Abstract
Summary
Total body metabolism of Rana pipiens and Triturus viridescens was determined in animals acclimated to cold and warm environments. Those animals adjusted to cold had a higher oxygen uptake when measurements were made at an intermediate temperature. Thyroidectomy had no effect on respiratory metabolism of Triturus. Tissue metabolism of skeletal muscle and stomach had higher oxygen consumption when taken from cold acclimated (5°C) animals than when obtained from warm adjusted (25°C).
Liver showed no significant changes. Ventricle responded just the opposite from skeletal muscle and stomach. The wet/dry weight ratios of all 4 tissues did not change during acclimation.
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