European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters
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. Intensiv...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2000
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Online Access: | http://oatao.univ-toulouse.fr/6151/ http://oatao.univ-toulouse.fr/6151/1/feunteun_6151.pdf https://doi.org/10.1139/f00-096 |
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ftunivtoulouseoa:oai:oatao.univ-toulouse.fr:6151 2023-05-15T13:27:03+02:00 European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine Centre National de la Recherche Scientifique - CNRS (FRANCE) Fish-Pass (FRANCE) Université de Rennes 1 (FRANCE) 2000 application/pdf http://oatao.univ-toulouse.fr/6151/ http://oatao.univ-toulouse.fr/6151/1/feunteun_6151.pdf https://doi.org/10.1139/f00-096 en eng NRC Research Press http://oatao.univ-toulouse.fr/6151/1/feunteun_6151.pdf HAL : hal-00735979 Feunteun, Eric and Acou, Anthony and Laffaille, Pascal and Legault, Antoine. European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters. (2000) Canadian Journal of Fisheries and Aquatic Sciences (CJFAS), 57 (8). ISSN 1205-7533 info:eu-repo/semantics/openAccess Ecosystèmes Sciences et techniques des pêches Zootechnie European eel Silver eel Migration Article PeerReviewed info:eu-repo/semantics/article 2000 ftunivtoulouseoa https://doi.org/10.1139/f00-096 2019-08-29T11:17:44Z 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 OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) Canadian Journal of Fisheries and Aquatic Sciences 57 8 1627 1635 |
institution |
Open Polar |
collection |
OATAO (Open Archive Toulouse Archive Ouverte - Université de Toulouse) |
op_collection_id |
ftunivtoulouseoa |
language |
English |
topic |
Ecosystèmes Sciences et techniques des pêches Zootechnie European eel Silver eel Migration |
spellingShingle |
Ecosystèmes Sciences et techniques des pêches Zootechnie European eel Silver eel Migration Feunteun, Eric Acou, Anthony Laffaille, Pascal Legault, Antoine European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters |
topic_facet |
Ecosystèmes Sciences et techniques des pêches Zootechnie European eel Silver eel Migration |
description |
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 |
Centre National de la Recherche Scientifique - CNRS (FRANCE) Fish-Pass (FRANCE) Université de Rennes 1 (FRANCE) |
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 |
NRC Research Press |
publishDate |
2000 |
url |
http://oatao.univ-toulouse.fr/6151/ http://oatao.univ-toulouse.fr/6151/1/feunteun_6151.pdf https://doi.org/10.1139/f00-096 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
http://oatao.univ-toulouse.fr/6151/1/feunteun_6151.pdf HAL : hal-00735979 Feunteun, Eric and Acou, Anthony and Laffaille, Pascal and Legault, Antoine. European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters. (2000) Canadian Journal of Fisheries and Aquatic Sciences (CJFAS), 57 (8). ISSN 1205-7533 |
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_ |
1766396065787936768 |