TY  - JOUR
AU  - Vörös, Judit
AU  - Ursenbacher, Sylvain
AU  - Jelić, Dušan
AU  - Tomović, Ljiljana
AU  - Crnobrnja-Isailović, Jelka
AU  - Ajtić, Rastko
AU  - Sterijovski, Bogoljub
AU  - Zinenko, Oleksandr
AU  - Ghira, Ioan
AU  - Strugariu, Alexandru
AU  - Zamfirescu, Stefan
AU  - Nagy, Zoltán Tamás
AU  - Péchy, Tamás
AU  - Krízsik, Virág
AU  - Márton, Orsolya
AU  - Halpern, Bálint
PY  - 2022
UR  - https://brill.com/view/journals/amre/43/4/article-p407_8.xml
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5340
AB  - The Meadow and Steppe viper, Vipera ursinii-renardi complex is a well-studied group that is divided into several morphological subspecies. In this study, we combine the analyses of two mitochondrial genes with 9 microsatellite markers to compare both phylogenetic signals. Whereas the signal is similar between both genomes within most subspecies, the relative relationships between subspecies are more differentiated. Moreover, the nuclear phylogenetic reconstruction supports genetic homogeneity within V. u. macrops (in contrast to mtDNA). Both genetic portions show an unexpected differentiation between a population from Bistra Mountain and other V. u. macrops populations. Globally, the microsatellite markers suggest high genetic diversity in most subspecies, even in V. u. rakosiensis which is highly threatened; only V. u. macrops showed a limited genetic diversity. Within lowland subspecies, the differentiation between populations is globally limited compared to the distance between them (except in some populations of V. u. moldavica ). The limited differentiation might be the consequence of a recent isolation (few decades) of previously large populations. Nevertheless, the only way to maintain this genetic diversity and to avoid an increase in genetic differentiation between populations in the future is to recreate suitable habitats and reconnect the populations.
PB  - Brill Academic Publishers
T2  - Amphibia-Reptilia
T1  - Well-known species, unexpected results: high genetic diversity in declining Vipera ursinii in central, eastern and southeastern Europe
IS  - 4
VL  - 43
DO  - 10.1163/15685381-bja10116
SP  - 407
EP  - 423
ER  - 

@article{
author = "Vörös, Judit and Ursenbacher, Sylvain and Jelić, Dušan and Tomović, Ljiljana and Crnobrnja-Isailović, Jelka and Ajtić, Rastko and Sterijovski, Bogoljub and Zinenko, Oleksandr and Ghira, Ioan and Strugariu, Alexandru and Zamfirescu, Stefan and Nagy, Zoltán Tamás and Péchy, Tamás and Krízsik, Virág and Márton, Orsolya and Halpern, Bálint",
year = "2022",
abstract = "The Meadow and Steppe viper, Vipera ursinii-renardi complex is a well-studied group that is divided into several morphological subspecies. In this study, we combine the analyses of two mitochondrial genes with 9 microsatellite markers to compare both phylogenetic signals. Whereas the signal is similar between both genomes within most subspecies, the relative relationships between subspecies are more differentiated. Moreover, the nuclear phylogenetic reconstruction supports genetic homogeneity within V. u. macrops (in contrast to mtDNA). Both genetic portions show an unexpected differentiation between a population from Bistra Mountain and other V. u. macrops populations. Globally, the microsatellite markers suggest high genetic diversity in most subspecies, even in V. u. rakosiensis which is highly threatened; only V. u. macrops showed a limited genetic diversity. Within lowland subspecies, the differentiation between populations is globally limited compared to the distance between them (except in some populations of V. u. moldavica ). The limited differentiation might be the consequence of a recent isolation (few decades) of previously large populations. Nevertheless, the only way to maintain this genetic diversity and to avoid an increase in genetic differentiation between populations in the future is to recreate suitable habitats and reconnect the populations.",
publisher = "Brill Academic Publishers",
journal = "Amphibia-Reptilia",
title = "Well-known species, unexpected results: high genetic diversity in declining Vipera ursinii in central, eastern and southeastern Europe",
number = "4",
volume = "43",
doi = "10.1163/15685381-bja10116",
pages = "407-423"
}

Vörös, J., Ursenbacher, S., Jelić, D., Tomović, L., Crnobrnja-Isailović, J., Ajtić, R., Sterijovski, B., Zinenko, O., Ghira, I., Strugariu, A., Zamfirescu, S., Nagy, Z. T., Péchy, T., Krízsik, V., Márton, O.,& Halpern, B.. (2022). Well-known species, unexpected results: high genetic diversity in declining Vipera ursinii in central, eastern and southeastern Europe. in Amphibia-Reptilia
Brill Academic Publishers., 43(4), 407-423.
https://doi.org/10.1163/15685381-bja10116

Vörös J, Ursenbacher S, Jelić D, Tomović L, Crnobrnja-Isailović J, Ajtić R, Sterijovski B, Zinenko O, Ghira I, Strugariu A, Zamfirescu S, Nagy ZT, Péchy T, Krízsik V, Márton O, Halpern B. Well-known species, unexpected results: high genetic diversity in declining Vipera ursinii in central, eastern and southeastern Europe. in Amphibia-Reptilia. 2022;43(4):407-423.
doi:10.1163/15685381-bja10116 .

Vörös, Judit, Ursenbacher, Sylvain, Jelić, Dušan, Tomović, Ljiljana, Crnobrnja-Isailović, Jelka, Ajtić, Rastko, Sterijovski, Bogoljub, Zinenko, Oleksandr, Ghira, Ioan, Strugariu, Alexandru, Zamfirescu, Stefan, Nagy, Zoltán Tamás, Péchy, Tamás, Krízsik, Virág, Márton, Orsolya, Halpern, Bálint, "Well-known species, unexpected results: high genetic diversity in declining Vipera ursinii in central, eastern and southeastern Europe" in Amphibia-Reptilia, 43, no. 4 (2022):407-423,
https://doi.org/10.1163/15685381-bja10116 . .

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  - CONF
AU  - Bjelica, Vukašin
AU  - Maričić, Marko
AU  - Anđelković, Marko
AU  - Golubović, Ana
AU  - Ajtić, Rastko
AU  - Sterijovski, Bogoljub
AU  - Arsovski, Dragan
AU  - Tomović, Ljiljana
AU  - Bonnet, Xavier
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5278
AB  - Golem Grad island, better known as “Snake Island” due to the large population of dice snakes
(Natrix tessellata) is a strictly protected area within National Park Galičica (North Macedonia). From
2008, the snakes’ tale started slowly unravelling, thanks to the start of mark-recapture monitoring.
More than 6.000 snakes were marked during >15 years. Opportunistic dissections provided information
about fecundity and body condition. Three distinct colour morphs coexist: ‘green back with dark spots’
is the most common, but uniformly green and melanistic individuals are not rare either. Furthermore,
this population exhibits gigantism, possibly due to the abundance of food: the largest island male
and female measured 113cm and 129cm, respectively, in contrast to maximal body sizes from other
populations reported in literature: 95cm and 122.5cm. Worryingly, this island population faces serious
threats, especially fish poaching. Hundreds of snakes meet their untimely fate tangled and ultimately
drowned in fishing nets, or even persecuted, while small individuals are crushed by the rocks they hide
under by wandering tourists. Despite continuous conservation efforts, this snake population is rapidly
declining, particularly since 2011 when poaching pressure increased. More recently, additional dice
snake population surveys were launched in Prespa, in Konjsko village (MK) and on Mal Grad Island (AL).
The conservation status differs among the three localities. According to IUCN Red Lists, the dice snake
is considered as Near Threatened (NT) in North Macedonia, while in Albania it is still classified as Not
Evaluated (NE; however in the new, updated list of 2019 (still unpublished) is has been evaluated as
Least Concern (LC)). We plan to use genetics and recapture analyses to assess the genetic structure and
the degree of (possible) connectivity among sites. This information will be especially useful in order to
understand how viable Prespa Lake’s dice snake population(s) are, despite the various pressures they
face. Efficient conservation actions rely on such insight, while a species conservation action plan at the
transboundary level is required.
PB  - Skopje: Macedonian Ecological Society
C3  - Abstract book: 6th Congress of Ecologists of the Republic of North Macedonia, with International Participation; 2022 Oct 15-18; Ohrid, North Macedonia
T1  - A twist of fate: Conservation of Lake Prespa’s iconic snakes
SP  - 159
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5278
ER  - 

@conference{
author = "Bjelica, Vukašin and Maričić, Marko and Anđelković, Marko and Golubović, Ana and Ajtić, Rastko and Sterijovski, Bogoljub and Arsovski, Dragan and Tomović, Ljiljana and Bonnet, Xavier",
year = "2022",
abstract = "Golem Grad island, better known as “Snake Island” due to the large population of dice snakes
(Natrix tessellata) is a strictly protected area within National Park Galičica (North Macedonia). From
2008, the snakes’ tale started slowly unravelling, thanks to the start of mark-recapture monitoring.
More than 6.000 snakes were marked during >15 years. Opportunistic dissections provided information
about fecundity and body condition. Three distinct colour morphs coexist: ‘green back with dark spots’
is the most common, but uniformly green and melanistic individuals are not rare either. Furthermore,
this population exhibits gigantism, possibly due to the abundance of food: the largest island male
and female measured 113cm and 129cm, respectively, in contrast to maximal body sizes from other
populations reported in literature: 95cm and 122.5cm. Worryingly, this island population faces serious
threats, especially fish poaching. Hundreds of snakes meet their untimely fate tangled and ultimately
drowned in fishing nets, or even persecuted, while small individuals are crushed by the rocks they hide
under by wandering tourists. Despite continuous conservation efforts, this snake population is rapidly
declining, particularly since 2011 when poaching pressure increased. More recently, additional dice
snake population surveys were launched in Prespa, in Konjsko village (MK) and on Mal Grad Island (AL).
The conservation status differs among the three localities. According to IUCN Red Lists, the dice snake
is considered as Near Threatened (NT) in North Macedonia, while in Albania it is still classified as Not
Evaluated (NE; however in the new, updated list of 2019 (still unpublished) is has been evaluated as
Least Concern (LC)). We plan to use genetics and recapture analyses to assess the genetic structure and
the degree of (possible) connectivity among sites. This information will be especially useful in order to
understand how viable Prespa Lake’s dice snake population(s) are, despite the various pressures they
face. Efficient conservation actions rely on such insight, while a species conservation action plan at the
transboundary level is required.",
publisher = "Skopje: Macedonian Ecological Society",
journal = "Abstract book: 6th Congress of Ecologists of the Republic of North Macedonia, with International Participation; 2022 Oct 15-18; Ohrid, North Macedonia",
title = "A twist of fate: Conservation of Lake Prespa’s iconic snakes",
pages = "159",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5278"
}

Bjelica, V., Maričić, M., Anđelković, M., Golubović, A., Ajtić, R., Sterijovski, B., Arsovski, D., Tomović, L.,& Bonnet, X.. (2022). A twist of fate: Conservation of Lake Prespa’s iconic snakes. in Abstract book: 6th Congress of Ecologists of the Republic of North Macedonia, with International Participation; 2022 Oct 15-18; Ohrid, North Macedonia
Skopje: Macedonian Ecological Society., 159.
https://hdl.handle.net/21.15107/rcub_ibiss_5278

Bjelica V, Maričić M, Anđelković M, Golubović A, Ajtić R, Sterijovski B, Arsovski D, Tomović L, Bonnet X. A twist of fate: Conservation of Lake Prespa’s iconic snakes. in Abstract book: 6th Congress of Ecologists of the Republic of North Macedonia, with International Participation; 2022 Oct 15-18; Ohrid, North Macedonia. 2022;:159.
https://hdl.handle.net/21.15107/rcub_ibiss_5278 .

Bjelica, Vukašin, Maričić, Marko, Anđelković, Marko, Golubović, Ana, Ajtić, Rastko, Sterijovski, Bogoljub, Arsovski, Dragan, Tomović, Ljiljana, Bonnet, Xavier, "A twist of fate: Conservation of Lake Prespa’s iconic snakes" in Abstract book: 6th Congress of Ecologists of the Republic of North Macedonia, with International Participation; 2022 Oct 15-18; Ohrid, North Macedonia (2022):159,
https://hdl.handle.net/21.15107/rcub_ibiss_5278 .

TY  - CHAP
AU  - Crnobrnja-Isailović, Jelka
AU  - Adrović, Avdul
AU  - Bego, Ferdinand
AU  - Čađenović, Natalija
AU  - Hadžiahmetović Jurida, Elvira
AU  - Jablonski, Daniel
AU  - Sterijovski, Bogoljub
AU  - Jovanović Glavaš, Olga
PY  - 2022
UR  - https://link.springer.com/10.1007/978-3-030-86478-1_17
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/4693
AB  - In these times of aggressive and enormous anthropogenic alterations of freshwater aquatic habitats throughout the Western Balkans, including drying out, pollution or the introduction of invasive species, the value of small water bodies (SWB) as refugia for local amphibians is clearly increasing. A network of SWB could be crucial for the conservation of local amphibian richness, if this network is properly maintained and monitored. Together, countries of the Western Balkan harbor 29 amphibian species and only one of these species does not use SWB. Almost all those countries share the same challenges—drainage, technical flood protection measures, channelization, planned small dam construction, agriculture, deforestation, pollution, road construction and decrease of aquifers. The conservation of SWB in the region is related to the socio-economic status of the people i.e. to the stimulation of local stakeholders to continue with the traditional practices of agriculture and animal husbandry, including maintenance of SWB, and to their continuous education on importance of SWB for preservation of high values of local biodiversity.
PB  - Springer
PB  - Cham: Springer
T2  - Small Water Bodies of the Western Balkans
T1  - The Importance of Small Water Bodies’ Conservation for Maintaining Local Amphibian Diversity in the Western Balkans
DO  - 10.1007/978-3-030-86478-1_17
SP  - 351
EP  - 387
ER  - 

@inbook{
editor = "Pešić, Vladimir, Milošević, Đurađ, Miliša, Marko",
author = "Crnobrnja-Isailović, Jelka and Adrović, Avdul and Bego, Ferdinand and Čađenović, Natalija and Hadžiahmetović Jurida, Elvira and Jablonski, Daniel and Sterijovski, Bogoljub and Jovanović Glavaš, Olga",
year = "2022",
abstract = "In these times of aggressive and enormous anthropogenic alterations of freshwater aquatic habitats throughout the Western Balkans, including drying out, pollution or the introduction of invasive species, the value of small water bodies (SWB) as refugia for local amphibians is clearly increasing. A network of SWB could be crucial for the conservation of local amphibian richness, if this network is properly maintained and monitored. Together, countries of the Western Balkan harbor 29 amphibian species and only one of these species does not use SWB. Almost all those countries share the same challenges—drainage, technical flood protection measures, channelization, planned small dam construction, agriculture, deforestation, pollution, road construction and decrease of aquifers. The conservation of SWB in the region is related to the socio-economic status of the people i.e. to the stimulation of local stakeholders to continue with the traditional practices of agriculture and animal husbandry, including maintenance of SWB, and to their continuous education on importance of SWB for preservation of high values of local biodiversity.",
publisher = "Springer, Cham: Springer",
journal = "Small Water Bodies of the Western Balkans",
booktitle = "The Importance of Small Water Bodies’ Conservation for Maintaining Local Amphibian Diversity in the Western Balkans",
doi = "10.1007/978-3-030-86478-1_17",
pages = "351-387"
}

Pešić, V., Milošević, Đ., Miliša, M., Crnobrnja-Isailović, J., Adrović, A., Bego, F., Čađenović, N., Hadžiahmetović Jurida, E., Jablonski, D., Sterijovski, B.,& Jovanović Glavaš, O.. (2022). The Importance of Small Water Bodies’ Conservation for Maintaining Local Amphibian Diversity in the Western Balkans. in Small Water Bodies of the Western Balkans
Springer., 351-387.
https://doi.org/10.1007/978-3-030-86478-1_17

Pešić V, Milošević Đ, Miliša M, Crnobrnja-Isailović J, Adrović A, Bego F, Čađenović N, Hadžiahmetović Jurida E, Jablonski D, Sterijovski B, Jovanović Glavaš O. The Importance of Small Water Bodies’ Conservation for Maintaining Local Amphibian Diversity in the Western Balkans. in Small Water Bodies of the Western Balkans. 2022;:351-387.
doi:10.1007/978-3-030-86478-1_17 .

Pešić, Vladimir, Milošević, Đurađ, Miliša, Marko, Crnobrnja-Isailović, Jelka, Adrović, Avdul, Bego, Ferdinand, Čađenović, Natalija, Hadžiahmetović Jurida, Elvira, Jablonski, Daniel, Sterijovski, Bogoljub, Jovanović Glavaš, Olga, "The Importance of Small Water Bodies’ Conservation for Maintaining Local Amphibian Diversity in the Western Balkans" in Small Water Bodies of the Western Balkans (2022):351-387,
https://doi.org/10.1007/978-3-030-86478-1_17 . .

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  - JOUR
AU  - Ballouard, Jean-Marie
AU  - Mullin, Stephen J.
AU  - Ajtić, Rastko D.
AU  - Brito, Jose Carlos
AU  - ElMouden, El Hassan
AU  - Erdogan, Mehmet
AU  - Feriche, Monica
AU  - Pleguezuelos, Juan M.
AU  - Prokop, Pavol
AU  - Sanchez, Aida
AU  - Santos, Xavier
AU  - Slimani, Tahar
AU  - Sterijovski, Bogoljub
AU  - Tomovic, Ljiljana
AU  - Usak, Muhammet
AU  - Zuffi, Marco
AU  - Bonnet, Xavier
PY  - 2015
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2003
AB  - Questionnaires are important tools for assessing attitudes regarding
   conservation issues. However, they are not easily comparable and their
   reliability has been insufficiently assessed. We examined factors
   influencing responses to open- and closed-ended questions about animal
   conservation to more than 600 schoolchildren (9 years old on average).
   We analysed the level of understanding, controllable (e.g. sample size)
   and less controllable factors (e.g. affectivity). Most children
   responded appropriately to the questions, but subtle changes in the
   phrasing influenced the answers. Affectivity towards endearing species
   and spontaneity also influenced the responses whereas small sample sizes
   (similar to 50 children) provided relatively stable patterns. Overall,
   we suggest that standardization of questionnaires administered over
   large spatial and time scales is needed to accurately assess children's
   attitudes towards conservation issues.
T2  - International Journal of Science Education
T1  - Factors Influencing Schoolchildren's Responses to a Questionnaire in
 Wildlife Conservation Education
IS  - 3
VL  - 37
DO  - 10.1080/09500693.2014.993000
SP  - 469
EP  - 483
ER  - 

@article{
author = "Ballouard, Jean-Marie and Mullin, Stephen J. and Ajtić, Rastko D. and Brito, Jose Carlos and ElMouden, El Hassan and Erdogan, Mehmet and Feriche, Monica and Pleguezuelos, Juan M. and Prokop, Pavol and Sanchez, Aida and Santos, Xavier and Slimani, Tahar and Sterijovski, Bogoljub and Tomovic, Ljiljana and Usak, Muhammet and Zuffi, Marco and Bonnet, Xavier",
year = "2015",
abstract = "Questionnaires are important tools for assessing attitudes regarding
   conservation issues. However, they are not easily comparable and their
   reliability has been insufficiently assessed. We examined factors
   influencing responses to open- and closed-ended questions about animal
   conservation to more than 600 schoolchildren (9 years old on average).
   We analysed the level of understanding, controllable (e.g. sample size)
   and less controllable factors (e.g. affectivity). Most children
   responded appropriately to the questions, but subtle changes in the
   phrasing influenced the answers. Affectivity towards endearing species
   and spontaneity also influenced the responses whereas small sample sizes
   (similar to 50 children) provided relatively stable patterns. Overall,
   we suggest that standardization of questionnaires administered over
   large spatial and time scales is needed to accurately assess children's
   attitudes towards conservation issues.",
journal = "International Journal of Science Education",
title = "Factors Influencing Schoolchildren's Responses to a Questionnaire in
 Wildlife Conservation Education",
number = "3",
volume = "37",
doi = "10.1080/09500693.2014.993000",
pages = "469-483"
}

Ballouard, J., Mullin, S. J., Ajtić, R. D., Brito, J. C., ElMouden, E. H., Erdogan, M., Feriche, M., Pleguezuelos, J. M., Prokop, P., Sanchez, A., Santos, X., Slimani, T., Sterijovski, B., Tomovic, L., Usak, M., Zuffi, M.,& Bonnet, X.. (2015). Factors Influencing Schoolchildren's Responses to a Questionnaire in
 Wildlife Conservation Education. in International Journal of Science Education, 37(3), 469-483.
https://doi.org/10.1080/09500693.2014.993000

Ballouard J, Mullin SJ, Ajtić RD, Brito JC, ElMouden EH, Erdogan M, Feriche M, Pleguezuelos JM, Prokop P, Sanchez A, Santos X, Slimani T, Sterijovski B, Tomovic L, Usak M, Zuffi M, Bonnet X. Factors Influencing Schoolchildren's Responses to a Questionnaire in
 Wildlife Conservation Education. in International Journal of Science Education. 2015;37(3):469-483.
doi:10.1080/09500693.2014.993000 .

Ballouard, Jean-Marie, Mullin, Stephen J., Ajtić, Rastko D., Brito, Jose Carlos, ElMouden, El Hassan, Erdogan, Mehmet, Feriche, Monica, Pleguezuelos, Juan M., Prokop, Pavol, Sanchez, Aida, Santos, Xavier, Slimani, Tahar, Sterijovski, Bogoljub, Tomovic, Ljiljana, Usak, Muhammet, Zuffi, Marco, Bonnet, Xavier, "Factors Influencing Schoolchildren's Responses to a Questionnaire in
 Wildlife Conservation Education" in International Journal of Science Education, 37, no. 3 (2015):469-483,
https://doi.org/10.1080/09500693.2014.993000 . .

TY  - JOUR
AU  - Sterijovski, Bogoljub
AU  - Tomovic, Ljiljana
AU  - Ajtić, Rastko D.
PY  - 2014
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2204
AB  - Although reptile fauna of FYR of Macedonia (FYROM) was the matter of
   interest since more than a century, detailed distributions of most of
   the species are still missing. According to published data, 32 reptile
   species inhabit FYROM. In this paper, detailed distribution data of
   reptile species in FYROM are presented. Research of herpetofauna of
   FYROM was conducted from 1999 until 2012 and included 393 localities.
   For 32 recorded reptile species, exact localities and altitudes, as well
   as published records are given. Analyses of the reptile diversity of the
   FYROM showed that the regions with the highest species diversity are:
   the Prespa and Ohrid Lake Region, Skopje region, Veles region and the
   Dojran Lake Region, with 18-21 reptile species per UTM 10 x 10 squares.
   These regions should be considered for the future designation of
   important herpetological areas at national level. Results of comparative
   analysis of reptile faunas from all Balkan countries showed that
   Macedonian fauna is the most similar with Albanian (92.537) and
   Bulgarian (90.909) reptile faunas. Zoogeographic analysis showed that
   reptile fauna of FYROM consists of eight chorotypes in total, the most
   dominant chorotype being the Eastern-Mediterranean with 13 species,
   followed by the Turano-Mediterranean with six and Southern-European with
   five species. Detailed distribution data of this study could be basis
   for future action plans, protection and conservation measures of
   reptiles in FYROM, and should be implemented in the national legislation
   and acts. In addition, this data are imperative for the Red Data Book of
   reptilians and designation of the Important Herpetological Areas in the
   country.
T2  - North-Western Journal of Zoology
T1  - Contribution to the knowledge of the Reptile fauna and diversity in FYR
 of Macedonia
IS  - 131519
VL  - 10
SP  - 83
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_2204
ER  - 

@article{
author = "Sterijovski, Bogoljub and Tomovic, Ljiljana and Ajtić, Rastko D.",
year = "2014",
abstract = "Although reptile fauna of FYR of Macedonia (FYROM) was the matter of
   interest since more than a century, detailed distributions of most of
   the species are still missing. According to published data, 32 reptile
   species inhabit FYROM. In this paper, detailed distribution data of
   reptile species in FYROM are presented. Research of herpetofauna of
   FYROM was conducted from 1999 until 2012 and included 393 localities.
   For 32 recorded reptile species, exact localities and altitudes, as well
   as published records are given. Analyses of the reptile diversity of the
   FYROM showed that the regions with the highest species diversity are:
   the Prespa and Ohrid Lake Region, Skopje region, Veles region and the
   Dojran Lake Region, with 18-21 reptile species per UTM 10 x 10 squares.
   These regions should be considered for the future designation of
   important herpetological areas at national level. Results of comparative
   analysis of reptile faunas from all Balkan countries showed that
   Macedonian fauna is the most similar with Albanian (92.537) and
   Bulgarian (90.909) reptile faunas. Zoogeographic analysis showed that
   reptile fauna of FYROM consists of eight chorotypes in total, the most
   dominant chorotype being the Eastern-Mediterranean with 13 species,
   followed by the Turano-Mediterranean with six and Southern-European with
   five species. Detailed distribution data of this study could be basis
   for future action plans, protection and conservation measures of
   reptiles in FYROM, and should be implemented in the national legislation
   and acts. In addition, this data are imperative for the Red Data Book of
   reptilians and designation of the Important Herpetological Areas in the
   country.",
journal = "North-Western Journal of Zoology",
title = "Contribution to the knowledge of the Reptile fauna and diversity in FYR
 of Macedonia",
number = "131519",
volume = "10",
pages = "83-92",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_2204"
}

Sterijovski, B., Tomovic, L.,& Ajtić, R. D.. (2014). Contribution to the knowledge of the Reptile fauna and diversity in FYR
 of Macedonia. in North-Western Journal of Zoology, 10(131519), 83-92.
https://hdl.handle.net/21.15107/rcub_ibiss_2204

Sterijovski B, Tomovic L, Ajtić RD. Contribution to the knowledge of the Reptile fauna and diversity in FYR
 of Macedonia. in North-Western Journal of Zoology. 2014;10(131519):83-92.
https://hdl.handle.net/21.15107/rcub_ibiss_2204 .

Sterijovski, Bogoljub, Tomovic, Ljiljana, Ajtić, Rastko D., "Contribution to the knowledge of the Reptile fauna and diversity in FYR
 of Macedonia" in North-Western Journal of Zoology, 10, no. 131519 (2014):83-92,
https://hdl.handle.net/21.15107/rcub_ibiss_2204 .

TY  - JOUR
AU  - Sterijovski, Bogoljub
AU  - Ajtić, Rastko D.
AU  - Tomovic, Ljiljana
AU  - Bonnet, Xavier
PY  - 2014
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2104
AB  - Most conservation efforts are channeled toward highly endangered
   species. However, snake populations decline rapidly worldwide, and many
   species that are currently classified as not threatened (e.g. LC - least
   concern, IUCN Red List) may well rapidly fall into the threatened
   categories. Yet, common species attract little attention. The principle,
   that it is more efficient to prevent disasters than to cure effects, is
   not taken into account. Dice Snakes (Natrix tessellata) offer a typical
   example of this situation. This species is one of the most widespread
   and polymorphic snake of the planet. Very large populations occur in the
   Balkans. On Golem Grad Island (the single island of FYR of Macedonia), a
   remarkable population of Dice Snakes suffers from recent assaults.
   Thousands of snakes are killed every year in the nets set by poachers,
   notably gravid females, raising population viability concerns.
   Protecting Dice Snakes, other reptiles (e.g. tortoises, vipers, and
   lizards) and the whole eco-system of Golem Grad Island would require
   moderate efforts: application of official rules, summer attendance,
   delivery of official permits to local people (including fishermen), and
   controlling tourism. In this paper, we addressed a central issue: does
   illegal fishing represent a potential threat to Dice Snakes? Our data
   suggest that recent increase of illegal fishing correlates with
   population decline.
T2  - Herpetological Conservation and Biology
T1  - CONSERVATION THREATS TO DICE SNAKES (NATRIX TESSELLATA) IN GOLEM GRAD
 ISLAND (FYR OF MACEDONIA)
IS  - 3
VL  - 9
SP  - 468
EP  - 474
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_2104
ER  - 

@article{
author = "Sterijovski, Bogoljub and Ajtić, Rastko D. and Tomovic, Ljiljana and Bonnet, Xavier",
year = "2014",
abstract = "Most conservation efforts are channeled toward highly endangered
   species. However, snake populations decline rapidly worldwide, and many
   species that are currently classified as not threatened (e.g. LC - least
   concern, IUCN Red List) may well rapidly fall into the threatened
   categories. Yet, common species attract little attention. The principle,
   that it is more efficient to prevent disasters than to cure effects, is
   not taken into account. Dice Snakes (Natrix tessellata) offer a typical
   example of this situation. This species is one of the most widespread
   and polymorphic snake of the planet. Very large populations occur in the
   Balkans. On Golem Grad Island (the single island of FYR of Macedonia), a
   remarkable population of Dice Snakes suffers from recent assaults.
   Thousands of snakes are killed every year in the nets set by poachers,
   notably gravid females, raising population viability concerns.
   Protecting Dice Snakes, other reptiles (e.g. tortoises, vipers, and
   lizards) and the whole eco-system of Golem Grad Island would require
   moderate efforts: application of official rules, summer attendance,
   delivery of official permits to local people (including fishermen), and
   controlling tourism. In this paper, we addressed a central issue: does
   illegal fishing represent a potential threat to Dice Snakes? Our data
   suggest that recent increase of illegal fishing correlates with
   population decline.",
journal = "Herpetological Conservation and Biology",
title = "CONSERVATION THREATS TO DICE SNAKES (NATRIX TESSELLATA) IN GOLEM GRAD
 ISLAND (FYR OF MACEDONIA)",
number = "3",
volume = "9",
pages = "468-474",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_2104"
}

Sterijovski, B., Ajtić, R. D., Tomovic, L.,& Bonnet, X.. (2014). CONSERVATION THREATS TO DICE SNAKES (NATRIX TESSELLATA) IN GOLEM GRAD
 ISLAND (FYR OF MACEDONIA). in Herpetological Conservation and Biology, 9(3), 468-474.
https://hdl.handle.net/21.15107/rcub_ibiss_2104

Sterijovski B, Ajtić RD, Tomovic L, Bonnet X. CONSERVATION THREATS TO DICE SNAKES (NATRIX TESSELLATA) IN GOLEM GRAD
 ISLAND (FYR OF MACEDONIA). in Herpetological Conservation and Biology. 2014;9(3):468-474.
https://hdl.handle.net/21.15107/rcub_ibiss_2104 .

Sterijovski, Bogoljub, Ajtić, Rastko D., Tomovic, Ljiljana, Bonnet, Xavier, "CONSERVATION THREATS TO DICE SNAKES (NATRIX TESSELLATA) IN GOLEM GRAD
 ISLAND (FYR OF MACEDONIA)" in Herpetological Conservation and Biology, 9, no. 3 (2014):468-474,
https://hdl.handle.net/21.15107/rcub_ibiss_2104 .

TY  - JOUR
AU  - Ajtić, Rastko D
AU  - Tomović, Ljiljana M
AU  - Sterijovski, Bogoljub
AU  - Crnobrnja-Isailović, Jelka M.
AU  - Đorđević, Sonja Z
AU  - Đurakić, Marko R
AU  - Golubović, Ana
AU  - Simović, Aleksandar
AU  - Arsovski, Dragan
AU  - Anđelković, Marko
AU  - Krstić, Milivoj
AU  - Sukalo, Goran
AU  - Gvozdenović, Slađana
AU  - Aidam, Aurelie
AU  - Michel, Catherine Louise
AU  - Ballouard, Jean-Marie
AU  - Bonnet, Xavier
PY  - 2013
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1055
AB  - A population of dice snakes (Natrix tessellate) monitored since 2008 in a small island (18 ha, 850 m a.s.l., FYR of Macedonia) revealed unforeseen patterns for snakes living in temperate climates. More than 5000 individuals have been marked and the density is one of the highest ever recorded (>500 resident snakes per hectare). Reproductive and mortality rates are elevated, suggesting a high population turnover. These traits evoke a tropical rather than a temperate-climate ophidian demographic system. The population is highly polymorphic, three colour morphs (dotted, grey, and black) are observed in both sexes and each morph is represented by large numbers of individuals. This polymorphism pattern was not previously documented in snakes. Data obtained for other life history traits (e.g. body size, size at maturity, clutch size, diet, predation) markedly diverged in comparison to available information. Overall, our results reinforce the notion that the strong inter-population variability (often mediated by phenotypic plasticity) of snakes should be taken into account over large geographic scales; otherwise attempts to derive general patterns may well be strongly biased. (C) 2012 Elsevier GmbH. All rights reserved.
T2  - Zoologischer Anzeiger
T1  - Unexpected life history traits in a very dense population of dice snakes
IS  - 3
VL  - 252
SP  - 103
EP  - 358
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1055
ER  - 

@article{
author = "Ajtić, Rastko D and Tomović, Ljiljana M and Sterijovski, Bogoljub and Crnobrnja-Isailović, Jelka M. and Đorđević, Sonja Z and Đurakić, Marko R and Golubović, Ana and Simović, Aleksandar and Arsovski, Dragan and Anđelković, Marko and Krstić, Milivoj and Sukalo, Goran and Gvozdenović, Slađana and Aidam, Aurelie and Michel, Catherine Louise and Ballouard, Jean-Marie and Bonnet, Xavier",
year = "2013",
abstract = "A population of dice snakes (Natrix tessellate) monitored since 2008 in a small island (18 ha, 850 m a.s.l., FYR of Macedonia) revealed unforeseen patterns for snakes living in temperate climates. More than 5000 individuals have been marked and the density is one of the highest ever recorded (>500 resident snakes per hectare). Reproductive and mortality rates are elevated, suggesting a high population turnover. These traits evoke a tropical rather than a temperate-climate ophidian demographic system. The population is highly polymorphic, three colour morphs (dotted, grey, and black) are observed in both sexes and each morph is represented by large numbers of individuals. This polymorphism pattern was not previously documented in snakes. Data obtained for other life history traits (e.g. body size, size at maturity, clutch size, diet, predation) markedly diverged in comparison to available information. Overall, our results reinforce the notion that the strong inter-population variability (often mediated by phenotypic plasticity) of snakes should be taken into account over large geographic scales; otherwise attempts to derive general patterns may well be strongly biased. (C) 2012 Elsevier GmbH. All rights reserved.",
journal = "Zoologischer Anzeiger",
title = "Unexpected life history traits in a very dense population of dice snakes",
number = "3",
volume = "252",
pages = "103-358",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1055"
}

Ajtić, R. D., Tomović, L. M., Sterijovski, B., Crnobrnja-Isailović, J. M., Đorđević, S. Z., Đurakić, M. R., Golubović, A., Simović, A., Arsovski, D., Anđelković, M., Krstić, M., Sukalo, G., Gvozdenović, S., Aidam, A., Michel, C. L., Ballouard, J.,& Bonnet, X.. (2013). Unexpected life history traits in a very dense population of dice snakes. in Zoologischer Anzeiger, 252(3), 103-358.
https://hdl.handle.net/21.15107/rcub_ibiss_1055

Ajtić RD, Tomović LM, Sterijovski B, Crnobrnja-Isailović JM, Đorđević SZ, Đurakić MR, Golubović A, Simović A, Arsovski D, Anđelković M, Krstić M, Sukalo G, Gvozdenović S, Aidam A, Michel CL, Ballouard J, Bonnet X. Unexpected life history traits in a very dense population of dice snakes. in Zoologischer Anzeiger. 2013;252(3):103-358.
https://hdl.handle.net/21.15107/rcub_ibiss_1055 .

Ajtić, Rastko D, Tomović, Ljiljana M, Sterijovski, Bogoljub, Crnobrnja-Isailović, Jelka M., Đorđević, Sonja Z, Đurakić, Marko R, Golubović, Ana, Simović, Aleksandar, Arsovski, Dragan, Anđelković, Marko, Krstić, Milivoj, Sukalo, Goran, Gvozdenović, Slađana, Aidam, Aurelie, Michel, Catherine Louise, Ballouard, Jean-Marie, Bonnet, Xavier, "Unexpected life history traits in a very dense population of dice snakes" in Zoologischer Anzeiger, 252, no. 3 (2013):103-358,
https://hdl.handle.net/21.15107/rcub_ibiss_1055 .

TY  - JOUR
AU  - Đorđević, Sonja
AU  - Tomović, Ljiljana
AU  - Golubović, Ana
AU  - Simović, Aleksandar
AU  - Sterijovski, Bogoljub
AU  - Đurakić, Marko
AU  - Bonnet, Xavier
PY  - 2013
UR  - http://www.scopus.com/inward/record.url?eid=2-s2.0-84876362881&partnerID=tZOtx3y1
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2458
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2464
UR  - http://www.ingentaconnect.com/contentone/bhs/thj/2013/00000023/00000002/art00001
AB  - We processed 40 morphological characteristics of 676 adult Hermann's tortoises (Testudo hermanni) (310 males and 366 females) from four localities in the central parts of the Balkan Peninsula. Analyses of variance and covariance showed significant differences between males and females in 38 and 35 traits, respectively. On the other hand, analyses of geographic variability within each gender, i.e. analyses of variance and covariance of separate traits between localities showed "constant" dimensions and proportions of several body parts. Most of the invariable traits were the elements of the rear portion of the tortoises' shell and free body parts, in both genders. Among these are some of the most prominent sexually dimorphic traits in T. hermanni. Therefore, we speculate that "standard" sizes of certain superficial bodily attributes in this species are conditioned by their role in gender discrimination, as well as courting and mating endeavours.
T2  - Herpetological Journal
T1  - Geographic (in-)variability of gender-specific traits in Hermann's tortoise
IS  - 2
VL  - 23
SP  - 67
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_2464
ER  - 

@article{
author = "Đorđević, Sonja and Tomović, Ljiljana and Golubović, Ana and Simović, Aleksandar and Sterijovski, Bogoljub and Đurakić, Marko and Bonnet, Xavier",
year = "2013",
abstract = "We processed 40 morphological characteristics of 676 adult Hermann's tortoises (Testudo hermanni) (310 males and 366 females) from four localities in the central parts of the Balkan Peninsula. Analyses of variance and covariance showed significant differences between males and females in 38 and 35 traits, respectively. On the other hand, analyses of geographic variability within each gender, i.e. analyses of variance and covariance of separate traits between localities showed "constant" dimensions and proportions of several body parts. Most of the invariable traits were the elements of the rear portion of the tortoises' shell and free body parts, in both genders. Among these are some of the most prominent sexually dimorphic traits in T. hermanni. Therefore, we speculate that "standard" sizes of certain superficial bodily attributes in this species are conditioned by their role in gender discrimination, as well as courting and mating endeavours.",
journal = "Herpetological Journal",
title = "Geographic (in-)variability of gender-specific traits in Hermann's tortoise",
number = "2",
volume = "23",
pages = "67-73",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_2464"
}

Đorđević, S., Tomović, L., Golubović, A., Simović, A., Sterijovski, B., Đurakić, M.,& Bonnet, X.. (2013). Geographic (in-)variability of gender-specific traits in Hermann's tortoise. in Herpetological Journal, 23(2), 67-73.
https://hdl.handle.net/21.15107/rcub_ibiss_2464

Đorđević S, Tomović L, Golubović A, Simović A, Sterijovski B, Đurakić M, Bonnet X. Geographic (in-)variability of gender-specific traits in Hermann's tortoise. in Herpetological Journal. 2013;23(2):67-73.
https://hdl.handle.net/21.15107/rcub_ibiss_2464 .

Đorđević, Sonja, Tomović, Ljiljana, Golubović, Ana, Simović, Aleksandar, Sterijovski, Bogoljub, Đurakić, Marko, Bonnet, Xavier, "Geographic (in-)variability of gender-specific traits in Hermann's tortoise" in Herpetological Journal, 23, no. 2 (2013):67-73,
https://hdl.handle.net/21.15107/rcub_ibiss_2464 .

TY  - JOUR
AU  - Đorđević, Sonja Z
AU  - Tomović, Ljiljana M
AU  - Golubović, Ana
AU  - Simović, Aleksandar
AU  - Sterijovski, Bogoljub
AU  - Đurakić, Marko R
AU  - Bonnet, Xavier
PY  - 2013
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1023
AB  - We processed 40 morphological characteristics of 676 adult Hermann's tortoises (Testudo hermanni) (310 males and 366 females) from four localities in the central parts of the Balkan Peninsula. Analyses of variance and covariance showed significant differences between males and females in 38 and 35 traits, respectively. On the other hand, analyses of geographic variability within each gender, i.e. analyses of variance and covariance of separate traits between localities showed "constant" dimensions and proportions of several body parts. Most of the invariable traits were the elements of the rear portion of the tortoises' shell and free body parts, in both genders. Among these are some of the most prominent sexually dimorphic traits in T hermanni. Therefore, we speculate that "standard" sizes of certain superficial bodily attributes in this species are conditioned by their role in gender discrimination, as well as courting and mating endeavours.
T2  - Herpetological Journal
T1  - Geographic (in-)variability of gender-specific traits in Hermann's tortoise
IS  - 2
VL  - 23
SP  - 501
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1023
ER  - 

@article{
author = "Đorđević, Sonja Z and Tomović, Ljiljana M and Golubović, Ana and Simović, Aleksandar and Sterijovski, Bogoljub and Đurakić, Marko R and Bonnet, Xavier",
year = "2013",
abstract = "We processed 40 morphological characteristics of 676 adult Hermann's tortoises (Testudo hermanni) (310 males and 366 females) from four localities in the central parts of the Balkan Peninsula. Analyses of variance and covariance showed significant differences between males and females in 38 and 35 traits, respectively. On the other hand, analyses of geographic variability within each gender, i.e. analyses of variance and covariance of separate traits between localities showed "constant" dimensions and proportions of several body parts. Most of the invariable traits were the elements of the rear portion of the tortoises' shell and free body parts, in both genders. Among these are some of the most prominent sexually dimorphic traits in T hermanni. Therefore, we speculate that "standard" sizes of certain superficial bodily attributes in this species are conditioned by their role in gender discrimination, as well as courting and mating endeavours.",
journal = "Herpetological Journal",
title = "Geographic (in-)variability of gender-specific traits in Hermann's tortoise",
number = "2",
volume = "23",
pages = "501-73",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1023"
}

Đorđević, S. Z., Tomović, L. M., Golubović, A., Simović, A., Sterijovski, B., Đurakić, M. R.,& Bonnet, X.. (2013). Geographic (in-)variability of gender-specific traits in Hermann's tortoise. in Herpetological Journal, 23(2), 501-73.
https://hdl.handle.net/21.15107/rcub_ibiss_1023

Đorđević SZ, Tomović LM, Golubović A, Simović A, Sterijovski B, Đurakić MR, Bonnet X. Geographic (in-)variability of gender-specific traits in Hermann's tortoise. in Herpetological Journal. 2013;23(2):501-73.
https://hdl.handle.net/21.15107/rcub_ibiss_1023 .

Đorđević, Sonja Z, Tomović, Ljiljana M, Golubović, Ana, Simović, Aleksandar, Sterijovski, Bogoljub, Đurakić, Marko R, Bonnet, Xavier, "Geographic (in-)variability of gender-specific traits in Hermann's tortoise" in Herpetological Journal, 23, no. 2 (2013):501-73,
https://hdl.handle.net/21.15107/rcub_ibiss_1023 .

TY  - CONF
AU  - Tomović, Ljiljana
AU  - Ajtić, Rastko
AU  - Đorđević, Sonja
AU  - Simović, Aleksandar
AU  - Golubović, Ana
AU  - Anđelković, Marko
AU  - Arsovski, Dragan
AU  - Trajčevska, Ivona
AU  - Krstić, Milivoj
AU  - Ballouard, Jean-Marie
AU  - Bonnet, Xavier
AU  - Sterijovski, Bogoljub
PY  - 2012
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5209
AB  - Population studies on three reptile species (Testudo hermanni, Natrix tessellata and Vipera ammodytes)were established in 2007 on a small island in Prespa Lake. The island of Golem Grad is part of theNational Park “Galicica“ and has a status of a strictly protected area. The research was done on the areaof the whole island (plateau and beaches of approximately 20 ha) in three periods of the active seasonin six consecutive years. Since the beginning of the studies more than 1600 tortoises, 5000 dice snakesand 350 nose horned vipers were marked. These results of the CMR study are excellent matrix for pre-cise estimation of the population density and size, indicating that these are among the densest popula-tions of these species in the world. This suggests that the reptile populations on the island are prosper-ous and can be a model system for future ecology studies on reptiles in other parts of the country orelsewhere. Also the results can contribute to determine the protection status and conservation measureson national level for these species
PB  - Skopje: Macedonian Ecological Society
C3  - Abstract Book: IV Congress of Ecologists of the Republic of Macedonia, with international participation: on the occasion of the 40th anniversary of the Macedonisa Ecological Society; 2012 Oct 12-15; Ohrid, North Macedonia
T1  - Reptile megalopolis on a small island: Population studies on Reptiles on the island of Golem Grad
SP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5209
ER  - 

@conference{
author = "Tomović, Ljiljana and Ajtić, Rastko and Đorđević, Sonja and Simović, Aleksandar and Golubović, Ana and Anđelković, Marko and Arsovski, Dragan and Trajčevska, Ivona and Krstić, Milivoj and Ballouard, Jean-Marie and Bonnet, Xavier and Sterijovski, Bogoljub",
year = "2012",
abstract = "Population studies on three reptile species (Testudo hermanni, Natrix tessellata and Vipera ammodytes)were established in 2007 on a small island in Prespa Lake. The island of Golem Grad is part of theNational Park “Galicica“ and has a status of a strictly protected area. The research was done on the areaof the whole island (plateau and beaches of approximately 20 ha) in three periods of the active seasonin six consecutive years. Since the beginning of the studies more than 1600 tortoises, 5000 dice snakesand 350 nose horned vipers were marked. These results of the CMR study are excellent matrix for pre-cise estimation of the population density and size, indicating that these are among the densest popula-tions of these species in the world. This suggests that the reptile populations on the island are prosper-ous and can be a model system for future ecology studies on reptiles in other parts of the country orelsewhere. Also the results can contribute to determine the protection status and conservation measureson national level for these species",
publisher = "Skopje: Macedonian Ecological Society",
journal = "Abstract Book: IV Congress of Ecologists of the Republic of Macedonia, with international participation: on the occasion of the 40th anniversary of the Macedonisa Ecological Society; 2012 Oct 12-15; Ohrid, North Macedonia",
title = "Reptile megalopolis on a small island: Population studies on Reptiles on the island of Golem Grad",
pages = "57",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5209"
}

Tomović, L., Ajtić, R., Đorđević, S., Simović, A., Golubović, A., Anđelković, M., Arsovski, D., Trajčevska, I., Krstić, M., Ballouard, J., Bonnet, X.,& Sterijovski, B.. (2012). Reptile megalopolis on a small island: Population studies on Reptiles on the island of Golem Grad. in Abstract Book: IV Congress of Ecologists of the Republic of Macedonia, with international participation: on the occasion of the 40th anniversary of the Macedonisa Ecological Society; 2012 Oct 12-15; Ohrid, North Macedonia
Skopje: Macedonian Ecological Society., 57.
https://hdl.handle.net/21.15107/rcub_ibiss_5209

Tomović L, Ajtić R, Đorđević S, Simović A, Golubović A, Anđelković M, Arsovski D, Trajčevska I, Krstić M, Ballouard J, Bonnet X, Sterijovski B. Reptile megalopolis on a small island: Population studies on Reptiles on the island of Golem Grad. in Abstract Book: IV Congress of Ecologists of the Republic of Macedonia, with international participation: on the occasion of the 40th anniversary of the Macedonisa Ecological Society; 2012 Oct 12-15; Ohrid, North Macedonia. 2012;:57.
https://hdl.handle.net/21.15107/rcub_ibiss_5209 .

Tomović, Ljiljana, Ajtić, Rastko, Đorđević, Sonja, Simović, Aleksandar, Golubović, Ana, Anđelković, Marko, Arsovski, Dragan, Trajčevska, Ivona, Krstić, Milivoj, Ballouard, Jean-Marie, Bonnet, Xavier, Sterijovski, Bogoljub, "Reptile megalopolis on a small island: Population studies on Reptiles on the island of Golem Grad" in Abstract Book: IV Congress of Ecologists of the Republic of Macedonia, with international participation: on the occasion of the 40th anniversary of the Macedonisa Ecological Society; 2012 Oct 12-15; Ohrid, North Macedonia (2012):57,
https://hdl.handle.net/21.15107/rcub_ibiss_5209 .