Turning up the heat on subzero fish: thermal dependence of sustained swimming in an Antarctic notothenioid

Wilson, R. S., Kuchel, L. J., Franklin, C. E. and Davison, W. (2002) Turning up the heat on subzero fish: thermal dependence of sustained swimming in an Antarctic notothenioid. Journal of Thermal Biology, 27 5: 381-386. doi:10.1016/S0306-4565(02)00006-2


Author Wilson, R. S.
Kuchel, L. J.
Franklin, C. E.
Davison, W.
Title Turning up the heat on subzero fish: thermal dependence of sustained swimming in an Antarctic notothenioid
Journal name Journal of Thermal Biology   Check publisher's open access policy
ISSN 0306-4565
Publication date 2002-01-01
Year available 2002
Sub-type Article (original research)
DOI 10.1016/S0306-4565(02)00006-2
Open Access Status Not yet assessed
Volume 27
Issue 5
Start page 381
End page 386
Total pages 6
Place of publication Oxford, England
Publisher Pergamon-Elsevier Science Ltd.
Language eng
Subject C1
270604 Comparative Physiology
771103 Living resources (flora and fauna)
Abstract We determined the maximum sustained swimming speed (U-crit), and resting and maximum ventilation rates of the Antarctic fish Pagothenia borchgrevinki at five temperatures between -1degreesC and 8degreesC. We also determined resting metabolic rate (VO2) at -1degreesC, 2degreesC, and 4degreesC. U-crit of P. borchgrevinki was highest at -1degreesC (2.7+/-0.1 BL s(-1)) and rapidly decreased with temperature, representing a thermal performance breadth of only 5degreesC. This narrow thermal performance supports our prediction that specialisation to the subzero Antarctic marine environment is associated with a physiological trade-off in performance at high temperatures. Resting oxygen consumption and ventilation rate increased by more than 200% across the temperature range, which most likely contribute to the decrease in aerobic swimming capabilities at higher temperatures. (C) 2002 Published by Elsevier Science Ltd.
Keyword Biology
Zoology
Swimming Performance
Thermal Dependence
Pagothenia Borchgrevinki
Fish
Antarctic
Pagothenia-borchgrevinki
Performance
Temperatures
Sensitivity
Adaptation
Behavior
Ice
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Biological Sciences Publications
Ecology Centre Publications
 
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Created: Wed, 15 Aug 2007, 03:16:07 EST