Thermal dependence of cardiac function in arctic fish: implications of a warming world
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 perfo...
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:318598 2023-05-15T14:35:07+02:00 Thermal dependence of cardiac function in arctic fish: implications of a warming world Franklin, Craig E. Farrell, Anthony P. Altimiras, Jordi Axelsson, Michael 2013-01-01 https://espace.library.uq.edu.au/view/UQ:318598/UQ318598_OA.pdf https://espace.library.uq.edu.au/view/UQ:318598 eng eng The Company of Biologists Ltd. doi:10.1242/jeb.087130 issn:0022-0949 issn:1477-9145 orcid:0000-0003-1315-3797 Not set Cardiovascular Conservation physiology Scope Temperature 1103 Clinical Sciences 1104 Complementary and Alternative Medicine 1105 Dentistry 1109 Neurosciences 1312 Molecular Biology 1314 Physiology Journal Article 2013 ftunivqespace https://doi.org/10.1242/jeb.087130 2020-12-15T00:50:22Z 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. Article in Journal/Newspaper Arctic The University of Queensland: UQ eSpace Arctic Journal of Experimental Biology |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Cardiovascular Conservation physiology Scope Temperature 1103 Clinical Sciences 1104 Complementary and Alternative Medicine 1105 Dentistry 1109 Neurosciences 1312 Molecular Biology 1314 Physiology |
spellingShingle |
Cardiovascular Conservation physiology Scope Temperature 1103 Clinical Sciences 1104 Complementary and Alternative Medicine 1105 Dentistry 1109 Neurosciences 1312 Molecular Biology 1314 Physiology Franklin, Craig E. Farrell, Anthony P. Altimiras, Jordi Axelsson, Michael Thermal dependence of cardiac function in arctic fish: implications of a warming world |
topic_facet |
Cardiovascular Conservation physiology Scope Temperature 1103 Clinical Sciences 1104 Complementary and Alternative Medicine 1105 Dentistry 1109 Neurosciences 1312 Molecular Biology 1314 Physiology |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Franklin, Craig E. Farrell, Anthony P. Altimiras, Jordi Axelsson, Michael |
author_facet |
Franklin, Craig E. Farrell, Anthony P. Altimiras, Jordi Axelsson, Michael |
author_sort |
Franklin, Craig E. |
title |
Thermal dependence of cardiac function in arctic fish: implications of a warming world |
title_short |
Thermal dependence of cardiac function in arctic fish: implications of a warming world |
title_full |
Thermal dependence of cardiac function in arctic fish: implications of a warming world |
title_fullStr |
Thermal dependence of cardiac function in arctic fish: implications of a warming world |
title_full_unstemmed |
Thermal dependence of cardiac function in arctic fish: implications of a warming world |
title_sort |
thermal dependence of cardiac function in arctic fish: implications of a warming world |
publisher |
The Company of Biologists Ltd. |
publishDate |
2013 |
url |
https://espace.library.uq.edu.au/view/UQ:318598/UQ318598_OA.pdf https://espace.library.uq.edu.au/view/UQ:318598 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
doi:10.1242/jeb.087130 issn:0022-0949 issn:1477-9145 orcid:0000-0003-1315-3797 Not set |
op_doi |
https://doi.org/10.1242/jeb.087130 |
container_title |
Journal of Experimental Biology |
_version_ |
1766308002675032064 |