substrate temperature

Comparative thermobiological characteristics of the dice snake Natrix tessellata (Laurenti, 1768) (Colubridae, Reptilia) from the Kama Cis-Urals, Middle and Lower Volga regions

Authors: Chetanov N. A., Litvinov N. A., Ganshchuk S. V., Galiulin D. M.

Since 2019, single individuals of the dice snake Natrix tessellata (Laurenti, 1768) have been repeatedly found in the Kama Cis-Urals. The lack of data on the thermobiology of the species in atypical conditions determined the purpose of this work – a comparison of the most important thermobiological characteristics of the water snake from the Lower and Middle Volga region, as well as the Kama Cis-Urals.

Some features of thermobiology of steppe-runner Eremias arguta (Gmelin, 1789) and spotted toadhead agama Phrynocephalus guttatus (Gmelin, 1789) (Squamata, Reptilia) in cohabitation in the Northern Pre-Caspian

Authors: Chetanov N. A., Litvinov N. A., Ganshchuk S. V., Yugov M. V.

The paper presents data on temperatures of the body and the selected substrate for the steppe-runner and the spotted toadhead agama. Thermal preferences and modal classes for both species were determined, and interspecies differences were analyzed. Significantly higher average temperatures were found in the steppe-runner, while the maximum voluntary temperatures are higher in the spotted toadhead agama. These features are associated with the biotopic confinement of species.