Is European catfish a threat to eels in southern France?
International audience European eel (Anguilla anguilla) is recognized as a critically endangered species in the northern hemisphere. Threats such as overfishing or pollution are well known as risks for eel populations. However, much less is known about the impact of introduced fish on European eels....
Published in: | Aquatic Conservation: Marine and Freshwater Ecosystems |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2011
|
Subjects: | |
Online Access: | https://hal.science/hal-03469135 https://hal.science/hal-03469135/document https://hal.science/hal-03469135/file/Martino_10155.pdf https://doi.org/10.1002/aqc.1177 |
id |
ftunivnantes:oai:HAL:hal-03469135v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-03469135v1 2023-05-15T13:27:54+02:00 Is European catfish a threat to eels in southern France? Martino, Aurelia Syväranta, Jari Crivelli, Alain Jean Céréghino, Régis Santoul, Frédéric Laboratoire Ecologie Fonctionnelle et Environnement (LEFE) Institut Ecologie et Environnement (INEE) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB) Leibniz Association Station Biologique de la Tour du Valat 2011 https://hal.science/hal-03469135 https://hal.science/hal-03469135/document https://hal.science/hal-03469135/file/Martino_10155.pdf https://doi.org/10.1002/aqc.1177 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/aqc.1177 hal-03469135 https://hal.science/hal-03469135 https://hal.science/hal-03469135/document https://hal.science/hal-03469135/file/Martino_10155.pdf doi:10.1002/aqc.1177 OATAO: 10155 info:eu-repo/semantics/OpenAccess ISSN: 1052-7613 EISSN: 1099-0755 Aquatic Conservation: Marine and Freshwater Ecosystems https://hal.science/hal-03469135 Aquatic Conservation: Marine and Freshwater Ecosystems, 2011, 21 (3), pp.276-281. ⟨10.1002/aqc.1177⟩ European eel Conservation European catfish Stable isotope analysis Gut contents Camargue [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis info:eu-repo/semantics/article Journal articles 2011 ftunivnantes https://doi.org/10.1002/aqc.1177 2023-02-22T02:36:35Z International audience European eel (Anguilla anguilla) is recognized as a critically endangered species in the northern hemisphere. Threats such as overfishing or pollution are well known as risks for eel populations. However, much less is known about the impact of introduced fish on European eels. In particular, introduced large-bodied predators could become new predators to eels.The potential impact of European catfish (Silurus glanis L) on an eel population in the Camargue, southern France was studied using a combination of stable isotope and gut content analyses.Only large bodied catfish (> 500 mm) can consume numerous fish prey. However, catfish mostly consumed crayfish (Procambarus clarkii), these prey items being found in 79% of the guts of the largest individuals. Eel was absent from the dissected catfish guts. A mixing model based on Bayesian inference revealed that catfish diet included only 5% (0-8.5%) of marine sources (both eel and mullet).While local economic interests prompted ecological studies to assess whether catfish exerted a new and strong predatory pressure on eel, this study found that European catfish behaved as an opportunistic omnivore, and as such was not a direct threat as a predator on eel populations in the Camargue. Article in Journal/Newspaper Anguilla anguilla European eel Université de Nantes: HAL-UNIV-NANTES Aquatic Conservation: Marine and Freshwater Ecosystems 21 3 276 281 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
European eel Conservation European catfish Stable isotope analysis Gut contents Camargue [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis |
spellingShingle |
European eel Conservation European catfish Stable isotope analysis Gut contents Camargue [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis Martino, Aurelia Syväranta, Jari Crivelli, Alain Jean Céréghino, Régis Santoul, Frédéric Is European catfish a threat to eels in southern France? |
topic_facet |
European eel Conservation European catfish Stable isotope analysis Gut contents Camargue [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis |
description |
International audience European eel (Anguilla anguilla) is recognized as a critically endangered species in the northern hemisphere. Threats such as overfishing or pollution are well known as risks for eel populations. However, much less is known about the impact of introduced fish on European eels. In particular, introduced large-bodied predators could become new predators to eels.The potential impact of European catfish (Silurus glanis L) on an eel population in the Camargue, southern France was studied using a combination of stable isotope and gut content analyses.Only large bodied catfish (> 500 mm) can consume numerous fish prey. However, catfish mostly consumed crayfish (Procambarus clarkii), these prey items being found in 79% of the guts of the largest individuals. Eel was absent from the dissected catfish guts. A mixing model based on Bayesian inference revealed that catfish diet included only 5% (0-8.5%) of marine sources (both eel and mullet).While local economic interests prompted ecological studies to assess whether catfish exerted a new and strong predatory pressure on eel, this study found that European catfish behaved as an opportunistic omnivore, and as such was not a direct threat as a predator on eel populations in the Camargue. |
author2 |
Laboratoire Ecologie Fonctionnelle et Environnement (LEFE) Institut Ecologie et Environnement (INEE) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB) Leibniz Association Station Biologique de la Tour du Valat |
format |
Article in Journal/Newspaper |
author |
Martino, Aurelia Syväranta, Jari Crivelli, Alain Jean Céréghino, Régis Santoul, Frédéric |
author_facet |
Martino, Aurelia Syväranta, Jari Crivelli, Alain Jean Céréghino, Régis Santoul, Frédéric |
author_sort |
Martino, Aurelia |
title |
Is European catfish a threat to eels in southern France? |
title_short |
Is European catfish a threat to eels in southern France? |
title_full |
Is European catfish a threat to eels in southern France? |
title_fullStr |
Is European catfish a threat to eels in southern France? |
title_full_unstemmed |
Is European catfish a threat to eels in southern France? |
title_sort |
is european catfish a threat to eels in southern france? |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-03469135 https://hal.science/hal-03469135/document https://hal.science/hal-03469135/file/Martino_10155.pdf https://doi.org/10.1002/aqc.1177 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
ISSN: 1052-7613 EISSN: 1099-0755 Aquatic Conservation: Marine and Freshwater Ecosystems https://hal.science/hal-03469135 Aquatic Conservation: Marine and Freshwater Ecosystems, 2011, 21 (3), pp.276-281. ⟨10.1002/aqc.1177⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/aqc.1177 hal-03469135 https://hal.science/hal-03469135 https://hal.science/hal-03469135/document https://hal.science/hal-03469135/file/Martino_10155.pdf doi:10.1002/aqc.1177 OATAO: 10155 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/aqc.1177 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
21 |
container_issue |
3 |
container_start_page |
276 |
op_container_end_page |
281 |
_version_ |
1766401056512671744 |