earticle

영어

Different thermoregulatory optima may exist even between sympatric species. In this study, we investigated daily activity pattern and thermoregulation in two cohabiting colubrid snakes, diurnal Dione's ratsnake (Elaphe dione) and nocturnal Red-banded snake (Dinodon rufozonatum) which have different observational patterns although their ecological and morphological traits are very similar. To elucidate the daily activity pattern and thermoregulation of the two species, we video-monitored 6 E. dione (♂: 3, ♀: 3) and 6 D. rufozonatum (♂: 3, ♀: 3) in an experimental vivarium between June 10 and 25, 2014. Snake body temperature were simultaneously measured by insertion a temperature hobo into the cloaca to determine the relationship between air and body temperature. Elaphe dione moved throughout a day while D. rufozonatum mainly moved between 8pm-6am, a night time. Dinodon rufozonatum had a higher Te-Tb value (operational environmental temperature - body temperature) as 0.76℃ than 0.65℃ of E. dione. While, the daily average body temperature (24.1℃) of D. rufozonatum was not different with that of E. dione (23.8℃).