Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.)
International audience We defined a standardized method for discriminating candidate silver eels that may undergo catadromous migration in the following season from the sedentary fraction of a population. A combination of two qualitative criteria (state of differentiation of the lateral line and col...
Published in: | Archiv für Hydrobiologie |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2005
|
Subjects: | |
Online Access: | https://hal.science/hal-00788600 https://hal.science/hal-00788600/document https://hal.science/hal-00788600/file/acou_6198.pdf https://doi.org/10.1127/0003-9136/2005/0164-0237 |
id |
ftunivrennes1hal:oai:HAL:hal-00788600v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivrennes1hal:oai:HAL:hal-00788600v1 2024-04-28T07:55:10+00:00 Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) Acou, Anthony Boury, Pauline Laffaille, Pascal Crivelli, Alain Jean Feunteun, Eric Biodiversité fonctionnelle et gestion des territoires Université de Rennes (UR) Laboratoire de biologie et environnement marins - LBEM (LBEML) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Station Biologique de la Tour du Valat 2005 https://hal.science/hal-00788600 https://hal.science/hal-00788600/document https://hal.science/hal-00788600/file/acou_6198.pdf https://doi.org/10.1127/0003-9136/2005/0164-0237 en eng HAL CCSD Schweizerbart'sche Verlagsbuchhandlung info:eu-repo/semantics/altIdentifier/doi/10.1127/0003-9136/2005/0164-0237 hal-00788600 https://hal.science/hal-00788600 https://hal.science/hal-00788600/document https://hal.science/hal-00788600/file/acou_6198.pdf doi:10.1127/0003-9136/2005/0164-0237 OATAO: 6198 info:eu-repo/semantics/OpenAccess ISSN: 0003-9136 Archiv fur Hydrobiologie https://hal.science/hal-00788600 Archiv fur Hydrobiologie, 2005, vol. 164, pp.237-255. ⟨10.1127/0003-9136/2005/0164-0237⟩ Yellow eel Silver eel Discrimination Multicriteria approach Silvering process PIT-tags [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2005 ftunivrennes1hal https://doi.org/10.1127/0003-9136/2005/0164-0237 2024-04-04T16:59:29Z International audience We defined a standardized method for discriminating candidate silver eels that may undergo catadromous migration in the following season from the sedentary fraction of a population. A combination of two qualitative criteria (state of differentiation of the lateral line and colour contrast) and one quantitative criterion (Ocular Index OI) was used to determine the development toward silvering. In the non-migratory phase, we found a gradient of the three criteria between yellow (0 criterion), presilver (1 to 2 criteria) and silver (3 criteria) eels. In the migrant phase, silver eels had ended their metamorphosis process and were characterized at the same time by the presence of the 3 silvering criteria. A mark-recapture survey using PIT-tags provided evidence that only identified silver eels (3 silvering criteria present) in the catchment actually emigrated the following season. Moreover, the use of a single criterion of silvering among the three generated large variation in the estimated proportion of candidates for emigration which varied between -22% and +63 %. Such a result confirmed that a multicriteria approach is needed to characterize in a standard way the potentially migrating silver eel. Article in Journal/Newspaper Anguilla anguilla Université de Rennes 1: Publications scientifiques (HAL) Archiv für Hydrobiologie 164 2 237 255 |
institution |
Open Polar |
collection |
Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
Yellow eel Silver eel Discrimination Multicriteria approach Silvering process PIT-tags [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
Yellow eel Silver eel Discrimination Multicriteria approach Silvering process PIT-tags [SDV.EE]Life Sciences [q-bio]/Ecology environment Acou, Anthony Boury, Pauline Laffaille, Pascal Crivelli, Alain Jean Feunteun, Eric Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
topic_facet |
Yellow eel Silver eel Discrimination Multicriteria approach Silvering process PIT-tags [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience We defined a standardized method for discriminating candidate silver eels that may undergo catadromous migration in the following season from the sedentary fraction of a population. A combination of two qualitative criteria (state of differentiation of the lateral line and colour contrast) and one quantitative criterion (Ocular Index OI) was used to determine the development toward silvering. In the non-migratory phase, we found a gradient of the three criteria between yellow (0 criterion), presilver (1 to 2 criteria) and silver (3 criteria) eels. In the migrant phase, silver eels had ended their metamorphosis process and were characterized at the same time by the presence of the 3 silvering criteria. A mark-recapture survey using PIT-tags provided evidence that only identified silver eels (3 silvering criteria present) in the catchment actually emigrated the following season. Moreover, the use of a single criterion of silvering among the three generated large variation in the estimated proportion of candidates for emigration which varied between -22% and +63 %. Such a result confirmed that a multicriteria approach is needed to characterize in a standard way the potentially migrating silver eel. |
author2 |
Biodiversité fonctionnelle et gestion des territoires Université de Rennes (UR) Laboratoire de biologie et environnement marins - LBEM (LBEML) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Station Biologique de la Tour du Valat |
format |
Article in Journal/Newspaper |
author |
Acou, Anthony Boury, Pauline Laffaille, Pascal Crivelli, Alain Jean Feunteun, Eric |
author_facet |
Acou, Anthony Boury, Pauline Laffaille, Pascal Crivelli, Alain Jean Feunteun, Eric |
author_sort |
Acou, Anthony |
title |
Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
title_short |
Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
title_full |
Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
title_fullStr |
Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
title_full_unstemmed |
Towards a standardized characterization of the potentially migrating silver European eel (Anguilla anguilla L.) |
title_sort |
towards a standardized characterization of the potentially migrating silver european eel (anguilla anguilla l.) |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00788600 https://hal.science/hal-00788600/document https://hal.science/hal-00788600/file/acou_6198.pdf https://doi.org/10.1127/0003-9136/2005/0164-0237 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0003-9136 Archiv fur Hydrobiologie https://hal.science/hal-00788600 Archiv fur Hydrobiologie, 2005, vol. 164, pp.237-255. ⟨10.1127/0003-9136/2005/0164-0237⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1127/0003-9136/2005/0164-0237 hal-00788600 https://hal.science/hal-00788600 https://hal.science/hal-00788600/document https://hal.science/hal-00788600/file/acou_6198.pdf doi:10.1127/0003-9136/2005/0164-0237 OATAO: 6198 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1127/0003-9136/2005/0164-0237 |
container_title |
Archiv für Hydrobiologie |
container_volume |
164 |
container_issue |
2 |
container_start_page |
237 |
op_container_end_page |
255 |
_version_ |
1797578802968133632 |