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 CO2 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 sha...
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The Company of Biologists
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ftarchimer:oai:archimer.ifremer.fr:70446 2023-05-15T17:50:49+02:00 Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not Howald, Sarah Cominassi, Louise Le Bayon, Nicolas Claireaux, Guy Mark, Felix C. 2019-11 application/pdf https://archimer.ifremer.fr/doc/00592/70446/68556.pdf https://archimer.ifremer.fr/doc/00592/70446/68664.pdf https://doi.org/10.1242/jeb.213017 https://archimer.ifremer.fr/doc/00592/70446/ eng eng The Company of Biologists https://archimer.ifremer.fr/doc/00592/70446/68556.pdf https://archimer.ifremer.fr/doc/00592/70446/68664.pdf doi:10.1242/jeb.213017 https://archimer.ifremer.fr/doc/00592/70446/ info:eu-repo/semantics/openAccess restricted use Journal Of Experimental Biology (0022-0949) (The Company of Biologists), 2019-11 , Vol. 222 , N. 21 , P. (?) Mitochondrial respiration Developmental acclimation Temperate teleost Heart text Publication info:eu-repo/semantics/article 2019 ftarchimer https://doi.org/10.1242/jeb.213017 2021-09-23T20:33:54Z The world's oceans are acidifying and warming as a result of increasing atmospheric CO2 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 PCO2 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 PCO2 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. Article in Journal/Newspaper Ocean acidification Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Journal of Experimental Biology |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Mitochondrial respiration Developmental acclimation Temperate teleost Heart |
spellingShingle |
Mitochondrial respiration Developmental acclimation Temperate teleost Heart Howald, Sarah Cominassi, Louise Le Bayon, 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 |
Mitochondrial respiration Developmental acclimation Temperate teleost Heart |
description |
The world's oceans are acidifying and warming as a result of increasing atmospheric CO2 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 PCO2 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 PCO2 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 |
Article in Journal/Newspaper |
author |
Howald, Sarah Cominassi, Louise Le Bayon, Nicolas Claireaux, Guy Mark, Felix C. |
author_facet |
Howald, Sarah Cominassi, Louise Le Bayon, 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 |
publishDate |
2019 |
url |
https://archimer.ifremer.fr/doc/00592/70446/68556.pdf https://archimer.ifremer.fr/doc/00592/70446/68664.pdf https://doi.org/10.1242/jeb.213017 https://archimer.ifremer.fr/doc/00592/70446/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Journal Of Experimental Biology (0022-0949) (The Company of Biologists), 2019-11 , Vol. 222 , N. 21 , P. (?) |
op_relation |
https://archimer.ifremer.fr/doc/00592/70446/68556.pdf https://archimer.ifremer.fr/doc/00592/70446/68664.pdf doi:10.1242/jeb.213017 https://archimer.ifremer.fr/doc/00592/70446/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1242/jeb.213017 |
container_title |
Journal of Experimental Biology |
_version_ |
1766157716073480192 |