Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not
The world's oceans are acidifying and warming as a result of increasing atmospheric CO 2 concentrations. The thermal tolerance of fish greatly depends on the cardiovascular ability to supply the tissues with oxygen. The highly oxygen-dependent heart mitochondria thus might play a key role in sh...
Published in: | Journal of Experimental Biology |
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Online Access: | http://jeb.biologists.org/cgi/content/short/222/21/jeb213017 https://doi.org/10.1242/jeb.213017 |
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fthighwire:oai:open-archive.highwire.org:jexbio:222/21/jeb213017 2023-05-15T17:50:52+02:00 Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not Howald, Sarah Cominassi, Louise LeBayon, Nicolas Claireaux, Guy Mark, Felix C. 2019-11-11 05:48:30.0 text/html http://jeb.biologists.org/cgi/content/short/222/21/jeb213017 https://doi.org/10.1242/jeb.213017 en eng The Company of Biologists Ltd http://jeb.biologists.org/cgi/content/short/222/21/jeb213017 http://dx.doi.org/10.1242/jeb.213017 Copyright (C) 2019, Company of Biologists RESEARCH ARTICLE TEXT 2019 fthighwire https://doi.org/10.1242/jeb.213017 2019-11-17T17:48:16Z The world's oceans are acidifying and warming as a result of increasing atmospheric CO 2 concentrations. The thermal tolerance of fish greatly depends on the cardiovascular ability to supply the tissues with oxygen. The highly oxygen-dependent heart mitochondria thus might play a key role in shaping an organism's tolerance to temperature. The present study aimed to investigate the effects of acute and chronic warming on the respiratory capacity of European sea bass ( Dicentrarchus labrax L.) heart mitochondria. We hypothesized that acute warming would impair mitochondrial respiratory capacity, but be compensated for by life-time conditioning. Increasing P CO 2 may additionally cause shifts in metabolic pathways by inhibiting several enzymes of the cellular energy metabolism. Among other shifts in metabolic pathways, acute warming of heart mitochondria of cold life-conditioned fish increased leak respiration rate, suggesting a lower aerobic capacity to synthesize ATP with acute warming. However, thermal conditioning increased mitochondrial functionality, e.g. higher respiratory control ratios in heart mitochondria of warm life-conditioned compared with cold life-conditioned fish. Exposure to high P CO 2 synergistically amplified the effects of acute and long-term warming, but did not result in changes by itself. This high ability to maintain mitochondrial function under ocean acidification can be explained by the fact that seabass are generally able to acclimate to a variety of environmental conditions. Improved mitochondrial energy metabolism after warm conditioning could be due to the origin of this species in the warm waters of the Mediterranean. Our results also indicate that seabass are not yet fully adapted to the colder temperatures in their northern distribution range and might benefit from warmer temperatures in these latitudes. Text Ocean acidification HighWire Press (Stanford University) Journal of Experimental Biology |
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HighWire Press (Stanford University) |
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RESEARCH ARTICLE |
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RESEARCH ARTICLE Howald, Sarah Cominassi, Louise LeBayon, Nicolas Claireaux, Guy Mark, Felix C. Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
topic_facet |
RESEARCH ARTICLE |
description |
The world's oceans are acidifying and warming as a result of increasing atmospheric CO 2 concentrations. The thermal tolerance of fish greatly depends on the cardiovascular ability to supply the tissues with oxygen. The highly oxygen-dependent heart mitochondria thus might play a key role in shaping an organism's tolerance to temperature. The present study aimed to investigate the effects of acute and chronic warming on the respiratory capacity of European sea bass ( Dicentrarchus labrax L.) heart mitochondria. We hypothesized that acute warming would impair mitochondrial respiratory capacity, but be compensated for by life-time conditioning. Increasing P CO 2 may additionally cause shifts in metabolic pathways by inhibiting several enzymes of the cellular energy metabolism. Among other shifts in metabolic pathways, acute warming of heart mitochondria of cold life-conditioned fish increased leak respiration rate, suggesting a lower aerobic capacity to synthesize ATP with acute warming. However, thermal conditioning increased mitochondrial functionality, e.g. higher respiratory control ratios in heart mitochondria of warm life-conditioned compared with cold life-conditioned fish. Exposure to high P CO 2 synergistically amplified the effects of acute and long-term warming, but did not result in changes by itself. This high ability to maintain mitochondrial function under ocean acidification can be explained by the fact that seabass are generally able to acclimate to a variety of environmental conditions. Improved mitochondrial energy metabolism after warm conditioning could be due to the origin of this species in the warm waters of the Mediterranean. Our results also indicate that seabass are not yet fully adapted to the colder temperatures in their northern distribution range and might benefit from warmer temperatures in these latitudes. |
format |
Text |
author |
Howald, Sarah Cominassi, Louise LeBayon, Nicolas Claireaux, Guy Mark, Felix C. |
author_facet |
Howald, Sarah Cominassi, Louise LeBayon, Nicolas Claireaux, Guy Mark, Felix C. |
author_sort |
Howald, Sarah |
title |
Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
title_short |
Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
title_full |
Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
title_fullStr |
Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
title_full_unstemmed |
Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not |
title_sort |
future ocean warming may prove beneficial for the northern population of european seabass, but ocean acidification will not |
publisher |
The Company of Biologists Ltd |
publishDate |
2019 |
url |
http://jeb.biologists.org/cgi/content/short/222/21/jeb213017 https://doi.org/10.1242/jeb.213017 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://jeb.biologists.org/cgi/content/short/222/21/jeb213017 http://dx.doi.org/10.1242/jeb.213017 |
op_rights |
Copyright (C) 2019, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.213017 |
container_title |
Journal of Experimental Biology |
_version_ |
1766157784806588416 |