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 11 February 1977:
Vol. 195. no. 4278, pp. 587 - 589
DOI: 10.1126/science.835015
Prev | Table of Contents | Next

Articles

Science, Vol 195, Issue 4278, 587-589
Copyright © 1977 by American Association for the Advancement of Science

articles

Circadian organization in lizards: the role of the pineal organ

H Underwood

After pinealectomy, the iguanid lizard Sceloporus olivaceus exhibits a "splitting" of the circadian activity rhythm into two components, marked changes in the period of the rhythm, or arrhythmicity. These effects are consistent with either of two hypotheses: (i) The pineal organ is a coupling device between circadian oscillators in a multioscillator system, or (ii) the pineal organ is itself a master oscillator, which entrains other circadian oscillators and imposes its frequency upon them.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Period and Phase Control in a Multioscillatory Circadian System (Iguana Iguana).
P. A. Bartell, M. Miranda-Anaya, and M. Menaker (2004)
J Biol Rhythms 19, 47-57
   Abstract »    PDF »
Photoperiod Affects Amplitude but Not Duration of In Vitro Melatonin Production in the Ruin Lizard (Podarcis sicula).
C. Bertolucci, G. Wagner, A. Foa, E. Gwinner, and R. Brandstatter (2003)
J Biol Rhythms 18, 63-70
   Abstract »    PDF »
Circadian Rhythm of ERG in Iguana iguana: Role of the Pineal.
M. Miranda-Anaya, P. A. Bartell, S. Yamazaki, and M. Menaker (2000)
J Biol Rhythms 15, 163-171
   Abstract »    PDF »
Cellular Mechanisms of Melatonin Action.
J. VANECEK (1998)
Physiol Rev 78, 687-721
   Abstract »    Full Text »    PDF »
Seasonality and role of SCN in entrainment of lizard circadian rhythms to daily melatonin injections.
C. Bertolucci and A. Foa (1998)
Am J Physiol Regulatory Integrative Comp Physiol 274, R1004-R1014
   Abstract »    Full Text »    PDF »
Multioscillatory Circadian Organization in a Vertebrate, Iguana iguana.
G. Tosini and M. Menaker (1998)
J. Neurosci. 18, 1105-1114
   Abstract »    Full Text »    PDF »
Vertebrate Circadian and Photoperiodic Systems: Role of the Pineal Gland and Melatonin.
H. Underwood and B. D. Goldman (1987)
J Biol Rhythms 2, 279-315
   PDF »
Pineal Melatonin Rhythms in the Lizard Anolis carolinensis: II. Photoreceptive Inputs.
H. Underwood and M. Calaban (1987)
J Biol Rhythms 2, 195-206
   Abstract »    PDF »
Entrainment of Split Circadian Activity Rhythms in Hamsters.
Z. Boulos and L. P. Morin (1986)
J Biol Rhythms 1, 1-15
   PDF »
Splitting of the circadian rhythm of activity is abolished by unilateral lesions of the suprachiasmatic nuclei.
G. Pickard and F. Turek (1982)
Science 215, 1119-1121
   Abstract »    PDF »
Nonpineal melatonin in the alligator (Alligator mississippiensis).
J. Roth, W. Gern, E. Roth, C. Ralph, and E Jacobson (1980)
Science 210, 548-550
   Abstract »    PDF »


To Advertise     Find Products

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