Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data
International audience Current knowledge about the downstream migration of sexually mature European eels (Anguilla anguilla) remains incomplete, particularly in still water habitats such as lakes and wetlands subject to water level management. However, for the management of this endangered species,...
Published in: | Ecology of Freshwater Fish |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://mnhn.hal.science/mnhn-04285049 https://mnhn.hal.science/mnhn-04285049/document https://mnhn.hal.science/mnhn-04285049/file/Trancart%20et%20al%202017_0.pdf https://doi.org/10.1111/eff.12371 |
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ftccsdartic:oai:HAL:mnhn-04285049v1 2024-02-27T08:33:00+00:00 Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data Trancart, Thomas Feunteun, Eric Danet, Valentin Carpentier, Alexandre Mazel, Virgile Charrier, Fabien Druet, Morgan Acou, Anthony Patrimoine naturel (PatriNat) Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Agence Française pour la Biodiversité (AFB) 2017-07-31 https://mnhn.hal.science/mnhn-04285049 https://mnhn.hal.science/mnhn-04285049/document https://mnhn.hal.science/mnhn-04285049/file/Trancart%20et%20al%202017_0.pdf https://doi.org/10.1111/eff.12371 en eng HAL CCSD Consejo Superior de Investigaciones Científicas info:eu-repo/semantics/altIdentifier/doi/10.1111/eff.12371 mnhn-04285049 https://mnhn.hal.science/mnhn-04285049 https://mnhn.hal.science/mnhn-04285049/document https://mnhn.hal.science/mnhn-04285049/file/Trancart%20et%20al%202017_0.pdf doi:10.1111/eff.12371 info:eu-repo/semantics/OpenAccess ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://mnhn.hal.science/mnhn-04285049 Ecology of Freshwater Fish, 2017, 27 (2), pp.570 - 579. ⟨10.1111/eff.12371⟩ Anguilla anguilla cues silver eel migration triggers [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2017 ftccsdartic https://doi.org/10.1111/eff.12371 2024-01-28T00:22:22Z International audience Current knowledge about the downstream migration of sexually mature European eels (Anguilla anguilla) remains incomplete, particularly in still water habitats such as lakes and wetlands subject to water level management. However, for the management of this endangered species, it is important to understand migration dynamics, and contribution to the breeding stock. This study aimed to assess the parameters that trigger and guide the migration of silver eels in the largest floodplain lake and associated wetlands in France (the sluice regulated Grand-Lieu Lake). A telemetry survey of 50 acoustic and PIT-tagged female silver eels was performed during the 2015-2016 migration period. We deployed a novel telemetric approach, using receivers to delimit several restricted virtual boxes to determine the instantaneous location of individuals and to transform simple discrete telemetric data into presence/absence data. The low numbers leaving the lake centre are probably explained by the lack of orienting water flows or other environmental clues, but whilst the fate of 34% (17/50) of the tagged eels is unknown, 18% (9/50) were caught by commercial fishermen. Modelling showed that detections were not clearly associated with environmental factors typically involved in riverine migrations (e.g. current velocity, atmospheric pressure and temperature) but they were particularly associated with higher and increasing water levels and, for eels exiting the lake, a sharp increase when sluice gates were opened to an effective gap of >75 cm. It is concluded that management of water levels and sluice gate opening during the migration period might aid escapement of silver eels. Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Ecology of Freshwater Fish 27 2 570 579 |
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 cues silver eel migration triggers [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Anguilla anguilla cues silver eel migration triggers [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology Trancart, Thomas Feunteun, Eric Danet, Valentin Carpentier, Alexandre Mazel, Virgile Charrier, Fabien Druet, Morgan Acou, Anthony Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
topic_facet |
Anguilla anguilla cues silver eel migration triggers [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Current knowledge about the downstream migration of sexually mature European eels (Anguilla anguilla) remains incomplete, particularly in still water habitats such as lakes and wetlands subject to water level management. However, for the management of this endangered species, it is important to understand migration dynamics, and contribution to the breeding stock. This study aimed to assess the parameters that trigger and guide the migration of silver eels in the largest floodplain lake and associated wetlands in France (the sluice regulated Grand-Lieu Lake). A telemetry survey of 50 acoustic and PIT-tagged female silver eels was performed during the 2015-2016 migration period. We deployed a novel telemetric approach, using receivers to delimit several restricted virtual boxes to determine the instantaneous location of individuals and to transform simple discrete telemetric data into presence/absence data. The low numbers leaving the lake centre are probably explained by the lack of orienting water flows or other environmental clues, but whilst the fate of 34% (17/50) of the tagged eels is unknown, 18% (9/50) were caught by commercial fishermen. Modelling showed that detections were not clearly associated with environmental factors typically involved in riverine migrations (e.g. current velocity, atmospheric pressure and temperature) but they were particularly associated with higher and increasing water levels and, for eels exiting the lake, a sharp increase when sluice gates were opened to an effective gap of >75 cm. It is concluded that management of water levels and sluice gate opening during the migration period might aid escapement of silver eels. |
author2 |
Patrimoine naturel (PatriNat) Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Agence Française pour la Biodiversité (AFB) |
format |
Article in Journal/Newspaper |
author |
Trancart, Thomas Feunteun, Eric Danet, Valentin Carpentier, Alexandre Mazel, Virgile Charrier, Fabien Druet, Morgan Acou, Anthony |
author_facet |
Trancart, Thomas Feunteun, Eric Danet, Valentin Carpentier, Alexandre Mazel, Virgile Charrier, Fabien Druet, Morgan Acou, Anthony |
author_sort |
Trancart, Thomas |
title |
Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
title_short |
Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
title_full |
Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
title_fullStr |
Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
title_full_unstemmed |
Migration behaviour and escapement of European silver eels from a large lake and wetland system subject to water level management (Grand‐Lieu Lake, France): New insights from regulated acoustic telemetry data |
title_sort |
migration behaviour and escapement of european silver eels from a large lake and wetland system subject to water level management (grand‐lieu lake, france): new insights from regulated acoustic telemetry data |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://mnhn.hal.science/mnhn-04285049 https://mnhn.hal.science/mnhn-04285049/document https://mnhn.hal.science/mnhn-04285049/file/Trancart%20et%20al%202017_0.pdf https://doi.org/10.1111/eff.12371 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0906-6691 EISSN: 1600-0633 Ecology of Freshwater Fish https://mnhn.hal.science/mnhn-04285049 Ecology of Freshwater Fish, 2017, 27 (2), pp.570 - 579. ⟨10.1111/eff.12371⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/eff.12371 mnhn-04285049 https://mnhn.hal.science/mnhn-04285049 https://mnhn.hal.science/mnhn-04285049/document https://mnhn.hal.science/mnhn-04285049/file/Trancart%20et%20al%202017_0.pdf doi:10.1111/eff.12371 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/eff.12371 |
container_title |
Ecology of Freshwater Fish |
container_volume |
27 |
container_issue |
2 |
container_start_page |
570 |
op_container_end_page |
579 |
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1792043332715675648 |