Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway.
Centre for Saami Studies, UiT The Arctic University of Norway, Tromsø, Norway.
PLoS Biol. 2019 Jul 15;17(7):e3000360. doi: 10.1371/journal.pbio.3000360. eCollection 2019 Jul.
The evidence that diel patterns of physiology and behaviour in mammals are governed by circadian 'clocks' is based almost entirely on studies of nocturnal rodents. The emergent circadian paradigm, however, neglects the roles of energy metabolism and alimentary function (feeding and digestion) as determinants of activity pattern. The temporal control of activity varies widely across taxa, and ungulates, microtine rodents, and insectivores provide examples in which circadian timekeeping is vestigial. The nocturnal rodent/human paradigm of circadian organisation is unhelpful when considering the broader manifestation of activity patterns in mammals.
哺乳动物的生理和行为昼夜节律模式受昼夜“钟”控制的证据几乎完全基于对夜间活动的啮齿动物的研究。然而，新兴的昼夜节律范例忽略了能量代谢和营养功能（进食和消化）作为活动模式决定因素的作用。活动的时间控制在分类群中差异很大，有蹄类动物、小型啮齿动物和食虫动物就是昼夜节律计时功能退化的例子。当考虑哺乳动物活动模式的更广泛表现时，夜间活动的啮齿动物/人类的昼夜节律组织范例并没有帮助。
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