Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme

White, Craig R., Alton, Lesley A. and Frappell, Peter B. (2012) Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme. Proceedings of the Royal Society of London: Biological Sciences, 279 1734: 1740-1747. doi:10.1098/rspb.2011.2060


Author White, Craig R.
Alton, Lesley A.
Frappell, Peter B.
Title Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme
Journal name Proceedings of the Royal Society of London: Biological Sciences   Check publisher's open access policy
ISSN 0962-8452
1471-2954
Publication date 2012-05-07
Year available 2011
Sub-type Article (original research)
DOI 10.1098/rspb.2011.2060
Open Access Status DOI
Volume 279
Issue 1734
Start page 1740
End page 1747
Total pages 8
Place of publication London, United Kingdom
Publisher The Royal Society Publishing
Language eng
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.
Keyword Metabolic cold adaptation
Metabolic rate
Climate
Plasticity
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID MC_U105674180
Institutional Status UQ
Additional Notes Published online before print December 7, 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
 
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