Silver European eels health in Mediterranean habitats
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...
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ftarchimer:oai:archimer.ifremer.fr:28252 2023-05-15T13:27:15+02:00 Silver European eels health in Mediterranean habitats Amilhat, Elsa Fazio, Geraldine Simon, Gael Manetti, Marc Paris, Severine Delahaut, Laurence Farrugio, Henri Lecomte-finiger, Raymonde Sasal, Pierre Faliex, Elisabeth 2014-01 application/pdf https://archimer.ifremer.fr/doc/00171/28252/26543.pdf https://doi.org/10.1111/eff.12077 https://archimer.ifremer.fr/doc/00171/28252/ eng eng Wiley-blackwell https://archimer.ifremer.fr/doc/00171/28252/26543.pdf doi:10.1111/eff.12077 https://archimer.ifremer.fr/doc/00171/28252/ 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd info:eu-repo/semantics/openAccess restricted use Ecology Of Freshwater Fish (0906-6691) (Wiley-blackwell), 2014-01 , Vol. 23 , N. 1 , P. 49-64 Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens text Publication info:eu-repo/semantics/article 2014 ftarchimer https://doi.org/10.1111/eff.12077 2021-09-23T20:23:53Z 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 Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Ecology of Freshwater Fish 23 1 49 64 |
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 |
Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens |
spellingShingle |
Anguilla anguilla Mediterranean lagoons silver eel contamination spawner quality pathogens Amilhat, Elsa Fazio, Geraldine Simon, Gael Manetti, Marc Paris, Severine 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 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Amilhat, Elsa Fazio, Geraldine Simon, Gael Manetti, Marc Paris, Severine Delahaut, Laurence Farrugio, Henri Lecomte-finiger, Raymonde Sasal, Pierre Faliex, Elisabeth |
author_facet |
Amilhat, Elsa Fazio, Geraldine Simon, Gael Manetti, Marc Paris, Severine 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 |
Wiley-blackwell |
publishDate |
2014 |
url |
https://archimer.ifremer.fr/doc/00171/28252/26543.pdf https://doi.org/10.1111/eff.12077 https://archimer.ifremer.fr/doc/00171/28252/ |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Ecology Of Freshwater Fish (0906-6691) (Wiley-blackwell), 2014-01 , Vol. 23 , N. 1 , P. 49-64 |
op_relation |
https://archimer.ifremer.fr/doc/00171/28252/26543.pdf doi:10.1111/eff.12077 https://archimer.ifremer.fr/doc/00171/28252/ |
op_rights |
2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd info:eu-repo/semantics/openAccess restricted use |
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_ |
1766397319738032128 |