Abstract
1. 1.|The time-course of acclimation in oxygen consumption was determined for the scorpion, Heterometrus fulvipes to the average winter (18°C) and summer (38°C) field temperatures at the whole-animal and tissue (pedipalpal and heart muscles) levels. 2. 2.|One hour after transfer to 18 or 38°C from 28°C whole-animal and tissue oxygen consumption showed initial shoot-down or initial shoot-up rates, respectively. 3. 3.|New stabilized rates of whole-animal and tissue consumption were attained after completion of acclimation conforming to the type-3 pattern of Precht (1958) [Precht (1958) Physiological Adaptation, pp. 50–78. American Physiological Society, Washington, D.C.]. Acclimation times for whole-animal and heart muscle showed an inverse relationship with acclimation temperature. 4. 4.|The higher relative change of whole-animal and tissue oxygen consumption acclimation suggests that a change to 18°C is more stressful than a change to 38°C.
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