Thermal dependence of cardiac function in arctic fish: implications of a warming world

Franklin, Craig E., Farrell, Anthony P., Altimiras, Jordi and Axelsson, Michael (2013) Thermal dependence of cardiac function in arctic fish: implications of a warming world. Journal of Experimental Biology, 216 22: 4251-4255. doi:10.1242/jeb.087130

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ318598_OA.pdf Full text (open access) application/pdf 269.61KB 0

Author Franklin, Craig E.
Farrell, Anthony P.
Altimiras, Jordi
Axelsson, Michael
Title Thermal dependence of cardiac function in arctic fish: implications of a warming world
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
1477-9145
Publication date 2013
Year available 2013
Sub-type Article (original research)
DOI 10.1242/jeb.087130
Open Access Status File (Publisher version)
Volume 216
Issue 22
Start page 4251
End page 4255
Total pages 5
Place of publication Cambridge, United Kingdom
Publisher The Company of Biologists Ltd.
Collection year 2014
Language eng
Subject 1103 Clinical Sciences
1105 Dentistry
1312 Molecular Biology
1314 Physiology
1109 Neurosciences
1104 Complementary and Alternative Medicine
Abstract With the Arctic experiencing one of the greatest and most rapid increases in sea temperatures in modern time, predicting how Arctic marine organisms will respond to elevated temperatures has become crucial for conservation biology. Here, we examined the thermal sensitivity of cardiorespiratory performance for three closely related species of sculpins that inhabit the Arctic waters, two of which, Gymnocanthus tricuspis and Myoxocephalus scorpioides, have adapted to a restricted range within the Arctic, whereas the third species, Myoxocephalus scorpius, has a wider distribution. We tested the hypothesis that the fish restricted to Arctic cold waters would show reduced cardiorespiratory scope in response to an increase in temperature, as compared with the more eurythermal M. scorpius. As expected from their biogeography, M. scorpioides and G. tricuspis maximised cardiorespiratory performance at temperatures between 1 and 4°C, whereas M. scorpius maximised performance over a wider range of temperatures (1-10°C). Furthermore, factorial scope for cardiac output collapsed at elevated temperature for the two high-latitude species, negatively impacting their ability to support aerobically driven metabolic processes. Consequently, these results concurred with our hypothesis, suggesting that the sculpin species restricted to the Arctic are likely to be negatively impacted by increases in ocean temperatures.
Keyword Cardiovascular
Conservation physiology
Scope
Temperature
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 03 Dec 2013, 00:54:43 EST by System User on behalf of School of Biological Sciences