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Thermoregulation and Metabolism in Hypoxic Animals

1988; Springer Nature; Linguagem: Inglês

10.1007/978-1-4684-5481-9_32

2214-8019

R. Keith Dupré, Alejandra Romero, Stephen C. Wood,

Bat Biology and Ecology Studies

It is well established that altered body temperature (Tb) has an exponential effect on the oxygen consumption ( $${\dot V}$$ O2) of resting animals (Krogh, 1914). Alterations of Tb over a range larger than 20°C are routine for ectothermic vertebrates. The range of altered core Tb is smaller for homeotherms but is still significant in hyperthermia and hypothermia. In general, a l°C change in Tb causes an 11% change in metabolic rate (Q10 = 2.5). Consequently, fever or exercise-induced hyperthermia, will elevate oxygen demand and amplify the hypoxic stress of a mammal at high altitude or with cardiopulmonary disease. Conversely, hypothermia could be beneficial to any animal faced with a limited oxygen supply.