maria and Kalezić, Miloš L.",
year = "2008",
abstract = "In the present study, we investigated the degree of congruence between phylogeny, as inferred from mitochondrial (mt)DNA sequences, and cranium shape variation of crested newts (Triturus cristatus superspecies) in the Balkans. These newts belong to four phylogenetic clades defined by mtDNA analysis, and significantly differed in cranial shape. Allometry explained a high percentage of shape variation in crested newts. The clade-specific allometric slopes significantly diverged for both the ventral cranium and dorsal cranium, indicating that differences in shape between clades could not be a simple consequence of their difference in size. The analysis of hierarchical and spatial variation showed similarity in the patterns of global and spatially localized hierarchical variation of cranial shape. We also found significant congruence between the pattern of cranial shape variation and molecular phylogeny. The differences in morphology of Triturus dobrogicus in comparison to other crested newt clades, including marked differences in cranium shape, is discussed in the context of the evolution and ecology of crested newts. (C) 2008 The Linnean Society of London, Biological Journal of the Linnean Society, 2008, 95, 348-360.",
journal = "Biological Journal of the Linnean Society",
title = "Cranial shape variation and molecular phylogenetic structure of crested newts (Triturus cristatus superspecies: Caudata, Salamandridae) in the Balkans",
number = "2",
volume = "95",
pages = "360",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1511"
}

Ivanović, A. T., Sotiropoulos, K., Vukov, T., Eleftherakos, K., Džukić, G. V., Polymeni, R. M.,& Kalezić, M. L.. (2008). Cranial shape variation and molecular phylogenetic structure of crested newts (Triturus cristatus superspecies: Caudata, Salamandridae) in the Balkans. in Biological Journal of the Linnean Society, 95(2).
https://hdl.handle.net/21.15107/rcub_ibiss_1511

Ivanović AT, Sotiropoulos K, Vukov T, Eleftherakos K, Džukić GV, Polymeni RM, Kalezić ML. Cranial shape variation and molecular phylogenetic structure of crested newts (Triturus cristatus superspecies: Caudata, Salamandridae) in the Balkans. in Biological Journal of the Linnean Society. 2008;95(2):null-360.
https://hdl.handle.net/21.15107/rcub_ibiss_1511 .

Ivanović, Ana T, Sotiropoulos, Konstantinos, Vukov, Tanja, Eleftherakos, Karolos, Džukić, Georg V., Polymeni, Rosa Maria, Kalezić, Miloš L., "Cranial shape variation and molecular phylogenetic structure of crested newts (Triturus cristatus superspecies: Caudata, Salamandridae) in the Balkans" in Biological Journal of the Linnean Society, 95, no. 2 (2008),
https://hdl.handle.net/21.15107/rcub_ibiss_1511 .

TY  - JOUR
AU  - Vukov, Tanja
AU  - Ivanović, Ana T
AU  - Tomašević Kolarov, Nataša
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2007
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1596
AB  - A significant positive correlation between braincase size (used as a proxy for brain size) and body size was found in six European newt species, with considerable variation among the species. The observed variation in braincase size, however, could not be solely explained by variation in body size. In spite of female-biased sexual dimorphism in body size, which was especially pronounced in Triturus alpestris, the sexes did not differ in braincase size. We also found that T. dobrogicus had a much smaller braincase than would be expected considering its body size. This in addition to its different morphology and ecology sets it apart from related species of the crested newt group.
T2  - Annales Zoologici Fennici
T1  - Braincase-body size relations in European newts (Triturus spp., Salamandridae, Caudata): does size matter?
IS  - 3
VL  - 44
EP  - 239
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1596
ER  - 

@article{
author = "Vukov, Tanja and Ivanović, Ana T and Tomašević Kolarov, Nataša and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2007",
abstract = "A significant positive correlation between braincase size (used as a proxy for brain size) and body size was found in six European newt species, with considerable variation among the species. The observed variation in braincase size, however, could not be solely explained by variation in body size. In spite of female-biased sexual dimorphism in body size, which was especially pronounced in Triturus alpestris, the sexes did not differ in braincase size. We also found that T. dobrogicus had a much smaller braincase than would be expected considering its body size. This in addition to its different morphology and ecology sets it apart from related species of the crested newt group.",
journal = "Annales Zoologici Fennici",
title = "Braincase-body size relations in European newts (Triturus spp., Salamandridae, Caudata): does size matter?",
number = "3",
volume = "44",
pages = "239",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1596"
}

Vukov, T., Ivanović, A. T., Tomašević Kolarov, N., Džukić, G. V.,& Kalezić, M. L.. (2007). Braincase-body size relations in European newts (Triturus spp., Salamandridae, Caudata): does size matter?. in Annales Zoologici Fennici, 44(3).
https://hdl.handle.net/21.15107/rcub_ibiss_1596

Vukov T, Ivanović AT, Tomašević Kolarov N, Džukić GV, Kalezić ML. Braincase-body size relations in European newts (Triturus spp., Salamandridae, Caudata): does size matter?. in Annales Zoologici Fennici. 2007;44(3):null-239.
https://hdl.handle.net/21.15107/rcub_ibiss_1596 .

Vukov, Tanja, Ivanović, Ana T, Tomašević Kolarov, Nataša, Džukić, Georg V., Kalezić, Miloš L., "Braincase-body size relations in European newts (Triturus spp., Salamandridae, Caudata): does size matter?" in Annales Zoologici Fennici, 44, no. 3 (2007),
https://hdl.handle.net/21.15107/rcub_ibiss_1596 .