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Photoperiodism in the lizard,Anolis carolinensis

✍ Scribed by Ferrell, Blaine R.

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 828 KB
Volume: 232
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402320104

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✦ Synopsis

A daily rhythm of testicular photosensitivity entrained by the photoperiod of 10L:14D (1ight:dark) was detected in lizards at 30°C but not at 20°C. Testicular development in anoles at 30°C was stimulated by a 1-hour light interruption occurring 16.5 hours (Experiment I) or 20 (Experiment 11) after the onset of the daily photoperiod. Light interruptions occurring at other times of night tested were not stimulatory. Photoperiodism in this reptile appears to involve circadian mechanisms similar to those that have been described for members of other vertebrate classes. The expression of physiological events regulated by these mechanisms is temperature dependent.

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