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Science 13 June 1969:
Vol. 164. no. 3885, pp. 1290 - 1292
DOI: 10.1126/science.164.3885.1290
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Articles

Extraoptic Phase Shifting of Circadian Locomotor Rhythm in Salamanders

Kraig Adler 1

1 Department of Biology, University of Notre Danme, Notre Dame, Inadiana 46556

Timing of locomotor rhythm in the slimy ralamander, Plethodon glutinosus, can be shifted in phase by the environmental light cycle, whether the animals have eyes or not. Rhythmicity persists at least for the first day when animals are transferred to constant conditions, with a period of about 24 hours, and is therefore circadian in nature. An extraoptic photoreceptor site in the brain is suggested.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Photosensitivity of the Circadian Rhythm and of Visual Receptors in Carotenoid-Depleted Drosophila.
W. F. Zimmerman and T. H. Goldsmith (1971)
Science 171, 1167-1169
   Abstract »    PDF »
Extraretinal Light Perception: Entrainment of the Biological Clock Controlling Lizard Locomotor Activity.
H. Underwood and M. Menaker (1970)
Science 170, 190-193
   Abstract »    PDF »
Extraoptic Celestial Orientation in the Southern Cricket Frog Acris gryllus.
D. H. Taylor and D. E. Ferguson (1970)
Science 168, 390-392
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)