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1 August 2014 Circadian and Temperature Control of Activity in Schlegel's Japanese Gecko, Gekko japonicus (Reptilia: Squamata: Gekkonidae)
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Abstract

The locomotor activity rhythm was examined under (1) constant darkness at 25C and (2) light-dark cycles (LD 12:12) at various temperatures ranging between 15 and 25C in adults of Gekko japonicus, a nocturnal lizard living in the temperate zone. The rhythm free-ran in constant darkness with a period of approximately 24 h, and thus the rhythm is controlled by a circadian clock. Gekko japonicus was more active at higher temperatures. Although there was a possibility that the activity distribution in photophase and scotophase in G. japonicus was affected by temperature, it showed nocturnal activity with a peak at 1–2 h after lights-off under LD 12:12 at all temperatures examined.

© 2014 by The Herpetological Society of Japan
Yuko Tawa, Teppei Jono, and Hideharu Numata "Circadian and Temperature Control of Activity in Schlegel's Japanese Gecko, Gekko japonicus (Reptilia: Squamata: Gekkonidae)," Current Herpetology 33(2), 121-128, (1 August 2014). https://doi.org/10.5358/hsj.33.121
Accepted: 1 May 2014; Published: 1 August 2014
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