TY  - JOUR
AU  - Anđelković, Marko
AU  - Blagojević, Veljko
AU  - Tomović, Ljiljana
AU  - Ivanović, Ana
PY  - 2016
UR  - http://intor.torlakinstitut.com/handle/123456789/473
AB  - We examined the divergence in pileus shape and ontogenetic allometric changes in pileus shape in two closely related species of snakes - Natrix natrix and N. tessellata. These two species have similar ecology, but different microhabitat and diet preferences. We analysed the ontogenetic series from hatchlings to adults. Hatchlings of two species significantly diverged in pileus size and shape. At the adult stage, significant sexual dimorphism in pileus size and shape was found within both species. Adults of N. natrix and N. tessellata (females and males) diverged in pileus shape, but not in size. Allometric shape changes accounted for significant amount of variance in pileus shape among different age classes, and appear to be species- and sex-specific. Our results suggested that allometries of pileus shape are highly evolvable traits, which may result from natural selection for functional optimisation of head shape in Natricine species.
PB  - British Herpetol Soc, London
T2  - Herpetological Journal
T1  - Ontogeny of pileus shape in Natrix natrix and N. tessellata
EP  - 9
IS  - 1
SP  - 3
VL  - 26
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_2617
ER  - 

@article{
author = "Anđelković, Marko and Blagojević, Veljko and Tomović, Ljiljana and Ivanović, Ana",
year = "2016",
abstract = "We examined the divergence in pileus shape and ontogenetic allometric changes in pileus shape in two closely related species of snakes - Natrix natrix and N. tessellata. These two species have similar ecology, but different microhabitat and diet preferences. We analysed the ontogenetic series from hatchlings to adults. Hatchlings of two species significantly diverged in pileus size and shape. At the adult stage, significant sexual dimorphism in pileus size and shape was found within both species. Adults of N. natrix and N. tessellata (females and males) diverged in pileus shape, but not in size. Allometric shape changes accounted for significant amount of variance in pileus shape among different age classes, and appear to be species- and sex-specific. Our results suggested that allometries of pileus shape are highly evolvable traits, which may result from natural selection for functional optimisation of head shape in Natricine species.",
publisher = "British Herpetol Soc, London",
journal = "Herpetological Journal",
title = "Ontogeny of pileus shape in Natrix natrix and N. tessellata",
pages = "9-3",
number = "1",
volume = "26",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_2617"
}

Anđelković, M., Blagojević, V., Tomović, L.,& Ivanović, A.. (2016). Ontogeny of pileus shape in Natrix natrix and N. tessellata. in Herpetological Journal
British Herpetol Soc, London., 26(1), 3-9.
https://hdl.handle.net/21.15107/rcub_ibiss_2617

Anđelković M, Blagojević V, Tomović L, Ivanović A. Ontogeny of pileus shape in Natrix natrix and N. tessellata. in Herpetological Journal. 2016;26(1):3-9.
https://hdl.handle.net/21.15107/rcub_ibiss_2617 .

Anđelković, Marko, Blagojević, Veljko, Tomović, Ljiljana, Ivanović, Ana, "Ontogeny of pileus shape in Natrix natrix and N. tessellata" in Herpetological Journal, 26, no. 1 (2016):3-9,
https://hdl.handle.net/21.15107/rcub_ibiss_2617 .

TY  - JOUR
AU  - Sukalo, Goran
AU  - Đorđević, Sonja
AU  - Gvozdenović, Sladana
AU  - Simović, Aleksandar
AU  - Anđelković, Marko
AU  - Blagojević, Veljko
AU  - Tomović, Ljiljana
PY  - 2014
UR  - http://intor.torlakinstitut.com/handle/123456789/413
AB  - In aquatic and surrounding terrestrial ecosystems, snakes of the genus Natrix are among the top predators, feeding predominantly on fishes and amphibians, but also on other reptiles and small mammals. In the diets of Natrix natrix and N. tessellata, preferred food items vary geographically and during ontogeny. To understand these variations, we collected data on their diet composition in several habitats (river, wetlands, and two types of lakes), some of which are under severe anthropogenic pressures. Both Natrix species were able to quickly adapt to changes in available prey, and to feed even on non-indigenous, invasive, and potentially hazardous fish. Disturbed ecosystems are particularly susceptible to invasions. Therefore, if alien fishes become dominant, they may threaten populations of native snakes. On the other hand, semi-aquatic snakes can contribute to natural regulation of alien fish species abundance. The preliminary results presented herein emphasize the urgent need for integrative studies of natricine snakes and their prey ecology under various and/or dynamic circumstances. Better understanding of the functioning of different aquatic ecosystems may enable proper conservation and restoration for these snake species and their habitats.
PB  - Herpetological Conservation & Biology, Corvallis
T2  - Herpetological Conservation and Biology
T1  - Intra- and inter-population variability of food preferences of two natrix species on the Balkan peninsula
EP  - 136
IS  - 1
SP  - 123
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_2190
ER  - 

@article{
author = "Sukalo, Goran and Đorđević, Sonja and Gvozdenović, Sladana and Simović, Aleksandar and Anđelković, Marko and Blagojević, Veljko and Tomović, Ljiljana",
year = "2014",
abstract = "In aquatic and surrounding terrestrial ecosystems, snakes of the genus Natrix are among the top predators, feeding predominantly on fishes and amphibians, but also on other reptiles and small mammals. In the diets of Natrix natrix and N. tessellata, preferred food items vary geographically and during ontogeny. To understand these variations, we collected data on their diet composition in several habitats (river, wetlands, and two types of lakes), some of which are under severe anthropogenic pressures. Both Natrix species were able to quickly adapt to changes in available prey, and to feed even on non-indigenous, invasive, and potentially hazardous fish. Disturbed ecosystems are particularly susceptible to invasions. Therefore, if alien fishes become dominant, they may threaten populations of native snakes. On the other hand, semi-aquatic snakes can contribute to natural regulation of alien fish species abundance. The preliminary results presented herein emphasize the urgent need for integrative studies of natricine snakes and their prey ecology under various and/or dynamic circumstances. Better understanding of the functioning of different aquatic ecosystems may enable proper conservation and restoration for these snake species and their habitats.",
publisher = "Herpetological Conservation & Biology, Corvallis",
journal = "Herpetological Conservation and Biology",
title = "Intra- and inter-population variability of food preferences of two natrix species on the Balkan peninsula",
pages = "136-123",
number = "1",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_2190"
}

Sukalo, G., Đorđević, S., Gvozdenović, S., Simović, A., Anđelković, M., Blagojević, V.,& Tomović, L.. (2014). Intra- and inter-population variability of food preferences of two natrix species on the Balkan peninsula. in Herpetological Conservation and Biology
Herpetological Conservation & Biology, Corvallis., 9(1), 123-136.
https://hdl.handle.net/21.15107/rcub_ibiss_2190

Sukalo G, Đorđević S, Gvozdenović S, Simović A, Anđelković M, Blagojević V, Tomović L. Intra- and inter-population variability of food preferences of two natrix species on the Balkan peninsula. in Herpetological Conservation and Biology. 2014;9(1):123-136.
https://hdl.handle.net/21.15107/rcub_ibiss_2190 .

Sukalo, Goran, Đorđević, Sonja, Gvozdenović, Sladana, Simović, Aleksandar, Anđelković, Marko, Blagojević, Veljko, Tomović, Ljiljana, "Intra- and inter-population variability of food preferences of two natrix species on the Balkan peninsula" in Herpetological Conservation and Biology, 9, no. 1 (2014):123-136,
https://hdl.handle.net/21.15107/rcub_ibiss_2190 .