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 cont...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/10536/DRO/DU:30105127 https://figshare.com/articles/journal_contribution/Exceptional_aerobic_scope_and_cardiovascular_performance_of_pink_salmon_Oncorhynchus_gorbuscha_may_underlie_resilience_in_a_warming_climate/20824117 |
id |
ftdeakinunifig:oai:figshare.com:article/20824117 |
---|---|
record_format |
openpolar |
spelling |
ftdeakinunifig:oai:figshare.com:article/20824117 2024-06-23T07:55:56+00:00 Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate Timothy Clark KM Jeffries SG Hinch AP Farrell 2011-09-15T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30105127 https://figshare.com/articles/journal_contribution/Exceptional_aerobic_scope_and_cardiovascular_performance_of_pink_salmon_Oncorhynchus_gorbuscha_may_underlie_resilience_in_a_warming_climate/20824117 unknown http://hdl.handle.net/10536/DRO/DU:30105127 https://figshare.com/articles/journal_contribution/Exceptional_aerobic_scope_and_cardiovascular_performance_of_pink_salmon_Oncorhynchus_gorbuscha_may_underlie_resilience_in_a_warming_climate/20824117 All Rights Reserved Fisheries sciences not elsewhere classified Adaptation Physiological Aerobiosis Animals British Columbia Cardiac Output Female Geography Global Warming Heart Male Oxygen Oxygen Consumption Respiratory Physiological Phenomena Salmon Temperature Water School of Life and Environmental Sciences Text Journal contribution 2011 ftdeakinunifig 2024-06-06T01:30:02Z 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 (M(O2,min) and M(O2,max), respectively) across the temperature range of 8 to 28°C, reflected in a higher aerobic scope (M(O2,max)-M(O2,min)) 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. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon DRO - Deakin Research Online British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Pacific |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Fisheries sciences not elsewhere classified Adaptation Physiological Aerobiosis Animals British Columbia Cardiac Output Female Geography Global Warming Heart Male Oxygen Oxygen Consumption Respiratory Physiological Phenomena Salmon Temperature Water School of Life and Environmental Sciences |
spellingShingle |
Fisheries sciences not elsewhere classified Adaptation Physiological Aerobiosis Animals British Columbia Cardiac Output Female Geography Global Warming Heart Male Oxygen Oxygen Consumption Respiratory Physiological Phenomena Salmon Temperature Water School of Life and Environmental Sciences Timothy Clark KM Jeffries SG Hinch AP Farrell Exceptional aerobic scope and cardiovascular performance of pink salmon (Oncorhynchus gorbuscha) may underlie resilience in a warming climate |
topic_facet |
Fisheries sciences not elsewhere classified Adaptation Physiological Aerobiosis Animals British Columbia Cardiac Output Female Geography Global Warming Heart Male Oxygen Oxygen Consumption Respiratory Physiological Phenomena Salmon Temperature Water School of Life and Environmental Sciences |
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 (M(O2,min) and M(O2,max), respectively) across the temperature range of 8 to 28°C, reflected in a higher aerobic scope (M(O2,max)-M(O2,min)) 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 |
Article in Journal/Newspaper |
author |
Timothy Clark KM Jeffries SG Hinch AP Farrell |
author_facet |
Timothy Clark KM Jeffries SG Hinch AP Farrell |
author_sort |
Timothy Clark |
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 |
publishDate |
2011 |
url |
http://hdl.handle.net/10536/DRO/DU:30105127 https://figshare.com/articles/journal_contribution/Exceptional_aerobic_scope_and_cardiovascular_performance_of_pink_salmon_Oncorhynchus_gorbuscha_may_underlie_resilience_in_a_warming_climate/20824117 |
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://hdl.handle.net/10536/DRO/DU:30105127 https://figshare.com/articles/journal_contribution/Exceptional_aerobic_scope_and_cardiovascular_performance_of_pink_salmon_Oncorhynchus_gorbuscha_may_underlie_resilience_in_a_warming_climate/20824117 |
op_rights |
All Rights Reserved |
_version_ |
1802648742793314304 |