Silver European eels health in Mediterranean habitats
International audience The degradation in the quality of silver eel and their health could have been a major factor in the collapse of the European eel (Anguilla anguilla) population. However, the health status of the spawners has been poorly studied until now. This study evaluated the quality of mi...
Published in: | Ecology of Freshwater Fish |
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Online Access: | https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 https://doi.org/10.1111/eff.12077 |
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ftccsdartic:oai:HAL:hal-01265895v1 2023-05-15T13:27:16+02:00 Silver European eels health in Mediterranean habitats Amilhat, Elsa Fazio, Géraldine Simon, Gaël Manetti, Marc Paris, Séverine Delahaut, Laurence Farrugio, Henri Lecomte-Finiger, Raymonde Sasal, Pierre Faliex, Elisabeth Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) Unknown Unité de Recherche Interactions Animal-Environnement - EA 4689 (IAE) Université de Reims Champagne-Ardenne (URCA) IFREMER Laboratoire Ressources Halieutiques (IFREMER Laboratoire Ressources Halieutiques) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Centre de formation et de recherche sur l'environnement marin (CEFREM) Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2014-01 https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 https://doi.org/10.1111/eff.12077 en eng HAL CCSD Consejo Superior de Investigaciones Científicas info:eu-repo/semantics/altIdentifier/doi/10.1111/eff.12077 hal-01265895 https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 doi:10.1111/eff.12077 ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 Ecology of Freshwater Fish, Consejo Superior de Investigaciones Científicas, 2014, 23 (1), p. 49-64. ⟨10.1111/eff.12077⟩ Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1111/eff.12077 2021-11-21T02:54:52Z International audience The degradation in the quality of silver eel and their health could have been a major factor in the collapse of the European eel (Anguilla anguilla) population. However, the health status of the spawners has been poorly studied until now. This study evaluated the quality of migrant male silver eels from four Mediterranean habitats in France presenting different degrees of contamination: Canet-Saint-Nazaire, Salses-Leucate and Bages-Sigean lagoons and La Berre River. We considered pathogens including Anguillicoloides crassus and EVEX virus and the concentration of chemical contaminants including PCBs, OCs and heavy metals. Our study results revealed different patterns of pollution and infection in the four habitats, with high individual variability. No single silver eel was free of pollution. Total dichloro-diphenyl-trichloroethane (DDT) and copper contaminations, as well as the Swim bladder Degenerative Index (induced by parasitism), were remarkably high in eels from Canet lagoon, while eels from Salses lagoon showed lower levels of contaminants and parasite infection. A non-negligible proportion of eels were strongly impacted with levels of contaminants/parasites that could potentially impair their migration and reproduction. Our study revealed low to moderate contamination levels compared with the other Mediterranean sites previously reported, except for high concentrations of DDTs and Cu in Canet lagoon. We discuss the contribution of these results in the context of possible implications for silver eels reproductive success and local eel population management. Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Ecology of Freshwater Fish 23 1 49 64 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens [SDE.BE]Environmental Sciences/Biodiversity and Ecology Amilhat, Elsa Fazio, Géraldine Simon, Gaël Manetti, Marc Paris, Séverine Delahaut, Laurence Farrugio, Henri Lecomte-Finiger, Raymonde Sasal, Pierre Faliex, Elisabeth Silver European eels health in Mediterranean habitats |
topic_facet |
Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The degradation in the quality of silver eel and their health could have been a major factor in the collapse of the European eel (Anguilla anguilla) population. However, the health status of the spawners has been poorly studied until now. This study evaluated the quality of migrant male silver eels from four Mediterranean habitats in France presenting different degrees of contamination: Canet-Saint-Nazaire, Salses-Leucate and Bages-Sigean lagoons and La Berre River. We considered pathogens including Anguillicoloides crassus and EVEX virus and the concentration of chemical contaminants including PCBs, OCs and heavy metals. Our study results revealed different patterns of pollution and infection in the four habitats, with high individual variability. No single silver eel was free of pollution. Total dichloro-diphenyl-trichloroethane (DDT) and copper contaminations, as well as the Swim bladder Degenerative Index (induced by parasitism), were remarkably high in eels from Canet lagoon, while eels from Salses lagoon showed lower levels of contaminants and parasite infection. A non-negligible proportion of eels were strongly impacted with levels of contaminants/parasites that could potentially impair their migration and reproduction. Our study revealed low to moderate contamination levels compared with the other Mediterranean sites previously reported, except for high concentrations of DDTs and Cu in Canet lagoon. We discuss the contribution of these results in the context of possible implications for silver eels reproductive success and local eel population management. |
author2 |
Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) Unknown Unité de Recherche Interactions Animal-Environnement - EA 4689 (IAE) Université de Reims Champagne-Ardenne (URCA) IFREMER Laboratoire Ressources Halieutiques (IFREMER Laboratoire Ressources Halieutiques) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Centre de formation et de recherche sur l'environnement marin (CEFREM) Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Amilhat, Elsa Fazio, Géraldine Simon, Gaël Manetti, Marc Paris, Séverine Delahaut, Laurence Farrugio, Henri Lecomte-Finiger, Raymonde Sasal, Pierre Faliex, Elisabeth |
author_facet |
Amilhat, Elsa Fazio, Géraldine Simon, Gaël Manetti, Marc Paris, Séverine Delahaut, Laurence Farrugio, Henri Lecomte-Finiger, Raymonde Sasal, Pierre Faliex, Elisabeth |
author_sort |
Amilhat, Elsa |
title |
Silver European eels health in Mediterranean habitats |
title_short |
Silver European eels health in Mediterranean habitats |
title_full |
Silver European eels health in Mediterranean habitats |
title_fullStr |
Silver European eels health in Mediterranean habitats |
title_full_unstemmed |
Silver European eels health in Mediterranean habitats |
title_sort |
silver european eels health in mediterranean habitats |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 https://doi.org/10.1111/eff.12077 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 Ecology of Freshwater Fish, Consejo Superior de Investigaciones Científicas, 2014, 23 (1), p. 49-64. ⟨10.1111/eff.12077⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/eff.12077 hal-01265895 https://hal-univ-perp.archives-ouvertes.fr/hal-01265895 doi:10.1111/eff.12077 |
op_doi |
https://doi.org/10.1111/eff.12077 |
container_title |
Ecology of Freshwater Fish |
container_volume |
23 |
container_issue |
1 |
container_start_page |
49 |
op_container_end_page |
64 |
_version_ |
1766397399195975680 |