O'Reilly H, Armstrong S M, Coleman G J
Physiol Behav. 1986 Oct;38(4):471-6. doi: 10.1016/0031-9384(86)90413-0.
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 indicated by occurrences of relative coordination. This species does not appear to have a dominance hierarchy of zeitgebern different to that reported for laboratory rodents. One would have predicted that it would have been ecologically adaptive for cycles of food availability to be more important than the LD cycle in this species.
关于食物可获得性是否会影响杂食性实验啮齿动物的昼夜活动节律，存在相当大的分歧。然而，在肉食性哺乳动物中，限制进食制度可能充当一个 Zeitgeber（授时因子），因为捕食者的周期应该与猎物的周期相关。尽管如此，限制进食时间表并不主导夜间捕食者拜氏袋鼬（Dasyuroides byrnei）昼夜活动节律的光暗周期（LD cycle）的同步，也不能使它在持续黑暗（DD）中同步自由活动节律。在大多数动物中都观察到了在食物可获得之前的预期性转轮行为。相对协调性的出现表明了一些关于光暗周期（LD）同步的振荡器和与进食相关的振荡器之间弱耦合的证据。与实验室啮齿动物所报道的情况不同，这个物种似乎没有不同授时因子的优势等级。人们可能会预测，对于这个物种来说，食物可获得性的周期比光暗周期更重要在生态上是适应性的。
