European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters
International audience This paper describes the assessment of silver European eel (Anguilla anguilla) escapement based on a "sedentary" population fraction analysis in a 60-km2 watershed of northern Brittany (France). Downstream migration fluxes were monitored using eel traps and related t...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-00735979 https://hal.science/hal-00735979/document https://hal.science/hal-00735979/file/feunteun_6151.pdf https://doi.org/10.1139/f00-096 |
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ftunivrennes2hal:oai:HAL:hal-00735979v1 2024-05-12T07:52:57+00:00 European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Fish Pass 2000 https://hal.science/hal-00735979 https://hal.science/hal-00735979/document https://hal.science/hal-00735979/file/feunteun_6151.pdf https://doi.org/10.1139/f00-096 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/f00-096 hal-00735979 https://hal.science/hal-00735979 https://hal.science/hal-00735979/document https://hal.science/hal-00735979/file/feunteun_6151.pdf doi:10.1139/f00-096 OATAO: 6151 info:eu-repo/semantics/OpenAccess ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.science/hal-00735979 Canadian Journal of Fisheries and Aquatic Sciences, 2000, vol. 57, ⟨10.1139/f00-096⟩ European eel Silver eel Migration [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny info:eu-repo/semantics/article Journal articles 2000 ftunivrennes2hal https://doi.org/10.1139/f00-096 2024-04-17T16:16:20Z International audience This paper describes the assessment of silver European eel (Anguilla anguilla) escapement based on a "sedentary" population fraction analysis in a 60-km2 watershed of northern Brittany (France). Downstream migration fluxes were monitored using eel traps and related to environmental factors. Intensive electrofishing and fyke-net fishing were conducted to assess eel biomass, densities, and population structure. A total of 564 eels, including 81 silver eels, were PIT tagged. In 1996, 616 eels were caught in the catchment including 68 silver eels (11%). During the following downstream migration period, 12 of the PIT-tagged silver eels, among a total of 678, were recaptured in the downstream traps. Seven were recaptured in the catchment in 1997. It was shown that (i) only about 20% of the silver eels present in the catchment emigrated during the following year, (ii) 12% stayed in the catchment including two (3.4%) that recovered yellow eel characteristics, and (iii) the other eels either died or settled in the catchment but were not recaptured. It was also estimated that 2% (650 eels) of the population (34 000 eels) among 3000 silver eels considered "emigration candidates" emigrated each year. Article in Journal/Newspaper Anguilla anguilla Archive Ouverte de l'Université Rennes (HAL) Canadian Journal of Fisheries and Aquatic Sciences 57 8 1627 1635 |
institution |
Open Polar |
collection |
Archive Ouverte de l'Université Rennes (HAL) |
op_collection_id |
ftunivrennes2hal |
language |
English |
topic |
European eel Silver eel Migration [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny |
spellingShingle |
European eel Silver eel Migration [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
topic_facet |
European eel Silver eel Migration [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny |
description |
International audience This paper describes the assessment of silver European eel (Anguilla anguilla) escapement based on a "sedentary" population fraction analysis in a 60-km2 watershed of northern Brittany (France). Downstream migration fluxes were monitored using eel traps and related to environmental factors. Intensive electrofishing and fyke-net fishing were conducted to assess eel biomass, densities, and population structure. A total of 564 eels, including 81 silver eels, were PIT tagged. In 1996, 616 eels were caught in the catchment including 68 silver eels (11%). During the following downstream migration period, 12 of the PIT-tagged silver eels, among a total of 678, were recaptured in the downstream traps. Seven were recaptured in the catchment in 1997. It was shown that (i) only about 20% of the silver eels present in the catchment emigrated during the following year, (ii) 12% stayed in the catchment including two (3.4%) that recovered yellow eel characteristics, and (iii) the other eels either died or settled in the catchment but were not recaptured. It was also estimated that 2% (650 eels) of the population (34 000 eels) among 3000 silver eels considered "emigration candidates" emigrated each year. |
author2 |
Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Fish Pass |
format |
Article in Journal/Newspaper |
author |
Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine |
author_facet |
Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine |
author_sort |
Feunteun, Eric |
title |
European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
title_short |
European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
title_full |
European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
title_fullStr |
European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
title_full_unstemmed |
European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
title_sort |
european eel (anguilla anguilla): prediction of spawner escapement from continental population parameters |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.science/hal-00735979 https://hal.science/hal-00735979/document https://hal.science/hal-00735979/file/feunteun_6151.pdf https://doi.org/10.1139/f00-096 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.science/hal-00735979 Canadian Journal of Fisheries and Aquatic Sciences, 2000, vol. 57, ⟨10.1139/f00-096⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/f00-096 hal-00735979 https://hal.science/hal-00735979 https://hal.science/hal-00735979/document https://hal.science/hal-00735979/file/feunteun_6151.pdf doi:10.1139/f00-096 OATAO: 6151 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1139/f00-096 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
8 |
container_start_page |
1627 |
op_container_end_page |
1635 |
_version_ |
1798839085164396544 |