Torpor involves a number of physiological changes, especially related to body temperature, metabolism, and water balance. These physiological changes are interrelated
Figure 2 Pattern of body temperature during a seasonal hibernation cycle for a ground squirrel. Modified from Wang LCH (1978) Energetic and field aspects of mammalian torpor: The Richardson's ground squirrel. In: Wang LCH and Hudson JW (eds.) Strategies in Cold. Natural Torpidity and Thermogenesis, pp. 109-145. New York: Academic Press.
insofar as body temperature influences energetics, and water balance is related to both body temperature and metabolism. However, the detail of the physiological consequences of torpor differs between organisms.
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