TY  - JOUR
AU  - Bjelica, Vukašin
AU  - Anđelković, Marko
AU  - Lakušić, Margareta
AU  - Maričić, Marko
AU  - Arsovski, Dragan
AU  - Tomović, Ljiljana
AU  - Golubović, Ana
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5718
AB  - When captured by a predator, the prey’s options for escape decrease dramatically; however, some species, such as dice snakes, display a wide variety of behaviours in order to escape. We explored how factors such as locality, body temperature, body size, sex, reproductive status (i.e. gravid vs. non-gravid), presence and state of injuries, and the presence of food affect the occurrence of behavioural displays in a capture situation within and among four free-ranging populations of dice snakes, Natrix tessellata (Colubridae). Our study shows that dice snakes regularly hiss, discharge their cloacal glands, and coat themselves in musk when captured, while other behaviours were displayed only occasionally. Our study corroborates previous findings of local differentiation in snake behaviour, especially the case of supposed Batesian mimicry in dice snakes. In three of four localities where the dice snake lives in proximity or in sympatry with nose-horned vipers, they display fake striking, with additional head flattening as opposed to the viper-free locality. Larger snakes exhibit a wider array of antipredator behaviours, which commonly include musking and hissing. Expectedly, warmer snakes were more likely to display vigorous antipredator
behaviours such as struggling and striking. Injured snakes (a possible measure of a previous exposure to predation) displayed fewer behaviours and musked and hissed less. We call into question the analysis of isolated antipredator behavioural displays, and encourage using entire behavioural sequences in order to understand the complexity of antipredator behaviour.
PB  - New York: Springer Nature
T2  - Behavioral Ecology and Sociobiology
T1  - A dicey situation: capture behaviours in free‑ranging dice snakes
IS  - 5
VL  - 77
DO  - 10.1007/s00265-023-03323-9
SP  - 48
ER  - 

@article{
author = "Bjelica, Vukašin and Anđelković, Marko and Lakušić, Margareta and Maričić, Marko and Arsovski, Dragan and Tomović, Ljiljana and Golubović, Ana",
year = "2023",
abstract = "When captured by a predator, the prey’s options for escape decrease dramatically; however, some species, such as dice snakes, display a wide variety of behaviours in order to escape. We explored how factors such as locality, body temperature, body size, sex, reproductive status (i.e. gravid vs. non-gravid), presence and state of injuries, and the presence of food affect the occurrence of behavioural displays in a capture situation within and among four free-ranging populations of dice snakes, Natrix tessellata (Colubridae). Our study shows that dice snakes regularly hiss, discharge their cloacal glands, and coat themselves in musk when captured, while other behaviours were displayed only occasionally. Our study corroborates previous findings of local differentiation in snake behaviour, especially the case of supposed Batesian mimicry in dice snakes. In three of four localities where the dice snake lives in proximity or in sympatry with nose-horned vipers, they display fake striking, with additional head flattening as opposed to the viper-free locality. Larger snakes exhibit a wider array of antipredator behaviours, which commonly include musking and hissing. Expectedly, warmer snakes were more likely to display vigorous antipredator
behaviours such as struggling and striking. Injured snakes (a possible measure of a previous exposure to predation) displayed fewer behaviours and musked and hissed less. We call into question the analysis of isolated antipredator behavioural displays, and encourage using entire behavioural sequences in order to understand the complexity of antipredator behaviour.",
publisher = "New York: Springer Nature",
journal = "Behavioral Ecology and Sociobiology",
title = "A dicey situation: capture behaviours in free‑ranging dice snakes",
number = "5",
volume = "77",
doi = "10.1007/s00265-023-03323-9",
pages = "48"
}

Bjelica, V., Anđelković, M., Lakušić, M., Maričić, M., Arsovski, D., Tomović, L.,& Golubović, A.. (2023). A dicey situation: capture behaviours in free‑ranging dice snakes. in Behavioral Ecology and Sociobiology
New York: Springer Nature., 77(5), 48.
https://doi.org/10.1007/s00265-023-03323-9

Bjelica V, Anđelković M, Lakušić M, Maričić M, Arsovski D, Tomović L, Golubović A. A dicey situation: capture behaviours in free‑ranging dice snakes. in Behavioral Ecology and Sociobiology. 2023;77(5):48.
doi:10.1007/s00265-023-03323-9 .

Bjelica, Vukašin, Anđelković, Marko, Lakušić, Margareta, Maričić, Marko, Arsovski, Dragan, Tomović, Ljiljana, Golubović, Ana, "A dicey situation: capture behaviours in free‑ranging dice snakes" in Behavioral Ecology and Sociobiology, 77, no. 5 (2023):48,
https://doi.org/10.1007/s00265-023-03323-9 . .

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  - Bjelica, Vukašin
AU  - Arsovski, Dragan
AU  - Anđelković, Marko
AU  - Maričić, Marko
AU  - Lakušić, Margareta
AU  - Avramović, Stefan
AU  - Tomović, Ljiljana
PY  - 2022
UR  - http://www.mjee.org.mk/index.php/mjee/article/view/173
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5477
AB  - Studies of body condition in snakes are generally lacking and were only done on a few species and with limited sample sizes. Additionally, almost no studies considered how different factors affect body condition. We used a large dataset amassed over a 15 year-long ecological study to make a preliminary screening of body condition index (BCI) variation in a metapopulation of dice snakes (Natrix tessellata) in the region of Lake Prespa. We considered how factors such as sex, food, colour morph, locality and time affect BCI. We demonstrate a positive effect of food (relatively less in males), and lower BCI in females. Importantly, there is a strong seasonal effect, summer months having a positive effect as opposed to spring. The results of our study raise important considerations for future studies on snake BCI, but also conservation of freshwater ecosystems.
PB  - Skopje: Macedonian Ecological Society
T2  - Macedonian Journal of Ecology and Environment
T1  - Preliminary overview of body condition variation among dice snake populations from transboundary Lake Prespa
IS  - 1
VL  - 24
SP  - 17
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5477
ER  - 

@article{
author = "Bjelica, Vukašin and Arsovski, Dragan and Anđelković, Marko and Maričić, Marko and Lakušić, Margareta and Avramović, Stefan and Tomović, Ljiljana",
year = "2022",
abstract = "Studies of body condition in snakes are generally lacking and were only done on a few species and with limited sample sizes. Additionally, almost no studies considered how different factors affect body condition. We used a large dataset amassed over a 15 year-long ecological study to make a preliminary screening of body condition index (BCI) variation in a metapopulation of dice snakes (Natrix tessellata) in the region of Lake Prespa. We considered how factors such as sex, food, colour morph, locality and time affect BCI. We demonstrate a positive effect of food (relatively less in males), and lower BCI in females. Importantly, there is a strong seasonal effect, summer months having a positive effect as opposed to spring. The results of our study raise important considerations for future studies on snake BCI, but also conservation of freshwater ecosystems.",
publisher = "Skopje: Macedonian Ecological Society",
journal = "Macedonian Journal of Ecology and Environment",
title = "Preliminary overview of body condition variation among dice snake populations from transboundary Lake Prespa",
number = "1",
volume = "24",
pages = "17-25",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5477"
}

Bjelica, V., Arsovski, D., Anđelković, M., Maričić, M., Lakušić, M., Avramović, S.,& Tomović, L.. (2022). Preliminary overview of body condition variation among dice snake populations from transboundary Lake Prespa. in Macedonian Journal of Ecology and Environment
Skopje: Macedonian Ecological Society., 24(1), 17-25.
https://hdl.handle.net/21.15107/rcub_ibiss_5477

Bjelica V, Arsovski D, Anđelković M, Maričić M, Lakušić M, Avramović S, Tomović L. Preliminary overview of body condition variation among dice snake populations from transboundary Lake Prespa. in Macedonian Journal of Ecology and Environment. 2022;24(1):17-25.
https://hdl.handle.net/21.15107/rcub_ibiss_5477 .

Bjelica, Vukašin, Arsovski, Dragan, Anđelković, Marko, Maričić, Marko, Lakušić, Margareta, Avramović, Stefan, Tomović, Ljiljana, "Preliminary overview of body condition variation among dice snake populations from transboundary Lake Prespa" in Macedonian Journal of Ecology and Environment, 24, no. 1 (2022):17-25,
https://hdl.handle.net/21.15107/rcub_ibiss_5477 .

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  - CONF
AU  - Bjelica, Vukašin
AU  - Maričić, Marko
AU  - Anđelković, Marko
AU  - Lakušić, Margareta
AU  - Arsovski, Dragan
AU  - Tomović, Ljiljana
AU  - Golubović, Ana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5274
AB  - Prey animals have developed a wide array of antipredator behaviours to confront, dissuade or escape a predator. Death feigning (DF), where prey animals get in a tonic immobile state and resemble dead animal, is a sort of a last-ditch attempt to escape consumption. Even if this behaviour works, it is vitally important that the prey chooses the right time to escape: a quick decision may attract the predators' attention, while waiting too long might prolong exposure. In the field, we measured both the occurrence and the duration of DF in three distinct colour morphs of dice snakes; the most common dice morph, uniformly green, and melanistic individuals. We sampled only adult individuals and considered factors such as sex, size, body temperature, injuries, and presence of food, gravidity as well as absolute crawling speeds on the occurrence and duration of DF. Our results suggest that females DF more often than males and that gravid females DF the least often. Snakes that crawled faster were less likely to DF, but interestingly, gravid females that crawled faster were more likely to DF. Diced and green gravid snakes spent far less time in DF than nongravid individuals, while in melanistic snakes gravidity did not affect DF duration. These differences are especially pronounced in the uniformly green snakes. Additionally, colder, bigger and faster snakes DF for longer intervals. Larger snakes cannot be immediately consumed and thus can afford to try a risky strategy such as DF, which is supposedly used as a hard reset in a predator-prey interaction. Gravidity undoubtedly imposes significant constraints on snakes and probably limits escape options and makes DF too risky. However, melanism can offer certain advantages to gravid individuals, notably thermal benefits and in turn a higher metabolic rate and locomotor capacity which can prove beneficial in a DF situation.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Drop dead gorgeous: death feigning behaviour in three distinct colour morphs. of dice snakes
SP  - 103
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5274
ER  - 

@conference{
author = "Bjelica, Vukašin and Maričić, Marko and Anđelković, Marko and Lakušić, Margareta and Arsovski, Dragan and Tomović, Ljiljana and Golubović, Ana",
year = "2022",
abstract = "Prey animals have developed a wide array of antipredator behaviours to confront, dissuade or escape a predator. Death feigning (DF), where prey animals get in a tonic immobile state and resemble dead animal, is a sort of a last-ditch attempt to escape consumption. Even if this behaviour works, it is vitally important that the prey chooses the right time to escape: a quick decision may attract the predators' attention, while waiting too long might prolong exposure. In the field, we measured both the occurrence and the duration of DF in three distinct colour morphs of dice snakes; the most common dice morph, uniformly green, and melanistic individuals. We sampled only adult individuals and considered factors such as sex, size, body temperature, injuries, and presence of food, gravidity as well as absolute crawling speeds on the occurrence and duration of DF. Our results suggest that females DF more often than males and that gravid females DF the least often. Snakes that crawled faster were less likely to DF, but interestingly, gravid females that crawled faster were more likely to DF. Diced and green gravid snakes spent far less time in DF than nongravid individuals, while in melanistic snakes gravidity did not affect DF duration. These differences are especially pronounced in the uniformly green snakes. Additionally, colder, bigger and faster snakes DF for longer intervals. Larger snakes cannot be immediately consumed and thus can afford to try a risky strategy such as DF, which is supposedly used as a hard reset in a predator-prey interaction. Gravidity undoubtedly imposes significant constraints on snakes and probably limits escape options and makes DF too risky. However, melanism can offer certain advantages to gravid individuals, notably thermal benefits and in turn a higher metabolic rate and locomotor capacity which can prove beneficial in a DF situation.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Drop dead gorgeous: death feigning behaviour in three distinct colour morphs. of dice snakes",
pages = "103",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5274"
}

Bjelica, V., Maričić, M., Anđelković, M., Lakušić, M., Arsovski, D., Tomović, L.,& Golubović, A.. (2022). Drop dead gorgeous: death feigning behaviour in three distinct colour morphs. of dice snakes. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 103.
https://hdl.handle.net/21.15107/rcub_ibiss_5274

Bjelica V, Maričić M, Anđelković M, Lakušić M, Arsovski D, Tomović L, Golubović A. Drop dead gorgeous: death feigning behaviour in three distinct colour morphs. of dice snakes. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;:103.
https://hdl.handle.net/21.15107/rcub_ibiss_5274 .

Bjelica, Vukašin, Maričić, Marko, Anđelković, Marko, Lakušić, Margareta, Arsovski, Dragan, Tomović, Ljiljana, Golubović, Ana, "Drop dead gorgeous: death feigning behaviour in three distinct colour morphs. of dice snakes" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia (2022):103,
https://hdl.handle.net/21.15107/rcub_ibiss_5274 .

TY  - CONF
AU  - Bjelica, Vukašin
AU  - Anđelković, Marko
AU  - Lakušić, Margareta
AU  - Maričić, Marko
AU  - Arsovski, Dragan
AU  - Tomović, Ljiljana
AU  - Golubović, Ana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5275
AB  - Prey animals have a wide array of strategies that they use to avoid or deter predators. In some cases, these strategies include warding off a predator attack by advertising strong chemical defences, such as venom, or by mimicking sympatric species, which do possess such defences (i.e. bluffing/mimicry). Dice snakes are nonvenemous natricine snakes that often live in sympatry with vipers. These snakes also have an ample arsenal of antipredator behavioural displays that include bluffing, characterized by hissing (auditory mimicry) with head flattening and fake strikes (visual mimicry). We measured the occurrence of bluffing displays in four different localities; on Golem Grad Island and in Konjsko (North Macedonia), where dice snakes share their habitat with nose-horned vipers (Vipera mmodytes) while in the other two localities, Mal Grad Island (Albania) and Pančevački rit Serbia), vipers are not present. We analysed the effect of locality, size (snout to vent length) nd sex on occurrence of bluffing as an antipredator strategy. Our results show that the ccurrence of bluffing was significantly affected by locality and body size. Notably, in the two localities where dice snakes share the same habitat with vipers the occurrence of bluffing displays is significantly higher than in the two localities where vipers are not present. This possibly indicates a case of Batesian mimicry, reported for the first time in dice snakes. Additionaly, our analysis shows that the predicted probabilities of the occurrence of bluffing increased with size. This seems intuitive, as bluffing behaviours should have a certain size threshold when they become effective, since small snakes can be easily consumed.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Barking Dogs Never Bite: Bluffing behaviour in dice snakes (Natrix tessellata)
SP  - 117
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5275
ER  - 

@conference{
author = "Bjelica, Vukašin and Anđelković, Marko and Lakušić, Margareta and Maričić, Marko and Arsovski, Dragan and Tomović, Ljiljana and Golubović, Ana",
year = "2022",
abstract = "Prey animals have a wide array of strategies that they use to avoid or deter predators. In some cases, these strategies include warding off a predator attack by advertising strong chemical defences, such as venom, or by mimicking sympatric species, which do possess such defences (i.e. bluffing/mimicry). Dice snakes are nonvenemous natricine snakes that often live in sympatry with vipers. These snakes also have an ample arsenal of antipredator behavioural displays that include bluffing, characterized by hissing (auditory mimicry) with head flattening and fake strikes (visual mimicry). We measured the occurrence of bluffing displays in four different localities; on Golem Grad Island and in Konjsko (North Macedonia), where dice snakes share their habitat with nose-horned vipers (Vipera mmodytes) while in the other two localities, Mal Grad Island (Albania) and Pančevački rit Serbia), vipers are not present. We analysed the effect of locality, size (snout to vent length) nd sex on occurrence of bluffing as an antipredator strategy. Our results show that the ccurrence of bluffing was significantly affected by locality and body size. Notably, in the two localities where dice snakes share the same habitat with vipers the occurrence of bluffing displays is significantly higher than in the two localities where vipers are not present. This possibly indicates a case of Batesian mimicry, reported for the first time in dice snakes. Additionaly, our analysis shows that the predicted probabilities of the occurrence of bluffing increased with size. This seems intuitive, as bluffing behaviours should have a certain size threshold when they become effective, since small snakes can be easily consumed.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Barking Dogs Never Bite: Bluffing behaviour in dice snakes (Natrix tessellata)",
pages = "117",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5275"
}

Bjelica, V., Anđelković, M., Lakušić, M., Maričić, M., Arsovski, D., Tomović, L.,& Golubović, A.. (2022). Barking Dogs Never Bite: Bluffing behaviour in dice snakes (Natrix tessellata). in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 117.
https://hdl.handle.net/21.15107/rcub_ibiss_5275

Bjelica V, Anđelković M, Lakušić M, Maričić M, Arsovski D, Tomović L, Golubović A. Barking Dogs Never Bite: Bluffing behaviour in dice snakes (Natrix tessellata). in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;:117.
https://hdl.handle.net/21.15107/rcub_ibiss_5275 .

Bjelica, Vukašin, Anđelković, Marko, Lakušić, Margareta, Maričić, Marko, Arsovski, Dragan, Tomović, Ljiljana, Golubović, Ana, "Barking Dogs Never Bite: Bluffing behaviour in dice snakes (Natrix tessellata)" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia (2022):117,
https://hdl.handle.net/21.15107/rcub_ibiss_5275 .

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  - 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  - Golubović, Ana
AU  - Anđelković, Marko
AU  - Arsovski, Dragan
AU  - Bonnet, Xavier
AU  - Tomović, Ljiljana
PY  - 2017
UR  - http://link.springer.com/10.1007/s00265-017-2318-0
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2759
AB  - Physical limits of speed performances impose strong selective pressures on animals, influencing important functions such as predator avoidance and foraging success. Armoured herbivorous species such as tortoises represent a peculiar case: features that optimise encounter rate during reproduction, the ability to reach favourable sites for thermoregulation and resting, foraging or nesting sites may be more important than running speed. To explore this issue, we measured three characteristics related to travelling ability but that are independent of running speed: (1) muscular strength, (2) time needed for overturning and (3) jumping from a high step as proxies of the ability to overcome various obstacles. Additionally, reaction times in tortoises placed in a normal or overturned position were measured as a proxy of antipredator response. More than 400 adult Hermann’s tortoises from six populations were tested in the field during two seasons. Measures of travelling ability and antipredator response varied markedly among populations, and thus with environmental characteristics such as habitat type, terrain ruggedness and presence of predators. Tortoises from rugged and hot habitats (e.g. Mediterranean macchia) were the most successful and the fastest to accomplish the tests. Overturned tortoises were more reluctant to start moving compared to those in normal position, but this effect was absent in the two localities free from predators. Sex and season had limited effect on the measured performances. Overall, locomotor features essentially varied with environmental constraints. Future environmental studies should explore whether the observed differences among populations are linked to genetic adaptation or phenotypic plasticity. Significance statement: Locomotor performances crucially influence habitat use, foraging and reproductive success, thus directly affecting individual fitness. Although running speed is often considered as a main indicator of agility, in armoured terrestrial vertebrates some other agility components might be more important. Heavy, rigid armour imposes trade-off between protection of soft body parts and locomotor performances and consequently habitat use. This study compiles three tests of locomotor performance which might be important for overcoming various obstacles present in mosaic habitats of tortoises. Testing adult Hermann’s tortoises from six populations with various habitat characteristics, we found significant inter-population differences. The ability of tortoises to complete the tests positively correlates with climatic conditions and topography of their habitats. Additionally, presence of predators in the habitats dramatically affects tortoise’s antipredator behaviour. Measured locomotor performances and antipredator behaviour showed surprisingly low level of sexual dimorphism.
T2  - Behavioral Ecology and Sociobiology
T1  - Locomotor performances reflect habitat constraints in an armoured species
IS  - 6
VL  - 71
DO  - 10.1007/s00265-017-2318-0
SP  - 93
EP  - 93
ER  - 

@article{
author = "Golubović, Ana and Anđelković, Marko and Arsovski, Dragan and Bonnet, Xavier and Tomović, Ljiljana",
year = "2017",
abstract = "Physical limits of speed performances impose strong selective pressures on animals, influencing important functions such as predator avoidance and foraging success. Armoured herbivorous species such as tortoises represent a peculiar case: features that optimise encounter rate during reproduction, the ability to reach favourable sites for thermoregulation and resting, foraging or nesting sites may be more important than running speed. To explore this issue, we measured three characteristics related to travelling ability but that are independent of running speed: (1) muscular strength, (2) time needed for overturning and (3) jumping from a high step as proxies of the ability to overcome various obstacles. Additionally, reaction times in tortoises placed in a normal or overturned position were measured as a proxy of antipredator response. More than 400 adult Hermann’s tortoises from six populations were tested in the field during two seasons. Measures of travelling ability and antipredator response varied markedly among populations, and thus with environmental characteristics such as habitat type, terrain ruggedness and presence of predators. Tortoises from rugged and hot habitats (e.g. Mediterranean macchia) were the most successful and the fastest to accomplish the tests. Overturned tortoises were more reluctant to start moving compared to those in normal position, but this effect was absent in the two localities free from predators. Sex and season had limited effect on the measured performances. Overall, locomotor features essentially varied with environmental constraints. Future environmental studies should explore whether the observed differences among populations are linked to genetic adaptation or phenotypic plasticity. Significance statement: Locomotor performances crucially influence habitat use, foraging and reproductive success, thus directly affecting individual fitness. Although running speed is often considered as a main indicator of agility, in armoured terrestrial vertebrates some other agility components might be more important. Heavy, rigid armour imposes trade-off between protection of soft body parts and locomotor performances and consequently habitat use. This study compiles three tests of locomotor performance which might be important for overcoming various obstacles present in mosaic habitats of tortoises. Testing adult Hermann’s tortoises from six populations with various habitat characteristics, we found significant inter-population differences. The ability of tortoises to complete the tests positively correlates with climatic conditions and topography of their habitats. Additionally, presence of predators in the habitats dramatically affects tortoise’s antipredator behaviour. Measured locomotor performances and antipredator behaviour showed surprisingly low level of sexual dimorphism.",
journal = "Behavioral Ecology and Sociobiology",
title = "Locomotor performances reflect habitat constraints in an armoured species",
number = "6",
volume = "71",
doi = "10.1007/s00265-017-2318-0",
pages = "93-93"
}

Golubović, A., Anđelković, M., Arsovski, D., Bonnet, X.,& Tomović, L.. (2017). Locomotor performances reflect habitat constraints in an armoured species. in Behavioral Ecology and Sociobiology, 71(6), 93-93.
https://doi.org/10.1007/s00265-017-2318-0

Golubović A, Anđelković M, Arsovski D, Bonnet X, Tomović L. Locomotor performances reflect habitat constraints in an armoured species. in Behavioral Ecology and Sociobiology. 2017;71(6):93-93.
doi:10.1007/s00265-017-2318-0 .

Golubović, Ana, Anđelković, Marko, Arsovski, Dragan, Bonnet, Xavier, Tomović, Ljiljana, "Locomotor performances reflect habitat constraints in an armoured species" in Behavioral Ecology and Sociobiology, 71, no. 6 (2017):93-93,
https://doi.org/10.1007/s00265-017-2318-0 . .

TY  - JOUR
AU  - Arsovski, Dragan
AU  - Ajtić, Rastko
AU  - Golubović, Ana
AU  - Trajčeska, Ivona
AU  - Đorđević, Sonja
AU  - Anđelković, Marko
AU  - Bonnet, Xavier
AU  - Tomović, Ljiljana
PY  - 2014
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5151
PB  - Centre for Biodiversity of Montenegro
T2  - Ecologica Montenegrina
T1  - Two fangs good, a hundred legs better: juvenile viper devoured by an adult centipede it had ingested
VL  - 1
SP  - 6
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5151
ER  - 

@article{
author = "Arsovski, Dragan and Ajtić, Rastko and Golubović, Ana and Trajčeska, Ivona and Đorđević, Sonja and Anđelković, Marko and Bonnet, Xavier and Tomović, Ljiljana",
year = "2014",
publisher = "Centre for Biodiversity of Montenegro",
journal = "Ecologica Montenegrina",
title = "Two fangs good, a hundred legs better: juvenile viper devoured by an adult centipede it had ingested",
volume = "1",
pages = "6-8",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5151"
}

Arsovski, D., Ajtić, R., Golubović, A., Trajčeska, I., Đorđević, S., Anđelković, M., Bonnet, X.,& Tomović, L.. (2014). Two fangs good, a hundred legs better: juvenile viper devoured by an adult centipede it had ingested. in Ecologica Montenegrina
Centre for Biodiversity of Montenegro., 1, 6-8.
https://hdl.handle.net/21.15107/rcub_ibiss_5151

Arsovski D, Ajtić R, Golubović A, Trajčeska I, Đorđević S, Anđelković M, Bonnet X, Tomović L. Two fangs good, a hundred legs better: juvenile viper devoured by an adult centipede it had ingested. in Ecologica Montenegrina. 2014;1:6-8.
https://hdl.handle.net/21.15107/rcub_ibiss_5151 .

Arsovski, Dragan, Ajtić, Rastko, Golubović, Ana, Trajčeska, Ivona, Đorđević, Sonja, Anđelković, Marko, Bonnet, Xavier, Tomović, Ljiljana, "Two fangs good, a hundred legs better: juvenile viper devoured by an adult centipede it had ingested" in Ecologica Montenegrina, 1 (2014):6-8,
https://hdl.handle.net/21.15107/rcub_ibiss_5151 .

TY  - JOUR
AU  - Golubovic, Ana
AU  - Anđelković, Marko
AU  - Arsovski, Dragan
AU  - Vujovic, Ana
AU  - Ikovic, Vuk
AU  - Djordjevic, Sonja
AU  - Tomovic, Ljiljana
PY  - 2014
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2154
AB  - Dense vegetation cover undoubtedly offers certain advantages for small
   and slow-moving animals, but its disadvantages concerning some aspects
   of spatial ecology (e.g. movements) were neglected in previous studies.
   Tortoises could get stuck in vegetation by protuberant part of the shell
   and thus succumb to overheating, dehydration or predators. To examine
   how vegetation cover shapes behavioural responses of `trapped'
   tortoises, we tested adults of six populations from habitats with
   contrasting vegetation cover. The tortoises were fitted with a
   non-stretchable rope, representing a piece of vegetation, stuck on the
   protruding front part of the plastron. Results suggested the existence
   of two distinct releasing techniques. First, and only successful in this
   study, is frequent changing of the movement direction, with a minimal
   pulling force, until the obstacle detached. The other involved the
   maximal pulling force aimed at ripping out the constraint. Tortoises
   from shrub habitats had more releasing success, used less pulling force
   and needed shorter time period to release, contrary to tortoises from
   herbaceous habitats. Although sexes showed similar releasing success,
   females obtained lower number of direction changes and higher yanking
   force compared to males, suggesting slightly different liberating
   strategies between the sexes. For immobilized tortoises without suitable
   shelter from overheating and dehydration, appropriate behavioural
   response could be vital, especially during drought years, due to
   increased physiological stresses. Variability of behavioural patterns
   among tortoise populations, described in this study, could have an
   adaptive significance.
T2  - Acta Ethologica
T1  - Skills or strength-how tortoises cope with dense vegetation?
IS  - 3
VL  - 17
DO  - 10.1007/s10211-013-0171-3
SP  - 141
EP  - 147
ER  - 

@article{
author = "Golubovic, Ana and Anđelković, Marko and Arsovski, Dragan and Vujovic, Ana and Ikovic, Vuk and Djordjevic, Sonja and Tomovic, Ljiljana",
year = "2014",
abstract = "Dense vegetation cover undoubtedly offers certain advantages for small
   and slow-moving animals, but its disadvantages concerning some aspects
   of spatial ecology (e.g. movements) were neglected in previous studies.
   Tortoises could get stuck in vegetation by protuberant part of the shell
   and thus succumb to overheating, dehydration or predators. To examine
   how vegetation cover shapes behavioural responses of `trapped'
   tortoises, we tested adults of six populations from habitats with
   contrasting vegetation cover. The tortoises were fitted with a
   non-stretchable rope, representing a piece of vegetation, stuck on the
   protruding front part of the plastron. Results suggested the existence
   of two distinct releasing techniques. First, and only successful in this
   study, is frequent changing of the movement direction, with a minimal
   pulling force, until the obstacle detached. The other involved the
   maximal pulling force aimed at ripping out the constraint. Tortoises
   from shrub habitats had more releasing success, used less pulling force
   and needed shorter time period to release, contrary to tortoises from
   herbaceous habitats. Although sexes showed similar releasing success,
   females obtained lower number of direction changes and higher yanking
   force compared to males, suggesting slightly different liberating
   strategies between the sexes. For immobilized tortoises without suitable
   shelter from overheating and dehydration, appropriate behavioural
   response could be vital, especially during drought years, due to
   increased physiological stresses. Variability of behavioural patterns
   among tortoise populations, described in this study, could have an
   adaptive significance.",
journal = "Acta Ethologica",
title = "Skills or strength-how tortoises cope with dense vegetation?",
number = "3",
volume = "17",
doi = "10.1007/s10211-013-0171-3",
pages = "141-147"
}

Golubovic, A., Anđelković, M., Arsovski, D., Vujovic, A., Ikovic, V., Djordjevic, S.,& Tomovic, L.. (2014). Skills or strength-how tortoises cope with dense vegetation?. in Acta Ethologica, 17(3), 141-147.
https://doi.org/10.1007/s10211-013-0171-3

Golubovic A, Anđelković M, Arsovski D, Vujovic A, Ikovic V, Djordjevic S, Tomovic L. Skills or strength-how tortoises cope with dense vegetation?. in Acta Ethologica. 2014;17(3):141-147.
doi:10.1007/s10211-013-0171-3 .

Golubovic, Ana, Anđelković, Marko, Arsovski, Dragan, Vujovic, Ana, Ikovic, Vuk, Djordjevic, Sonja, Tomovic, Ljiljana, "Skills or strength-how tortoises cope with dense vegetation?" in Acta Ethologica, 17, no. 3 (2014):141-147,
https://doi.org/10.1007/s10211-013-0171-3 . .

TY  - CONF
AU  - Golubović, Ana
AU  - Anđelković, Marko
AU  - Arsovski, Dragan
AU  - Đorđević, Sonja
AU  - Iković, Vuk
AU  - Vujović, Ana
AU  - Bonnet, Xavier
AU  - Tomović, Ljiljana
PY  - 2013
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5210
AB  - During 200 million years of evolutionary history, all chelonians are characterized by a well
developed, protective shell. Conserved during major evolutionary transitions (e.g. return to
the sea), shell likely provides substantial selective advantages. Conversely, heavy and rigid
shell poses a set of serious motion limitations, especially in terrestrial species during displacements
in rugged and complex environments. We examined how terrestrial tortoises overcome
various obstacles in their natural habitat. We compared several Balkan populations of
Hermann’s tortoises by placing individuals (app. 1100) in three types of challenging positions
to measure their performances.
Righting ability: males were more successful in righting themselves than females. Body size
influenced righting abilities only in females: smaller ones were more efficient. Individuals
with markedly domed carapace (increased instability) and shorter bridges (enlarging space for
leg movements) were more successful to right themselves.
Boldness to cross a steep step: animals from rugged environment were more prone to jump
from 50 cm high obstacle then ones from the flat habitat. Genders had similar success,
but adults showed more boldness to leap off the hedge than juveniles.
Disentangling themselves form thick vegetation: residents of Mediterranean macchia displayed
moderate pulling force and released themselves quickly by backwards movements.
Tortoises living in herbaceous habitats moved forward, deployed strong pulling force, ripping
on the substrate and were far less successful.
Individuals from different habitats, sex and age classes exhibited divergent and apparently
appropriate traits and strategies to overcome each locomotory challenge. We further speculate
that behavioural responses, as a response to morphological constraints, are shaped by
experience. These results may have conservation value and assist in improving translocation
strategies for endangered tortoise populations.
PB  - University of Pannonia
C3  - Programme and Abstracts: 17th European Congress of Herpetology; 2013 Aug 22-27; Veszprém, Hungary
T1  - Tortoise’s shell—a blessing and a curse. How tortoises cope with various obstacles?
SP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5210
ER  - 

@conference{
author = "Golubović, Ana and Anđelković, Marko and Arsovski, Dragan and Đorđević, Sonja and Iković, Vuk and Vujović, Ana and Bonnet, Xavier and Tomović, Ljiljana",
year = "2013",
abstract = "During 200 million years of evolutionary history, all chelonians are characterized by a well
developed, protective shell. Conserved during major evolutionary transitions (e.g. return to
the sea), shell likely provides substantial selective advantages. Conversely, heavy and rigid
shell poses a set of serious motion limitations, especially in terrestrial species during displacements
in rugged and complex environments. We examined how terrestrial tortoises overcome
various obstacles in their natural habitat. We compared several Balkan populations of
Hermann’s tortoises by placing individuals (app. 1100) in three types of challenging positions
to measure their performances.
Righting ability: males were more successful in righting themselves than females. Body size
influenced righting abilities only in females: smaller ones were more efficient. Individuals
with markedly domed carapace (increased instability) and shorter bridges (enlarging space for
leg movements) were more successful to right themselves.
Boldness to cross a steep step: animals from rugged environment were more prone to jump
from 50 cm high obstacle then ones from the flat habitat. Genders had similar success,
but adults showed more boldness to leap off the hedge than juveniles.
Disentangling themselves form thick vegetation: residents of Mediterranean macchia displayed
moderate pulling force and released themselves quickly by backwards movements.
Tortoises living in herbaceous habitats moved forward, deployed strong pulling force, ripping
on the substrate and were far less successful.
Individuals from different habitats, sex and age classes exhibited divergent and apparently
appropriate traits and strategies to overcome each locomotory challenge. We further speculate
that behavioural responses, as a response to morphological constraints, are shaped by
experience. These results may have conservation value and assist in improving translocation
strategies for endangered tortoise populations.",
publisher = "University of Pannonia",
journal = "Programme and Abstracts: 17th European Congress of Herpetology; 2013 Aug 22-27; Veszprém, Hungary",
title = "Tortoise’s shell—a blessing and a curse. How tortoises cope with various obstacles?",
pages = "115",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5210"
}

Golubović, A., Anđelković, M., Arsovski, D., Đorđević, S., Iković, V., Vujović, A., Bonnet, X.,& Tomović, L.. (2013). Tortoise’s shell—a blessing and a curse. How tortoises cope with various obstacles?. in Programme and Abstracts: 17th European Congress of Herpetology; 2013 Aug 22-27; Veszprém, Hungary
University of Pannonia., 115.
https://hdl.handle.net/21.15107/rcub_ibiss_5210

Golubović A, Anđelković M, Arsovski D, Đorđević S, Iković V, Vujović A, Bonnet X, Tomović L. Tortoise’s shell—a blessing and a curse. How tortoises cope with various obstacles?. in Programme and Abstracts: 17th European Congress of Herpetology; 2013 Aug 22-27; Veszprém, Hungary. 2013;:115.
https://hdl.handle.net/21.15107/rcub_ibiss_5210 .

Golubović, Ana, Anđelković, Marko, Arsovski, Dragan, Đorđević, Sonja, Iković, Vuk, Vujović, Ana, Bonnet, Xavier, Tomović, Ljiljana, "Tortoise’s shell—a blessing and a curse. How tortoises cope with various obstacles?" in Programme and Abstracts: 17th European Congress of Herpetology; 2013 Aug 22-27; Veszprém, Hungary (2013):115,
https://hdl.handle.net/21.15107/rcub_ibiss_5210 .

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  - Golubović, Ana
AU  - Arsovski, Dragan
AU  - Ajtić, Rastko D
AU  - Tomović, Ljiljana M
AU  - Bonnet, Xavier
PY  - 2013
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/653
AB  - Despite exhibiting low velocity and limited agility, many tortoises undertake large scale movements and must overcome various obstacles, notably in populations living in hilly or rocky habitats. Although crucial, studies exploring how tortoises move in complex and irregular environments are scarce. In this context, we examined an important behavioural trait: how tortoises (Testudo hermanni) deal with step-like obstacles. In their natural habitat, individuals were positioned in a challenging situation: they were placed on a bench approximately 50cm high, and were observed over a 10-min period. We compared the behaviour of the tortoises (taking a risk to jump' or waiting) from two populations living in contrasted habitats: flat versus rugged (crisscrossed by cliffs and rocky steps). Individuals from the flat habitat were reluctant to jump, whereas most tortoises from the rugged habitat jumped. Immature tortoises were less willing to jump compared to larger and more experienced adults. These results suggest that challenging habitats increase boldness. In addition to fundamental findings, these results may have conservation value and assist in improving translocation strategies for endangered tortoise populations.(c) 2013 The Linnean Society of London
T2  - Biological Journal of the Linnean Society
T1  - Moving in the real world: tortoises take the plunge to cross steep steps
IS  - 4
VL  - 108
SP  - null
EP  - 726
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_653
ER  - 

@article{
author = "Golubović, Ana and Arsovski, Dragan and Ajtić, Rastko D and Tomović, Ljiljana M and Bonnet, Xavier",
year = "2013",
abstract = "Despite exhibiting low velocity and limited agility, many tortoises undertake large scale movements and must overcome various obstacles, notably in populations living in hilly or rocky habitats. Although crucial, studies exploring how tortoises move in complex and irregular environments are scarce. In this context, we examined an important behavioural trait: how tortoises (Testudo hermanni) deal with step-like obstacles. In their natural habitat, individuals were positioned in a challenging situation: they were placed on a bench approximately 50cm high, and were observed over a 10-min period. We compared the behaviour of the tortoises (taking a risk to jump' or waiting) from two populations living in contrasted habitats: flat versus rugged (crisscrossed by cliffs and rocky steps). Individuals from the flat habitat were reluctant to jump, whereas most tortoises from the rugged habitat jumped. Immature tortoises were less willing to jump compared to larger and more experienced adults. These results suggest that challenging habitats increase boldness. In addition to fundamental findings, these results may have conservation value and assist in improving translocation strategies for endangered tortoise populations.(c) 2013 The Linnean Society of London",
journal = "Biological Journal of the Linnean Society",
title = "Moving in the real world: tortoises take the plunge to cross steep steps",
number = "4",
volume = "108",
pages = "null-726",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_653"
}

Golubović, A., Arsovski, D., Ajtić, R. D., Tomović, L. M.,& Bonnet, X.. (2013). Moving in the real world: tortoises take the plunge to cross steep steps. in Biological Journal of the Linnean Society, 108(4), null-726.
https://hdl.handle.net/21.15107/rcub_ibiss_653

Golubović A, Arsovski D, Ajtić RD, Tomović LM, Bonnet X. Moving in the real world: tortoises take the plunge to cross steep steps. in Biological Journal of the Linnean Society. 2013;108(4):null-726.
https://hdl.handle.net/21.15107/rcub_ibiss_653 .

Golubović, Ana, Arsovski, Dragan, Ajtić, Rastko D, Tomović, Ljiljana M, Bonnet, Xavier, "Moving in the real world: tortoises take the plunge to cross steep steps" in Biological Journal of the Linnean Society, 108, no. 4 (2013):null-726,
https://hdl.handle.net/21.15107/rcub_ibiss_653 .

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 .