Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance
WOS:000475657500006 International audience In teleosts, the regulation of hydromineral balance has a direct impact on several physiological functions, biochemical processes, and can influence behaviour, distribution and survival. As European sea bass Dicentrarchus labrax undertake seasonal migration...
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Online Access: | https://hal.science/hal-02434225 https://doi.org/10.1007/s00227-019-3551-z |
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ftunivantilles:oai:HAL:hal-02434225v1 2024-04-14T08:09:19+00:00 Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance L'Honore, Thibaut Farcy, Emilie Chatain, Beatrice Gros, Romain Ruelle, F Hermet, Sophie Blondeau-Bidet, Eva Naudet, Jeanne Lorin-Nebel, Catherine MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université de Montpellier (UM) 2019 https://hal.science/hal-02434225 https://doi.org/10.1007/s00227-019-3551-z en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-019-3551-z hal-02434225 https://hal.science/hal-02434225 doi:10.1007/s00227-019-3551-z ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-02434225 Marine Biology, 2019, 166 (8), pp.102. ⟨10.1007/s00227-019-3551-z⟩ molecular characterization phenotypic plasticity gene-expression dicentrarchus-labrax teleost fish atlantic salmon stress-response dna methylation growth-hormone messenger-rna levels [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems info:eu-repo/semantics/article Journal articles 2019 ftunivantilles https://doi.org/10.1007/s00227-019-3551-z 2024-03-21T17:56:11Z WOS:000475657500006 International audience In teleosts, the regulation of hydromineral balance has a direct impact on several physiological functions, biochemical processes, and can influence behaviour, distribution and survival. As European sea bass Dicentrarchus labrax undertake seasonal migrations from seawater (SW) to brackish, estuarine and fresh water (FW) in their habitat, this study investigates their capacity to tolerate fresh water and explores intraspecific variations in physiological responses. Juvenile D. labrax were transferred from SW to FW at various ages. Freshwater-tolerant and non-tolerant phenotypes were discriminated according to behavioural and morphological characteristics. About 30% of the fish exposed to FW were identified as freshwater intolerant following FW challenges performed at different ages. Interestingly, intolerant fish exhibited the same phenotypic traits: erratic swimming, lower speed, isolation from the shoal and darker colour. Freshwater-intolerant fish were also characterised by a significant lower blood osmolality compared to tolerant fish, and significantly lower Na+/K+-ATPase α1a expression in the posterior kidney. An imbalance in ion regulatory mechanisms was further confirmed by a blood Na+/Cl− ratio imbalance observed in some freshwater-intolerant fish. The analysis of glucocorticoid and mineralocorticoid receptor expression levels in gills and kidney revealed significant differences between freshwater-intolerant and -tolerant fish in both organs, suggesting differential stress-related responses. This study clearly shows an intraspecific difference in the responses following FW transfer with a decreased renal ion uptake capacity as a major cause for freshwater intolerance. Article in Journal/Newspaper Atlantic salmon Université des Antilles (UAG): HAL Marine Biology 166 8 |
institution |
Open Polar |
collection |
Université des Antilles (UAG): HAL |
op_collection_id |
ftunivantilles |
language |
English |
topic |
molecular characterization phenotypic plasticity gene-expression dicentrarchus-labrax teleost fish atlantic salmon stress-response dna methylation growth-hormone messenger-rna levels [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
spellingShingle |
molecular characterization phenotypic plasticity gene-expression dicentrarchus-labrax teleost fish atlantic salmon stress-response dna methylation growth-hormone messenger-rna levels [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems L'Honore, Thibaut Farcy, Emilie Chatain, Beatrice Gros, Romain Ruelle, F Hermet, Sophie Blondeau-Bidet, Eva Naudet, Jeanne Lorin-Nebel, Catherine Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
topic_facet |
molecular characterization phenotypic plasticity gene-expression dicentrarchus-labrax teleost fish atlantic salmon stress-response dna methylation growth-hormone messenger-rna levels [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
description |
WOS:000475657500006 International audience In teleosts, the regulation of hydromineral balance has a direct impact on several physiological functions, biochemical processes, and can influence behaviour, distribution and survival. As European sea bass Dicentrarchus labrax undertake seasonal migrations from seawater (SW) to brackish, estuarine and fresh water (FW) in their habitat, this study investigates their capacity to tolerate fresh water and explores intraspecific variations in physiological responses. Juvenile D. labrax were transferred from SW to FW at various ages. Freshwater-tolerant and non-tolerant phenotypes were discriminated according to behavioural and morphological characteristics. About 30% of the fish exposed to FW were identified as freshwater intolerant following FW challenges performed at different ages. Interestingly, intolerant fish exhibited the same phenotypic traits: erratic swimming, lower speed, isolation from the shoal and darker colour. Freshwater-intolerant fish were also characterised by a significant lower blood osmolality compared to tolerant fish, and significantly lower Na+/K+-ATPase α1a expression in the posterior kidney. An imbalance in ion regulatory mechanisms was further confirmed by a blood Na+/Cl− ratio imbalance observed in some freshwater-intolerant fish. The analysis of glucocorticoid and mineralocorticoid receptor expression levels in gills and kidney revealed significant differences between freshwater-intolerant and -tolerant fish in both organs, suggesting differential stress-related responses. This study clearly shows an intraspecific difference in the responses following FW transfer with a decreased renal ion uptake capacity as a major cause for freshwater intolerance. |
author2 |
MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Université de Montpellier (UM) |
format |
Article in Journal/Newspaper |
author |
L'Honore, Thibaut Farcy, Emilie Chatain, Beatrice Gros, Romain Ruelle, F Hermet, Sophie Blondeau-Bidet, Eva Naudet, Jeanne Lorin-Nebel, Catherine |
author_facet |
L'Honore, Thibaut Farcy, Emilie Chatain, Beatrice Gros, Romain Ruelle, F Hermet, Sophie Blondeau-Bidet, Eva Naudet, Jeanne Lorin-Nebel, Catherine |
author_sort |
L'Honore, Thibaut |
title |
Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
title_short |
Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
title_full |
Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
title_fullStr |
Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
title_full_unstemmed |
Are European sea bass as euryhaline as expected? Intraspecific variation in freshwater tolerance |
title_sort |
are european sea bass as euryhaline as expected? intraspecific variation in freshwater tolerance |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02434225 https://doi.org/10.1007/s00227-019-3551-z |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-02434225 Marine Biology, 2019, 166 (8), pp.102. ⟨10.1007/s00227-019-3551-z⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-019-3551-z hal-02434225 https://hal.science/hal-02434225 doi:10.1007/s00227-019-3551-z |
op_doi |
https://doi.org/10.1007/s00227-019-3551-z |
container_title |
Marine Biology |
container_volume |
166 |
container_issue |
8 |
_version_ |
1796306804419854336 |