Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate
Little is known of the physiological mechanisms underlying the effects of climate change on animals, yet it is clear that some species appear more resilient than others. As pink salmon ( Oncorhynchus gorbuscha ) in British Columbia, Canada, have flourished in the current era of climate warming in co...
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fthighwire:oai:open-archive.highwire.org:jexbio:214/18/3074 2023-05-15T17:52:50+02:00 Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate Clark, Timothy D. Jeffries, Kenneth M. Hinch, Scott G. Farrell, Anthony P. 2011-09-15 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/214/18/3074 https://doi.org/10.1242/jeb.060517 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/214/18/3074 http://dx.doi.org/10.1242/jeb.060517 Copyright (C) 2011, Company of Biologists Research Articles TEXT 2011 fthighwire https://doi.org/10.1242/jeb.060517 2013-05-27T12:26:13Z Little is known of the physiological mechanisms underlying the effects of climate change on animals, yet it is clear that some species appear more resilient than others. As pink salmon ( Oncorhynchus gorbuscha ) in British Columbia, Canada, have flourished in the current era of climate warming in contrast to other Pacific salmonids in the same watershed, this study investigated whether the continuing success of pink salmon may be linked with exceptional cardiorespiratory adaptations and thermal tolerance of adult fish during their spawning migration. Sex-specific differences existed in minimum and maximum oxygen consumption rates (<f> </f> and <f> </f>, respectively) across the temperature range of 8 to 28°C, reflected in a higher aerobic scope (<f> </f>) for males. Nevertheless, the aerobic scope of both sexes was optimal at 21°C ( T opt ) and was elevated across the entire temperature range in comparison with other Pacific salmonids. As T opt for aerobic scope of this pink salmon population is higher than in other Pacific salmonids, and historic river temperature data reveal that this population rarely encounters temperatures exceeding T opt , these findings offer a physiological explanation for the continuing success of this species throughout the current climate-warming period. Despite this, declining cardiac output was evident above 17°C, and maximum attainable swimming speed was impaired above ∼23°C, suggesting negative implications under prolonged thermal exposure. While forecasted summer river temperatures over the next century are likely to negatively impact all Pacific salmonids, we suggest that the cardiorespiratory capacity of pink salmon may confer a selective advantage over other species. Text Oncorhynchus gorbuscha Pink salmon HighWire Press (Stanford University) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Pacific Journal of Experimental Biology 214 18 3074 3081 |
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HighWire Press (Stanford University) |
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English |
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Research Articles |
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Research Articles Clark, Timothy D. Jeffries, Kenneth M. Hinch, Scott G. Farrell, Anthony P. Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
topic_facet |
Research Articles |
description |
Little is known of the physiological mechanisms underlying the effects of climate change on animals, yet it is clear that some species appear more resilient than others. As pink salmon ( Oncorhynchus gorbuscha ) in British Columbia, Canada, have flourished in the current era of climate warming in contrast to other Pacific salmonids in the same watershed, this study investigated whether the continuing success of pink salmon may be linked with exceptional cardiorespiratory adaptations and thermal tolerance of adult fish during their spawning migration. Sex-specific differences existed in minimum and maximum oxygen consumption rates (<f> </f> and <f> </f>, respectively) across the temperature range of 8 to 28°C, reflected in a higher aerobic scope (<f> </f>) for males. Nevertheless, the aerobic scope of both sexes was optimal at 21°C ( T opt ) and was elevated across the entire temperature range in comparison with other Pacific salmonids. As T opt for aerobic scope of this pink salmon population is higher than in other Pacific salmonids, and historic river temperature data reveal that this population rarely encounters temperatures exceeding T opt , these findings offer a physiological explanation for the continuing success of this species throughout the current climate-warming period. Despite this, declining cardiac output was evident above 17°C, and maximum attainable swimming speed was impaired above ∼23°C, suggesting negative implications under prolonged thermal exposure. While forecasted summer river temperatures over the next century are likely to negatively impact all Pacific salmonids, we suggest that the cardiorespiratory capacity of pink salmon may confer a selective advantage over other species. |
format |
Text |
author |
Clark, Timothy D. Jeffries, Kenneth M. Hinch, Scott G. Farrell, Anthony P. |
author_facet |
Clark, Timothy D. Jeffries, Kenneth M. Hinch, Scott G. Farrell, Anthony P. |
author_sort |
Clark, Timothy D. |
title |
Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
title_short |
Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
title_full |
Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
title_fullStr |
Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
title_full_unstemmed |
Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
title_sort |
exceptional aerobic scope and cardiovascular performance of pink salmon (oncorhynchus gorbuscha) may underlie resilience in a warming climate |
publisher |
Company of Biologists |
publishDate |
2011 |
url |
http://jeb.biologists.org/cgi/content/short/214/18/3074 https://doi.org/10.1242/jeb.060517 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada Pacific |
geographic_facet |
British Columbia Canada Pacific |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_relation |
http://jeb.biologists.org/cgi/content/short/214/18/3074 http://dx.doi.org/10.1242/jeb.060517 |
op_rights |
Copyright (C) 2011, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.060517 |
container_title |
Journal of Experimental Biology |
container_volume |
214 |
container_issue |
18 |
container_start_page |
3074 |
op_container_end_page |
3081 |
_version_ |
1766160570315177984 |