TY  - JOUR
AU  - Tomović, Ljiljana
AU  - Anđelković, Marko
AU  - Golubović, Ana
AU  - Arsovski, Dragan
AU  - Ajtić, Rastko
AU  - Sterijovski, Bogoljub
AU  - Nikolić, Sonja
AU  - Crnobrnja-Isailović, Jelka
AU  - Lakušić, Margareta
AU  - Bonnet, Xavier
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5478
AB  - Insular populations offer excellent opportunities to study the factors that influence phenotypes. We observed island dwarfism in a widespread snake, the nose-horned viper (Vipera ammodytes). Island vipers were ~20% smaller than mainland individuals. They also produced fewer and smaller offspring. In snakes, food availability has a positive influence on body size, fecundity and offspring size. Consequently, low energy intake is a plausible explanation for insular dwarfism. The diet of island vipers was principally represented by lizards and centipedes, whereas the most profitable prey items (e.g. rodents) were regularly found in the stomach of mainland vipers. Furthermore, the proportion of individuals captured with a full stomach and good body condition were lower on the island compared with the mainland. Thus, island vipers were likely to be experiencing permanent energy restriction, with cascading effects on adult body size and reproductive output. Large prey promotes high relative jaw length in snakes. Island
vipers displayed smaller relative jaw length compared with mainland populations, suggesting that plasticity played a role in insular dwarfism. But the difference in relative tail length between island and mainland populations, a trait not subjected to food-induced plasticity, indicates local adaptation. Both plasticity and adaptation might influence the phenotype of island vipers.
PB  - Oxford University Press on behalf of The Linnean Society of London
T2  - Biological Journal of the Linnean Society
T1  - Dwarf vipers on a small island: body size, diet and fecundity correlates
IS  - 2
VL  - 137
DO  - 10.1093/biolinnean/blac085
SP  - 267
EP  - 279
ER  - 

@article{
author = "Tomović, Ljiljana and Anđelković, Marko and Golubović, Ana and Arsovski, Dragan and Ajtić, Rastko and Sterijovski, Bogoljub and Nikolić, Sonja and Crnobrnja-Isailović, Jelka and Lakušić, Margareta and Bonnet, Xavier",
year = "2022",
abstract = "Insular populations offer excellent opportunities to study the factors that influence phenotypes. We observed island dwarfism in a widespread snake, the nose-horned viper (Vipera ammodytes). Island vipers were ~20% smaller than mainland individuals. They also produced fewer and smaller offspring. In snakes, food availability has a positive influence on body size, fecundity and offspring size. Consequently, low energy intake is a plausible explanation for insular dwarfism. The diet of island vipers was principally represented by lizards and centipedes, whereas the most profitable prey items (e.g. rodents) were regularly found in the stomach of mainland vipers. Furthermore, the proportion of individuals captured with a full stomach and good body condition were lower on the island compared with the mainland. Thus, island vipers were likely to be experiencing permanent energy restriction, with cascading effects on adult body size and reproductive output. Large prey promotes high relative jaw length in snakes. Island
vipers displayed smaller relative jaw length compared with mainland populations, suggesting that plasticity played a role in insular dwarfism. But the difference in relative tail length between island and mainland populations, a trait not subjected to food-induced plasticity, indicates local adaptation. Both plasticity and adaptation might influence the phenotype of island vipers.",
publisher = "Oxford University Press on behalf of The Linnean Society of London",
journal = "Biological Journal of the Linnean Society",
title = "Dwarf vipers on a small island: body size, diet and fecundity correlates",
number = "2",
volume = "137",
doi = "10.1093/biolinnean/blac085",
pages = "267-279"
}

Tomović, L., Anđelković, M., Golubović, A., Arsovski, D., Ajtić, R., Sterijovski, B., Nikolić, S., Crnobrnja-Isailović, J., Lakušić, M.,& Bonnet, X.. (2022). Dwarf vipers on a small island: body size, diet and fecundity correlates. in Biological Journal of the Linnean Society
Oxford University Press on behalf of The Linnean Society of London., 137(2), 267-279.
https://doi.org/10.1093/biolinnean/blac085

Tomović L, Anđelković M, Golubović A, Arsovski D, Ajtić R, Sterijovski B, Nikolić S, Crnobrnja-Isailović J, Lakušić M, Bonnet X. Dwarf vipers on a small island: body size, diet and fecundity correlates. in Biological Journal of the Linnean Society. 2022;137(2):267-279.
doi:10.1093/biolinnean/blac085 .

Tomović, Ljiljana, Anđelković, Marko, Golubović, Ana, Arsovski, Dragan, Ajtić, Rastko, Sterijovski, Bogoljub, Nikolić, Sonja, Crnobrnja-Isailović, Jelka, Lakušić, Margareta, Bonnet, Xavier, "Dwarf vipers on a small island: body size, diet and fecundity correlates" in Biological Journal of the Linnean Society, 137, no. 2 (2022):267-279,
https://doi.org/10.1093/biolinnean/blac085 . .

TY  - JOUR
AU  - Anđelković, Marko
AU  - Nikolić, Sonja
AU  - Tomović, Ljiljana
PY  - 2021
UR  - https://www.thebhs.org/publications/the-herpetological-journal/volume-31-number-3-july-2021/3308-04-reproductive-characteristics-diet-composition-and-fat-reserves-of-nose-horned-vipers-i-vipera-ammodytes-i
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4443
AB  - Long-term ecological studies are usually both time-consuming and costly, particularly when conducted on species with low detectability, such as vipers. An alternative, non-expensive method for obtaining detailed information about numerous important ecological traits, e.g. size at maturity, reproductive output, diet composition and amount of body reserves, are dissections of museum specimens. We dissected 237 museum specimens (125 males and 112 females of all age classes) of the nose-horned vipers Vipera ammodytes from the central and western regions of the Balkan Peninsula. Their reproductive and digestive systems were examined, and fat stores estimated. Relative testes volumes were significantly higher in adults than in subadults. Also, we found seasonal variation of testes volumes in adult males. Females became mature at around 43.8 cm snout-to-vent length (SVL); 38.1 % of adult females were pregnant (i.e. had developed eggs/embryos, suggesting bi- or even triennial reproduction frequency). The average number of developed eggs/embryos was 9.1 (range 5–17). As expected, there was a positive correlation between maternal body size (SVL) and the number of embryos. The nose-horned vipers fed predominately on lizards (64.7 %) and mammals (31.9 %); only a few remains of different prey were found (birds, snakes and centipedes). Analyses of inter-sexual differences showed that males more frequently consumed lizards than mammals, while in females both types of prey were equally present. A subtle ontogenetic change in diet was recorded, with a shift from lizards towards mammals. Adult individuals had more fat reserves than subadults, but there were no inter-sexual differences, and gravid females had similar amounts of fat reserves as non-gravid individuals. The data about reproductive output and dietary specialisation demonstrate the vulnerability of the species, generally regarded as “quite common” and non-threatened. This study might help in the establishment of future conservation studies, and management of the impacts of anthropogenic factors on populations of V. ammodytes in the central and western Balkans.
PB  - London: British Herpetological Society
T2  - Herpetological Journal
T1  - Reproductive characteristics, diet composition and fat reserves of nose-horned vipers (Vipera ammodytes)
IS  - 3
VL  - 31
DO  - 10.33256/31.3.151161
SP  - 151
EP  - 161
ER  - 

@article{
author = "Anđelković, Marko and Nikolić, Sonja and Tomović, Ljiljana",
year = "2021",
abstract = "Long-term ecological studies are usually both time-consuming and costly, particularly when conducted on species with low detectability, such as vipers. An alternative, non-expensive method for obtaining detailed information about numerous important ecological traits, e.g. size at maturity, reproductive output, diet composition and amount of body reserves, are dissections of museum specimens. We dissected 237 museum specimens (125 males and 112 females of all age classes) of the nose-horned vipers Vipera ammodytes from the central and western regions of the Balkan Peninsula. Their reproductive and digestive systems were examined, and fat stores estimated. Relative testes volumes were significantly higher in adults than in subadults. Also, we found seasonal variation of testes volumes in adult males. Females became mature at around 43.8 cm snout-to-vent length (SVL); 38.1 % of adult females were pregnant (i.e. had developed eggs/embryos, suggesting bi- or even triennial reproduction frequency). The average number of developed eggs/embryos was 9.1 (range 5–17). As expected, there was a positive correlation between maternal body size (SVL) and the number of embryos. The nose-horned vipers fed predominately on lizards (64.7 %) and mammals (31.9 %); only a few remains of different prey were found (birds, snakes and centipedes). Analyses of inter-sexual differences showed that males more frequently consumed lizards than mammals, while in females both types of prey were equally present. A subtle ontogenetic change in diet was recorded, with a shift from lizards towards mammals. Adult individuals had more fat reserves than subadults, but there were no inter-sexual differences, and gravid females had similar amounts of fat reserves as non-gravid individuals. The data about reproductive output and dietary specialisation demonstrate the vulnerability of the species, generally regarded as “quite common” and non-threatened. This study might help in the establishment of future conservation studies, and management of the impacts of anthropogenic factors on populations of V. ammodytes in the central and western Balkans.",
publisher = "London: British Herpetological Society",
journal = "Herpetological Journal",
title = "Reproductive characteristics, diet composition and fat reserves of nose-horned vipers (Vipera ammodytes)",
number = "3",
volume = "31",
doi = "10.33256/31.3.151161",
pages = "151-161"
}

Anđelković, M., Nikolić, S.,& Tomović, L.. (2021). Reproductive characteristics, diet composition and fat reserves of nose-horned vipers (Vipera ammodytes). in Herpetological Journal
London: British Herpetological Society., 31(3), 151-161.
https://doi.org/10.33256/31.3.151161

Anđelković M, Nikolić S, Tomović L. Reproductive characteristics, diet composition and fat reserves of nose-horned vipers (Vipera ammodytes). in Herpetological Journal. 2021;31(3):151-161.
doi:10.33256/31.3.151161 .

Anđelković, Marko, Nikolić, Sonja, Tomović, Ljiljana, "Reproductive characteristics, diet composition and fat reserves of nose-horned vipers (Vipera ammodytes)" in Herpetological Journal, 31, no. 3 (2021):151-161,
https://doi.org/10.33256/31.3.151161 . .

TY  - JOUR
AU  - Urošević, Aleksandar
AU  - Tomović, Ljiljana
AU  - Crnobrnja-Isailović, Jelka
AU  - Krizmanić, Imre
AU  - Ajtić, Rastko
AU  - Labus, Nenad
AU  - Anđelković, Marko
AU  - Nikolić, Sonja
AU  - Jović, Danko
AU  - Krstić, Milivoj
AU  - Maričić, Marko
AU  - Simović, Aleksandar
AU  - Paunović, Ana
AU  - Žikić, Vladimir
AU  - Ćorović, Jelena
AU  - Vučić, Tijana
AU  - Čubrić, Tijana
AU  - Džukić, Georg
PY  - 2020
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5149
AB  - In this study, we present an updated distribution data of Anguis fragilis
complex species in Serbia. The dataset consists of literature and Internet records,
coupled with previously unpublished distribution data gathered in the field. Of the two species of the complex, Anguis fragilis is present in the western and southern
parts of the country while Anguis colchica is present in the northeastern and
eastern parts of the country. There is an absence of both species in the
northernmost parts of the country, due to the lack of adequate habitat. The field
records tend to be more abundant in the Mountain-valley altitudinal region, and
scarcer and more scattered in the Peripannonian and Pannonian altitudinal regions,
which can partly be attributed to the sampling bias. The location and width of the
contact zone are still poorly known. It’s hypothesized to follow the Velika Morava
river valley to the south and then the boundary between the Carpathian-Balkan and
Rhodope mountain ranges in the southeast, but the hybrid zone could be situated
more to the west. There is a certain discrepancy, in the literature, between the
contact zone proposed by morphological data, and the one proposed by molecular
sampling. That stresses the need for thorough sampling in the region and further
analyses. Finally, since the taxonomic split between the cryptic slow worm taxa
was not yet recognized in our national nomenclature, this paper also presents the
official Serbian names for the two species. The species Anguis fragilis will keep
the standard Serbian name “Slepić”, while for the species Anguis colchica we
propose the name “Istočni slepić”.
AB  - У овом раду, приказујемо ажуриране податке о дистрибуцији
комплекса врста слепића (Anguis fragilis complex) у Србији. Подаци се
састоје из налаза објављених у литератури или на Интернету, заједно
са претходно необјављеним дистрибуционим подацима сакупљеним
на терену. Од две врсте комплекса присутне у Србији, Anguis fragilis је распрострањен у западним и јужним крајевима наше земље док је
Anguis colchica присутан у североисточним и источним крајевима. У
најсевернијим деловима наше земље констатовано је одсуство обе
врсте, због недостатка одговарајућег станишта. Налази су бројнији у
планинско-котлинском региону и ређи и раштрканији у перипанон-
ском и панонском региону, што се делимично може објаснити
несистематским узорковањем. Локација и ширина контактне зоне две
врсте слепића у Србији је још увек недовољно позната. Претпоставља
се да се пружа дуж долине Велике Мораве ка југу а затим прати
границу између Родопског и Карпатско-Балканског планинског маси-
ва ка југо-истоку, али постоје индиције да се хибридна зона налази и
западније. Постоји извесно неслагање, у литератури, између контактне
зоне предложене на основу морфолошких анализа и оне предложене
на основу молекуларних анализа. Ово указује на потребу за опсежни-
јим узорковањем и даљим анализама. Коначно, пошто раздвајање две
криптичке врсте слепића до сада није препознато у нашој номенкла-
тури, у овом раду предлажемо званичне српске називе за наведене
врсте. Врста Anguis fragilis ће задржати стандардно српско име
„Слепић“, док за врсту Anguis colchica предлажемо име „Источни
слепић“.
PB  - Belgrade: Natural History Museum
T2  - Bulletin of the Natural History Museum
T1  - Distribution of the slow worm (Anguis fragilis complex) with possible species delimitation in Serbia
T1  - Дистрибуција слепића (Anguis fragilis complex) у Србији, са могућим разграничењем врста
VL  - 13
DO  - 10.5937/bnhmb2013253U
SP  - 253
EP  - 265
ER  - 

@article{
author = "Urošević, Aleksandar and Tomović, Ljiljana and Crnobrnja-Isailović, Jelka and Krizmanić, Imre and Ajtić, Rastko and Labus, Nenad and Anđelković, Marko and Nikolić, Sonja and Jović, Danko and Krstić, Milivoj and Maričić, Marko and Simović, Aleksandar and Paunović, Ana and Žikić, Vladimir and Ćorović, Jelena and Vučić, Tijana and Čubrić, Tijana and Džukić, Georg",
year = "2020",
abstract = "In this study, we present an updated distribution data of Anguis fragilis
complex species in Serbia. The dataset consists of literature and Internet records,
coupled with previously unpublished distribution data gathered in the field. Of the two species of the complex, Anguis fragilis is present in the western and southern
parts of the country while Anguis colchica is present in the northeastern and
eastern parts of the country. There is an absence of both species in the
northernmost parts of the country, due to the lack of adequate habitat. The field
records tend to be more abundant in the Mountain-valley altitudinal region, and
scarcer and more scattered in the Peripannonian and Pannonian altitudinal regions,
which can partly be attributed to the sampling bias. The location and width of the
contact zone are still poorly known. It’s hypothesized to follow the Velika Morava
river valley to the south and then the boundary between the Carpathian-Balkan and
Rhodope mountain ranges in the southeast, but the hybrid zone could be situated
more to the west. There is a certain discrepancy, in the literature, between the
contact zone proposed by morphological data, and the one proposed by molecular
sampling. That stresses the need for thorough sampling in the region and further
analyses. Finally, since the taxonomic split between the cryptic slow worm taxa
was not yet recognized in our national nomenclature, this paper also presents the
official Serbian names for the two species. The species Anguis fragilis will keep
the standard Serbian name “Slepić”, while for the species Anguis colchica we
propose the name “Istočni slepić”., У овом раду, приказујемо ажуриране податке о дистрибуцији
комплекса врста слепића (Anguis fragilis complex) у Србији. Подаци се
састоје из налаза објављених у литератури или на Интернету, заједно
са претходно необјављеним дистрибуционим подацима сакупљеним
на терену. Од две врсте комплекса присутне у Србији, Anguis fragilis је распрострањен у западним и јужним крајевима наше земље док је
Anguis colchica присутан у североисточним и источним крајевима. У
најсевернијим деловима наше земље констатовано је одсуство обе
врсте, због недостатка одговарајућег станишта. Налази су бројнији у
планинско-котлинском региону и ређи и раштрканији у перипанон-
ском и панонском региону, што се делимично може објаснити
несистематским узорковањем. Локација и ширина контактне зоне две
врсте слепића у Србији је још увек недовољно позната. Претпоставља
се да се пружа дуж долине Велике Мораве ка југу а затим прати
границу између Родопског и Карпатско-Балканског планинског маси-
ва ка југо-истоку, али постоје индиције да се хибридна зона налази и
западније. Постоји извесно неслагање, у литератури, између контактне
зоне предложене на основу морфолошких анализа и оне предложене
на основу молекуларних анализа. Ово указује на потребу за опсежни-
јим узорковањем и даљим анализама. Коначно, пошто раздвајање две
криптичке врсте слепића до сада није препознато у нашој номенкла-
тури, у овом раду предлажемо званичне српске називе за наведене
врсте. Врста Anguis fragilis ће задржати стандардно српско име
„Слепић“, док за врсту Anguis colchica предлажемо име „Источни
слепић“.",
publisher = "Belgrade: Natural History Museum",
journal = "Bulletin of the Natural History Museum",
title = "Distribution of the slow worm (Anguis fragilis complex) with possible species delimitation in Serbia, Дистрибуција слепића (Anguis fragilis complex) у Србији, са могућим разграничењем врста",
volume = "13",
doi = "10.5937/bnhmb2013253U",
pages = "253-265"
}

Urošević, A., Tomović, L., Crnobrnja-Isailović, J., Krizmanić, I., Ajtić, R., Labus, N., Anđelković, M., Nikolić, S., Jović, D., Krstić, M., Maričić, M., Simović, A., Paunović, A., Žikić, V., Ćorović, J., Vučić, T., Čubrić, T.,& Džukić, G.. (2020). Distribution of the slow worm (Anguis fragilis complex) with possible species delimitation in Serbia. in Bulletin of the Natural History Museum
Belgrade: Natural History Museum., 13, 253-265.
https://doi.org/10.5937/bnhmb2013253U

Urošević A, Tomović L, Crnobrnja-Isailović J, Krizmanić I, Ajtić R, Labus N, Anđelković M, Nikolić S, Jović D, Krstić M, Maričić M, Simović A, Paunović A, Žikić V, Ćorović J, Vučić T, Čubrić T, Džukić G. Distribution of the slow worm (Anguis fragilis complex) with possible species delimitation in Serbia. in Bulletin of the Natural History Museum. 2020;13:253-265.
doi:10.5937/bnhmb2013253U .

Urošević, Aleksandar, Tomović, Ljiljana, Crnobrnja-Isailović, Jelka, Krizmanić, Imre, Ajtić, Rastko, Labus, Nenad, Anđelković, Marko, Nikolić, Sonja, Jović, Danko, Krstić, Milivoj, Maričić, Marko, Simović, Aleksandar, Paunović, Ana, Žikić, Vladimir, Ćorović, Jelena, Vučić, Tijana, Čubrić, Tijana, Džukić, Georg, "Distribution of the slow worm (Anguis fragilis complex) with possible species delimitation in Serbia" in Bulletin of the Natural History Museum, 13 (2020):253-265,
https://doi.org/10.5937/bnhmb2013253U . .

TY  - JOUR
AU  - Vučić, Tijana
AU  - Ivanović, Ana
AU  - Nikolić, Sonja
AU  - Jovanović, Jovana
AU  - Cvijanović, Milena
PY  - 2020
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0354-46642000026V
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/4036
UR  - http://www.serbiosoc.org.rs/arch/index.php/abs/article/view/5220
AB  - During three consecutive years, we compared the reproductive characteristics and oviposition dynamics of two crested newt species, Triturus ivanbureschi and T. macedonicus. These two well-defined species are of special interest because of complex interactions at their contact zone, which include hybridization, species replacement and asymmetric mitochondrial DNA introgression. In common garden experiments, females were introduced to conspecific males, to males of other species and to hybrid males. We monitored the total number and size of the deposited eggs, as well as the dynamics and duration of oviposition during three consecutive years. The number of deposited eggs of Triturus species was much higher than previously reported. Triturus macedonicus lay more eggs that were of larger size in comparison to T. ivanbureschi. Also, the onset of T. macedonicus oviposition was considerably delayed compared to T. ivanbureschi. These are fundamental data, important for understanding complex species interactions in their contact zones.
PB  - Serbian Biological Society
T2  - Archives of Biological Sciences
T1  - Reproductive characteristics of two Triturus species (Amphibia: Caudata)
IS  - 3
VL  - 72
DO  - 10.2298/ABS200328026V
SP  - 321
EP  - 328
ER  - 

@article{
author = "Vučić, Tijana and Ivanović, Ana and Nikolić, Sonja and Jovanović, Jovana and Cvijanović, Milena",
year = "2020",
abstract = "During three consecutive years, we compared the reproductive characteristics and oviposition dynamics of two crested newt species, Triturus ivanbureschi and T. macedonicus. These two well-defined species are of special interest because of complex interactions at their contact zone, which include hybridization, species replacement and asymmetric mitochondrial DNA introgression. In common garden experiments, females were introduced to conspecific males, to males of other species and to hybrid males. We monitored the total number and size of the deposited eggs, as well as the dynamics and duration of oviposition during three consecutive years. The number of deposited eggs of Triturus species was much higher than previously reported. Triturus macedonicus lay more eggs that were of larger size in comparison to T. ivanbureschi. Also, the onset of T. macedonicus oviposition was considerably delayed compared to T. ivanbureschi. These are fundamental data, important for understanding complex species interactions in their contact zones.",
publisher = "Serbian Biological Society",
journal = "Archives of Biological Sciences",
title = "Reproductive characteristics of two Triturus species (Amphibia: Caudata)",
number = "3",
volume = "72",
doi = "10.2298/ABS200328026V",
pages = "321-328"
}

Vučić, T., Ivanović, A., Nikolić, S., Jovanović, J.,& Cvijanović, M.. (2020). Reproductive characteristics of two Triturus species (Amphibia: Caudata). in Archives of Biological Sciences
Serbian Biological Society., 72(3), 321-328.
https://doi.org/10.2298/ABS200328026V

Vučić T, Ivanović A, Nikolić S, Jovanović J, Cvijanović M. Reproductive characteristics of two Triturus species (Amphibia: Caudata). in Archives of Biological Sciences. 2020;72(3):321-328.
doi:10.2298/ABS200328026V .

Vučić, Tijana, Ivanović, Ana, Nikolić, Sonja, Jovanović, Jovana, Cvijanović, Milena, "Reproductive characteristics of two Triturus species (Amphibia: Caudata)" in Archives of Biological Sciences, 72, no. 3 (2020):321-328,
https://doi.org/10.2298/ABS200328026V . .

TY  - CONF
AU  - Tomović, Ljiljana
AU  - Arsovski, Dragan
AU  - Golubović, Ana
AU  - Nikolić, Sonja
AU  - Anđelković, Marko
AU  - Sterijovski, Bogoljub
AU  - Ajtić, Rastko
AU  - Crnobrnja-Isailović, Jelka
AU  - Bonnet, Xavier
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5215
AB  - The nose-horned viper (Vipera ammodytes) is the least studied species of European true vipers, regarding its population ecology and reproductive biology. We rаn capture-recapture (CR) studies on this species during 12 years (2007-2018) on Golem Grad Island (Prespa Lake, North Macedonia). We captured 501 vipers (304 adults, 161 subadults, 36 newborns) and recaptured 240 individuals enabling us to estimate demographic traits. Females larger than 35.0 cm of snout-vent-length [SVL] (the smallest undoubtedly gravid female) and males larger than 37.0 cm SVL (the smallest male observed while mating) were considered adults. The largest captured individual was 66 cm long, indicating insular dwarfism. Fecundity data were gathered in the field (palpation) and from females collected for controlled parturition in order to obtain size at birth and define newborn size (up to 18.0 cm SVL). Intermediate sized snakes were considered subadults. Modelling of subadult and adult CR data implied sexand age-specific capture probabilities (females and subadults being on the lower end); mean annual survival probabilities were in favour of the females (78% vs. 71%). Total population size was estimated at 2345 (s=293.9) individuals, indicating the highest reported density for this species (130 ind/ha, s=16.4). Adult sex-ratio was 1,4 (male/female) and the proportion of reproductive females ranged from 44% to 74%, suggesting a biennial cycle. Litter size varied from two to nine (average 4.5); this is particularly low for this species. Diet changed with ontogeny – juveniles fed mainly on Scolopendra cingulata and lizards, while adults mainly preyed on lizards and dice snakes.
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  - Population characteristics of the nose-horned viper (Vipera ammodytes) on Golem Grad island (North Macedonia)
SP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5215
ER  - 

@conference{
author = "Tomović, Ljiljana and Arsovski, Dragan and Golubović, Ana and Nikolić, Sonja and Anđelković, Marko and Sterijovski, Bogoljub and Ajtić, Rastko and Crnobrnja-Isailović, Jelka and Bonnet, Xavier",
year = "2019",
abstract = "The nose-horned viper (Vipera ammodytes) is the least studied species of European true vipers, regarding its population ecology and reproductive biology. We rаn capture-recapture (CR) studies on this species during 12 years (2007-2018) on Golem Grad Island (Prespa Lake, North Macedonia). We captured 501 vipers (304 adults, 161 subadults, 36 newborns) and recaptured 240 individuals enabling us to estimate demographic traits. Females larger than 35.0 cm of snout-vent-length [SVL] (the smallest undoubtedly gravid female) and males larger than 37.0 cm SVL (the smallest male observed while mating) were considered adults. The largest captured individual was 66 cm long, indicating insular dwarfism. Fecundity data were gathered in the field (palpation) and from females collected for controlled parturition in order to obtain size at birth and define newborn size (up to 18.0 cm SVL). Intermediate sized snakes were considered subadults. Modelling of subadult and adult CR data implied sexand age-specific capture probabilities (females and subadults being on the lower end); mean annual survival probabilities were in favour of the females (78% vs. 71%). Total population size was estimated at 2345 (s=293.9) individuals, indicating the highest reported density for this species (130 ind/ha, s=16.4). Adult sex-ratio was 1,4 (male/female) and the proportion of reproductive females ranged from 44% to 74%, suggesting a biennial cycle. Litter size varied from two to nine (average 4.5); this is particularly low for this species. Diet changed with ontogeny – juveniles fed mainly on Scolopendra cingulata and lizards, while adults mainly preyed on lizards and dice snakes.",
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 = "Population characteristics of the nose-horned viper (Vipera ammodytes) on Golem Grad island (North Macedonia)",
pages = "86",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5215"
}

Tomović, L., Arsovski, D., Golubović, A., Nikolić, S., Anđelković, M., Sterijovski, B., Ajtić, R., Crnobrnja-Isailović, J.,& Bonnet, X.. (2019). Population characteristics of the nose-horned viper (Vipera ammodytes) on Golem Grad island (North Macedonia). 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., 86.
https://hdl.handle.net/21.15107/rcub_ibiss_5215

Tomović L, Arsovski D, Golubović A, Nikolić S, Anđelković M, Sterijovski B, Ajtić R, Crnobrnja-Isailović J, Bonnet X. Population characteristics of the nose-horned viper (Vipera ammodytes) on Golem Grad island (North Macedonia). in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy. 2019;:86.
https://hdl.handle.net/21.15107/rcub_ibiss_5215 .

Tomović, Ljiljana, Arsovski, Dragan, Golubović, Ana, Nikolić, Sonja, Anđelković, Marko, Sterijovski, Bogoljub, Ajtić, Rastko, Crnobrnja-Isailović, Jelka, Bonnet, Xavier, "Population characteristics of the nose-horned viper (Vipera ammodytes) on Golem Grad island (North Macedonia)" in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy (2019):86,
https://hdl.handle.net/21.15107/rcub_ibiss_5215 .

TY  - CONF
AU  - Vučić, Tijana
AU  - Nikolić, Sonja
AU  - Jovanović, Jovana
AU  - Ivanović, Ana
AU  - Cvijanović, Milena
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5589
AB  - We explored some of the life history traits of Triturus ivanbureschi and T. macedonicus. These two species
hybridize and form a large introgressive zone in central Balkan Peninsula which follows the specific species
displacement scenario: Triturus macedonicus widens its range and transects the range of T. ivanbureschi. One of
the important questions is whether, in the hybrid zone, one species has advantage over the other in reproduction
or survival. During three consecutive years, we compared reproductive potentials of the two species in common
garden experiments. The females of both species were introduced both to conspecific males and males of the other
species. We monitored their reproductive success: proportions of egg-laying females, the total number of deposited
eggs, and dynamics and duration of oviposition. Our results indicate that fecundity is largely influenced by
environmental factors as well as females’ affinities towards males, but specific differences in reproductive
potential between the species were not found.
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  - Reproductive potentials of two Triturus species from their hybrid zone
SP  - 303
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5589
ER  - 

@conference{
author = "Vučić, Tijana and Nikolić, Sonja and Jovanović, Jovana and Ivanović, Ana and Cvijanović, Milena",
year = "2019",
abstract = "We explored some of the life history traits of Triturus ivanbureschi and T. macedonicus. These two species
hybridize and form a large introgressive zone in central Balkan Peninsula which follows the specific species
displacement scenario: Triturus macedonicus widens its range and transects the range of T. ivanbureschi. One of
the important questions is whether, in the hybrid zone, one species has advantage over the other in reproduction
or survival. During three consecutive years, we compared reproductive potentials of the two species in common
garden experiments. The females of both species were introduced both to conspecific males and males of the other
species. We monitored their reproductive success: proportions of egg-laying females, the total number of deposited
eggs, and dynamics and duration of oviposition. Our results indicate that fecundity is largely influenced by
environmental factors as well as females’ affinities towards males, but specific differences in reproductive
potential between the species were not found.",
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 = "Reproductive potentials of two Triturus species from their hybrid zone",
pages = "303",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5589"
}

Vučić, T., Nikolić, S., Jovanović, J., Ivanović, A.,& Cvijanović, M.. (2019). Reproductive potentials of two Triturus species from their 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., 303.
https://hdl.handle.net/21.15107/rcub_ibiss_5589

Vučić T, Nikolić S, Jovanović J, Ivanović A, Cvijanović M. Reproductive potentials of two Triturus species from their hybrid zone. in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy. 2019;:303.
https://hdl.handle.net/21.15107/rcub_ibiss_5589 .

Vučić, Tijana, Nikolić, Sonja, Jovanović, Jovana, Ivanović, Ana, Cvijanović, Milena, "Reproductive potentials of two Triturus species from their hybrid zone" in XX European Congress of Herpetology. Program & Abstracts; 2019 Sep 2-6; Milan, Italy (2019):303,
https://hdl.handle.net/21.15107/rcub_ibiss_5589 .

TY  - JOUR
AU  - Golubović, Ana
AU  - Tomović, Ljiljana
AU  - Nikolić, Marko
AU  - Nikolić, Sonja
AU  - Anđelković, Marko
AU  - Arsovski, Dragan
AU  - Iković, Vuk
AU  - Gvozdenović, Slađana
AU  - Popović, Miloš
PY  - 2019
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0354-46641900034G
UR  - http://www.serbiosoc.org.rs/arch/index.php/abs/article/view/4163
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3566
AB  - Hermann’s tortoise (Testudo hermanni) is among the conservation priorities in the European Union. Consequently, it is included in Annexes II and IV of the EU Habitats Directive, Annex II of the Bern Convention, and Annex II of the CITES Convention. Hermann’s tortoise conservation programs compile insights on the threats affecting population viability, along with factors shaping the species’ distribution. Serbian populations of the eastern subspecies (Testudo hermanni boettgeri) seem numerous and therefore prosperous, but recent population viability analyses revealed that they are susceptible to rapid demographic changes and/or habitat destruction. This implies the need for effective population monitoring and protection, as well as mapping and preservation of suitable habitats. In this paper we summarized current knowledge about the geographic distribution of Hermann’s tortoise in Serbia and modeled its ecological niche. Our results corroborate and uphold the known species’ distribution in Serbia. Most suitable habitats are situated in the lowland areas of eastern, central and southern Serbia, under semi-open habitats, such as pastures and shrubs, broadleaf forests, and all successional stages in between. The results provided in this paper should be considered in the selection and shaping of NATURA 2000 sites in Serbia.
T2  - Archives of Biological Sciences
T1  - Distribution of Hermann’s tortoise across Serbia with implications for conservation
IS  - 3
VL  - 71
DO  - 10.2298/ABS190406034G
SP  - 509
EP  - 516
ER  - 

@article{
author = "Golubović, Ana and Tomović, Ljiljana and Nikolić, Marko and Nikolić, Sonja and Anđelković, Marko and Arsovski, Dragan and Iković, Vuk and Gvozdenović, Slađana and Popović, Miloš",
year = "2019",
abstract = "Hermann’s tortoise (Testudo hermanni) is among the conservation priorities in the European Union. Consequently, it is included in Annexes II and IV of the EU Habitats Directive, Annex II of the Bern Convention, and Annex II of the CITES Convention. Hermann’s tortoise conservation programs compile insights on the threats affecting population viability, along with factors shaping the species’ distribution. Serbian populations of the eastern subspecies (Testudo hermanni boettgeri) seem numerous and therefore prosperous, but recent population viability analyses revealed that they are susceptible to rapid demographic changes and/or habitat destruction. This implies the need for effective population monitoring and protection, as well as mapping and preservation of suitable habitats. In this paper we summarized current knowledge about the geographic distribution of Hermann’s tortoise in Serbia and modeled its ecological niche. Our results corroborate and uphold the known species’ distribution in Serbia. Most suitable habitats are situated in the lowland areas of eastern, central and southern Serbia, under semi-open habitats, such as pastures and shrubs, broadleaf forests, and all successional stages in between. The results provided in this paper should be considered in the selection and shaping of NATURA 2000 sites in Serbia.",
journal = "Archives of Biological Sciences",
title = "Distribution of Hermann’s tortoise across Serbia with implications for conservation",
number = "3",
volume = "71",
doi = "10.2298/ABS190406034G",
pages = "509-516"
}

Golubović, A., Tomović, L., Nikolić, M., Nikolić, S., Anđelković, M., Arsovski, D., Iković, V., Gvozdenović, S.,& Popović, M.. (2019). Distribution of Hermann’s tortoise across Serbia with implications for conservation. in Archives of Biological Sciences, 71(3), 509-516.
https://doi.org/10.2298/ABS190406034G

Golubović A, Tomović L, Nikolić M, Nikolić S, Anđelković M, Arsovski D, Iković V, Gvozdenović S, Popović M. Distribution of Hermann’s tortoise across Serbia with implications for conservation. in Archives of Biological Sciences. 2019;71(3):509-516.
doi:10.2298/ABS190406034G .

Golubović, Ana, Tomović, Ljiljana, Nikolić, Marko, Nikolić, Sonja, Anđelković, Marko, Arsovski, Dragan, Iković, Vuk, Gvozdenović, Slađana, Popović, Miloš, "Distribution of Hermann’s tortoise across Serbia with implications for conservation" in Archives of Biological Sciences, 71, no. 3 (2019):509-516,
https://doi.org/10.2298/ABS190406034G . .

TY  - JOUR
AU  - Džukić, Georg
AU  - Tomović, Ljiljana M
AU  - Anđelković, Marko
AU  - Urošević, Aleksandar
AU  - Nikolić, Sonja
AU  - Kalezić, Miloš
PY  - 2017
UR  - https://scindeks-clanci.ceon.rs/data/pdf/1820-9521/2017/1820-95211710057D.pdf
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3468
AB  - Ovaj rad predstavlja popis vrsta gmizavaca deponovanih u herpetološkoj zbirci Instituta za Biološka Istraživanja 'Siniša Stanković', Univerziteta u Beogradu. Zbirka se sastoji od 8213 primeraka 65 vrsta gmizavaca sakupljenih iz 23 zemlje. Najveći deo zbirke sadrži materijal sa teritorije bivše Jugoslavije. Vrste zastupljene u zbirci klasifikovane su u okviru 19 porodica (tri u okviru Testudines, osam u okviru Lacertilia i osam u okviru Serpentes). Po broju primeraka, najzastupljenije su porodice Lacertidae (6043 - 73,6 %), Colubridae (612 - 7,5 %) i Viperidae (530 - 6,5 %), dok su porodice Cheloniidae, Chamaeleonidae, Phrynosomatidae, Erycidae i Elapidae zastupljene sa po jednim ili dva primerka. Primerci svih vrsta gmizavaca koji žive u Srbiji postoje u zbirci, kao i većina vrsta karakterističnih za Balkansko poluostrvo. Specifičan značaj zbirke ogleda se u velikim populacionim uzorcima nekoliko vrsta. Osim istorijskog značaja, posebna vrednost herpetološke zbirke ogleda se u tome što deponovan materijal omogućava studije sistematike, distribucije, ekologije, morfologije, konzervacione biologije kao i različitih evolucionih i biogeografskih fenomena (npr. endemizma, intraspecijskog diverziteta, hibridizacije taksona, itd).
PB  - Belgrade: Natural History Museum
T2  - Bulletin of the Natural History Museum
T1  - The herpetological collection of the Institute for biological research “Siniša Stanković”, University of Belgrade
VL  - 10
DO  - 10.5937/bnhmb1710057D
SP  - 57
EP  - 104
ER  - 

@article{
author = "Džukić, Georg and Tomović, Ljiljana M and Anđelković, Marko and Urošević, Aleksandar and Nikolić, Sonja and Kalezić, Miloš",
year = "2017",
abstract = "Ovaj rad predstavlja popis vrsta gmizavaca deponovanih u herpetološkoj zbirci Instituta za Biološka Istraživanja 'Siniša Stanković', Univerziteta u Beogradu. Zbirka se sastoji od 8213 primeraka 65 vrsta gmizavaca sakupljenih iz 23 zemlje. Najveći deo zbirke sadrži materijal sa teritorije bivše Jugoslavije. Vrste zastupljene u zbirci klasifikovane su u okviru 19 porodica (tri u okviru Testudines, osam u okviru Lacertilia i osam u okviru Serpentes). Po broju primeraka, najzastupljenije su porodice Lacertidae (6043 - 73,6 %), Colubridae (612 - 7,5 %) i Viperidae (530 - 6,5 %), dok su porodice Cheloniidae, Chamaeleonidae, Phrynosomatidae, Erycidae i Elapidae zastupljene sa po jednim ili dva primerka. Primerci svih vrsta gmizavaca koji žive u Srbiji postoje u zbirci, kao i većina vrsta karakterističnih za Balkansko poluostrvo. Specifičan značaj zbirke ogleda se u velikim populacionim uzorcima nekoliko vrsta. Osim istorijskog značaja, posebna vrednost herpetološke zbirke ogleda se u tome što deponovan materijal omogućava studije sistematike, distribucije, ekologije, morfologije, konzervacione biologije kao i različitih evolucionih i biogeografskih fenomena (npr. endemizma, intraspecijskog diverziteta, hibridizacije taksona, itd).",
publisher = "Belgrade: Natural History Museum",
journal = "Bulletin of the Natural History Museum",
title = "The herpetological collection of the Institute for biological research “Siniša Stanković”, University of Belgrade",
volume = "10",
doi = "10.5937/bnhmb1710057D",
pages = "57-104"
}

Džukić, G., Tomović, L. M., Anđelković, M., Urošević, A., Nikolić, S.,& Kalezić, M.. (2017). The herpetological collection of the Institute for biological research “Siniša Stanković”, University of Belgrade. in Bulletin of the Natural History Museum
Belgrade: Natural History Museum., 10, 57-104.
https://doi.org/10.5937/bnhmb1710057D

Džukić G, Tomović LM, Anđelković M, Urošević A, Nikolić S, Kalezić M. The herpetological collection of the Institute for biological research “Siniša Stanković”, University of Belgrade. in Bulletin of the Natural History Museum. 2017;10:57-104.
doi:10.5937/bnhmb1710057D .

Džukić, Georg, Tomović, Ljiljana M, Anđelković, Marko, Urošević, Aleksandar, Nikolić, Sonja, Kalezić, Miloš, "The herpetological collection of the Institute for biological research “Siniša Stanković”, University of Belgrade" in Bulletin of the Natural History Museum, 10 (2017):57-104,
https://doi.org/10.5937/bnhmb1710057D . .