Maturation of the pineal melatonin rhythm in long- and short-day reared Djungarian hamsters |
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| Authors: | S M Yellon L Tamarkin B D Goldman |
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| Institution: | (1) Department of Biobehavioral Sciences, The University of Connecticut, 06268 Storrs, Connecticut, USA;(2) National Institute of Child Health and Human Development, National Institutes of Health, 20205 Bethesda, Maryland, USA;(3) Present address: Department of Physiology, Division of Perinatal Biology, Loma Linda University School of Medecine, 92350 Loma Linda, California, USA;(4) Present address: Worcester Foundation for Experimental Biology, 222 Maple Ave., 01545 Shrewsbury, Massachusetts, USA |
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| Abstract: | Summary Male Djungarian hamsters, reared under long (16L/8D) or short (10L/14D) days, were sacrificed at various ages during the day or night, or at night following a 30-min light pulse. The pineal melatonin rhythm matured similarly under long and short days by 20 days of age. The results are discussed in context of the hypothesis that melatonin mediates the photoperiod effects which forestall puberty in short-day reared hamsters.Supported by NIH research grant HD-05481. |
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| Keywords: | Hamster Djungarian melatonin rhythm pineal long-day rearing short-day rearing |
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