Journal
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
Volume 132, Issue 4, Pages 789-795Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S1095-6433(02)00048-X
Keywords
metabolic cold adaptation; metabolism; oxygen consumption; polar; Arctic; Antarctic; standard metabolic rate
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Whether metabolic cold adaptation in polar fish, based on measurements of aerobic standard metabolic rate, is a fact or an artefact has been a dispute since Holeton asked the question in 1974. So far polar fish had been considered to be metabolically cold adapted because they were reported to have a considerably elevated resting oxygen consumption, or standard metabolic rate, compared with oxygen consumption values of tropical or temperate fish extrapolated to similar low polar temperatures. Recent experiments on arctic and Antarctic fish, however, do not show elevated resting aerobic oxygen consumption values, or standard metabolic rate, and hence it is concluded that that metabolic cold adaptation in the traditional sense is an artefact. (C) 2002 Elsevier Science Inc. All rights reserved.
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