Abstract
1. 1.|Oxygen consumption, phosphorylase a and isocitrate dehydrogenase activities of the hepatopancreas (HP) of Heterometrus fulvipes exhibited partial compensation when acclimated to 18 or 38°C from the control temperature (28°C). 2. 2.|Greater compensation from the initial rate to the stabilized rate, and faster acclimation time in enzyme activities after the acute increase to 38°C than after the decrease to 18°C indicates that the change to 38°C is less stressful. 3. 3.|Changes in metabolite concentrations and enzyme activities show the predominance of biosynthesis at low temperature; activity of the hexose monophosphate shunt predominates after cold acclimation and glycogenolysis, oxidative metabolism, gluconeogenesis and lipolysis predominates after warm acclimation. 4. 4.|The similarity in tissues—(HP in this study and pedipalp and heart muscles in earlier studies) and cellular-level compensations of different tissues to whole-animal compensation suggest that the compensatory ability of the whole-animal is reflected by the major metabolic tissues, and vice versa.
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