HEAT REGULATION AND METABOLISM IN SOME TROPICAL MAMMALS AND BIRDS
HEAT REGULATION AND METABOLISM IN SOME TROPICAL MAMMALS AND BIRDS
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DOI：
10.1111/j.1748-1716.1957.tb01485.x
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发表时间：
1957-01-01
期刊：
影响因子：
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通讯作者：
ENGER, PS
中科院分区：
文献类型：
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作者：
ENGER, PS
巴拿马的五种热带哺乳动物和三种高空飞翔的鸟类经历了不同的空气温度，它们的产热取决于二氧化碳的产生。老鼠和松鼠是很好的温度调节器，临界温度约为27° C，而负鼠，犰狳和三趾树懒是糟糕的调节器。这些鸟的临界温度相对较低，约为24° C（秃鹫）和20° C（军舰鸟），这可能反映了它们在高海拔冷空气中翱翔的习惯。在亚临界温度下，哺乳动物和鸟类的新陈代谢都随着温度的降低而增加，或多或少接近牛顿冷却定律。小鼠、松鼠和负鼠的静息代谢率符合标准的小鼠-大象曲线。Xenarthra亚目哺乳动物（食蚁兽、树懒、犰狳）和三种鸟类的代谢率相对较低。
Five species of tropical mammals and three species of high soaring birds in Panama have been subjected to various air temperatures and their heat production was determined by the carbon dioxide production. The mouse and the squirrel were good thermoregulators with a critical temperature of about 27° C, whereas the opossum, armadillo and three‐toed sloth were bad regulators. The birds have relatively low critical temperatures, about 24° (vultures) and 20° C (frigate‐bird), which may reflect their habit of soaring in cool air at high altitudes. At sub‐critical temperatures the metabolism in both mammals and birds increased with decreasing temperatures, more or less closely approaching Newton's law of cooling.The resting metabolic rates in mouse, squirrel and opossum were in accordance with the standard mouse to elephant curve. Mammals of the suborder Xenarthra (anteater, sloth, armadillo) and the three bird species had a relatively low metabolic rate.