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Hibernation in a tropical primate

机译:在热带灵长类动物中冬眠

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The Madagascan fat-tailed dwarf lemur, Cheirogaleus medius, hibernates in tree holes for seven months of the year, even though winter temperatures rise to over 30℃. Here we show that this tropical primate relies on a flexible thermal response that depends on the properties of its tree hole: if the hole is poorly insulated, body temperature fluctuates widely, passively following the ambient temperature; if well insulated, body temperature stays fairly constant and the animal undergoes regular spells of arousal. Our findings indicate that arousals are determined by maximum body temperatures and that hypometabolism in hibernating animals is not necessarily coupled to a low body temperature.
机译:马达加斯加的肥尾侏儒狐猴,Cheirogaleus medius,一年中七个月都在树洞中冬眠,即使冬天的温度上升到30摄氏度以上。在这里,我们表明,这种热带灵长类动物依赖于灵活的热响应,而该热响应取决于其树洞的性质:如果树洞的绝缘性差,则人体温度会随环境温度的变化而被动地波动。如果绝缘良好,则体温保持相当恒定,并且动物会定期进行唤醒。我们的发现表明,唤醒是由最高体温决定的,而处于冬眠状态的动物体内的低代谢并不一定与体温低有关。

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