eCite Digital Repository
Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme
Citation
White, CR and Alton, LA and Frappell, PB, Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme, Royal Society of London. Proceedings B. Biological Sciences, 279, (1734) pp. 1740-1747. ISSN 0962-8452 (2012) [Refereed Article]
![]() | PDF Restricted - Request a copy 243Kb |
Copyright Statement
Copyright 2011 The Royal Society
DOI: doi:10.1098/rspb.2011.2060
Abstract
Metabolic cold adaptation (MCA), the hypothesis that species from cold climates have relatively higher
metabolic rates than those from warm climates, was first proposed nearly 100 years ago and remains
one of the most controversial hypotheses in physiological ecology. In the present study, we test the MCA
hypothesis in fishes at the level of whole animal, mitochondria and enzyme. In support of the MCA hypothesis, we find that when normalized to a common temperature, species with ranges that extend to high
latitude (cooler climates) have high aerobic enzyme (citrate synthase) activity, high rates of mitochondrial
respiration and high standard metabolic rates. Metabolic compensation for the global temperature gradient
is not complete however, so when measured at their habitat temperature species from high latitude have
lower absolute rates of metabolism than species from low latitudes. Evolutionary adaptation and thermal
plasticity are therefore insufficient to completely overcome the acute thermodynamic effects of temperature,
at least in fishes.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | metabolic cold adaptation, MCA, metabolic rate, climate, plasticity, citrate synthase, mitochondria, physiological ecology, mitochondrial respiration, metabolic compensation, global temperature gradient, |
Research Division: | Biological Sciences |
Research Group: | Biochemistry and cell biology |
Research Field: | Cell metabolism |
Objective Division: | Environmental Management |
Objective Group: | Management of Antarctic and Southern Ocean environments |
Objective Field: | Assessment and management of Antarctic and Southern Ocean ecosystems |
UTAS Author: | Frappell, PB (Professor Peter Frappell) |
ID Code: | 76089 |
Year Published: | 2012 |
Web of Science® Times Cited: | 99 |
Deposited By: | Zoology |
Deposited On: | 2012-02-27 |
Last Modified: | 2017-11-01 |
Downloads: | 0 |
Repository Staff Only: item control page