Journal article

RESTRICTED FEEDING AND CIRCADIAN ACTIVITY RHYTHMS OF A PREDATORY MARSUPIAL, DASYUROIDES-BYRNEI

H OREILLY, SM ARMSTRONG, GJ COLEMAN

Physiology & Behavior | PERGAMON-ELSEVIER SCIENCE LTD | Published : 1986

Abstract

There is considerable disagreement as to whether food availability entrains circadian activity rhythms in omnivorous laboratory rodents. However, in carnivorous mammals a restricted feeding regime could act as a zeitgeber because the predator should hold a periodism correlated to that of the prey. Nevertheless, a restricted feeding schedule does not dominate the LD cycle for entrainment of circadian activity rhythms of the nocturnal predator Dasyuroides byrnei, nor does it entrain the free-running activity rhythms in DD. Anticipatory wheel running prior to food availability was observed in most animals. Some evidence for weak coupling between LD-entrained and meal-associated oscillators was ..

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