Search Results
You are looking at 1 - 1 of 1 items for
- Author: DIANE P. REILLY x
- Refine by access: All content x
Search for other papers by C. L. RALPH in
Google Scholar
PubMed
Search for other papers by R. W. PELHAM in
Google Scholar
PubMed
Search for other papers by S. E. MACBRIDE in
Google Scholar
PubMed
Search for other papers by DIANE P. REILLY in
Google Scholar
PubMed
SUMMARY
The melatonin (N-acetyl-5-methoxytryptamine) content of the pineal body and serum of White Leghorn cockerels (Gallus domesticus) appears to vary cyclically, with a higher level of both found at the mid-point of the dark period than at the mid-point of the light period when the animals were kept in a diurnal light cycle. These rhythmic variations persisted, although with an apparently lower amplitude, when the animals were maintained in continuous darkness for 2 weeks. The oscillations appeared to be free-running, circadian rhythms and to be phase-locked with the locomotor activity rhythms of the individual birds studied.