Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 13 June 1969:
Vol. 164. no. 3885, pp. 1290 - 1292
DOI: 10.1126/science.164.3885.1290
Prev | Table of Contents | Next

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 »


To Advertise     Find Products

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