Seasonal adjustments in captured wild Norway rats. II. Survival time, pelt insulation, shivering, and metabolic and pressor responses to noradrenaline.
Seasonal adjustments in captured wild Norway rats. II. Survival time, pelt insulation, shivering, and metabolic and pressor responses to noradrenaline.
复制标题
捕获的野生挪威大鼠的季节调整。
DOI：
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发表时间：
1962
期刊：
影响因子：
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通讯作者：
O. Héroux
中科院分区：
文献类型：
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作者：
O. Héroux
在冬季，野生大鼠（挪威鼠）的代谢调节与实验室中适应寒冷的白鼠相似。在冬季捕获的野生大鼠中发现的颤抖率低于夏季捕获的大鼠，这表明存在非颤抖产热。对去甲肾上腺素的代谢反应增强，这表明这些野生大鼠的非颤抖代谢，如在白鼠的情况下，是由去甲肾上腺素介导的。与在实验室中适应恒定低温的白鼠不同，但与在户外冬季环境中适应寒冷的白鼠不同，野生大鼠在冬天会形成更强的皮毛绝缘。
During the winter, wild rats (Rattus norwegicus) develop metabolic adjustments similar to those found in the white rats acclimated to cold in the laboratory. The rate of shivering found in the winter-captured wild rats is lower than that found in the summer-captured rats, indicating the presence of non-shivering thermogenesis. The metabolic response to noradrenaline is enhanced suggesting that non-shivering metabolism in these wild rats, as in the case of white rats, is mediated by noradrenaline. Unlike white rats acclimated to a constant cold temperature in the laboratory, but like white rats acclimatized to cold by group exposure to outdoor winter conditions, wild rats develop a greater pelt insulation in winter.