Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge
The European eel (Anguilla anguilla) has been in steep decline for several decades. Fisheries and hydropower-induced mortality presumably play an important role during the downstream migration of silver eels, and downstream-migrating silver eels must make various navigation and route-selection decis...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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2007
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Online Access: | https://research.wur.nl/en/publications/just-go-with-the-flow-route-selection-and-mortality-during-downst https://doi.org/10.1093/icesjms/fsm132 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/358934 2024-01-14T09:59:15+01:00 Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge Jansen, H.M. Winter, H.V. Bruijs, M.C.M. Polman, H.J.G. 2007 application/pdf https://research.wur.nl/en/publications/just-go-with-the-flow-route-selection-and-mortality-during-downst https://doi.org/10.1093/icesjms/fsm132 en eng https://edepot.wur.nl/41185 https://research.wur.nl/en/publications/just-go-with-the-flow-route-selection-and-mortality-during-downst doi:10.1093/icesjms/fsm132 info:eu-repo/semantics/restrictedAccess Wageningen University & Research ICES Journal of Marine Science 64 (2007) 7 ISSN: 1054-3139 anguilla-anguilla hydropower passage seaward migration telemetry info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2007 ftunivwagenin https://doi.org/10.1093/icesjms/fsm132 2023-12-20T23:19:35Z The European eel (Anguilla anguilla) has been in steep decline for several decades. Fisheries and hydropower-induced mortality presumably play an important role during the downstream migration of silver eels, and downstream-migrating silver eels must make various navigation and route-selection decisions to reach the sea. We examined the influence of river discharge on route selection of silver eels. To quantify the impact of hydropower and fisheries on silver eel mortality, radio-telemetry experiments were performed in the River Meuse in 2002 and 2004, surgically implanting 300 silver eels with Nedap-transponders. Route selection and passage behaviour near detection stations was assessed. Silver eels were distributed over the alternative migration routes in the river in proportion to the discharge until the silver eels reached the entrance to the turbines. The eels altered their behaviour when approaching the turbines of hydropower plants and showed stationary and recurrent behaviour. We discuss the consequences of this on route selection and mortality rates caused by hydropower facilities and fisheries. Article in Journal/Newspaper Anguilla anguilla Wageningen UR (University & Research Centre): Digital Library ICES Journal of Marine Science 64 7 1437 1443 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
anguilla-anguilla hydropower passage seaward migration telemetry |
spellingShingle |
anguilla-anguilla hydropower passage seaward migration telemetry Jansen, H.M. Winter, H.V. Bruijs, M.C.M. Polman, H.J.G. Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
topic_facet |
anguilla-anguilla hydropower passage seaward migration telemetry |
description |
The European eel (Anguilla anguilla) has been in steep decline for several decades. Fisheries and hydropower-induced mortality presumably play an important role during the downstream migration of silver eels, and downstream-migrating silver eels must make various navigation and route-selection decisions to reach the sea. We examined the influence of river discharge on route selection of silver eels. To quantify the impact of hydropower and fisheries on silver eel mortality, radio-telemetry experiments were performed in the River Meuse in 2002 and 2004, surgically implanting 300 silver eels with Nedap-transponders. Route selection and passage behaviour near detection stations was assessed. Silver eels were distributed over the alternative migration routes in the river in proportion to the discharge until the silver eels reached the entrance to the turbines. The eels altered their behaviour when approaching the turbines of hydropower plants and showed stationary and recurrent behaviour. We discuss the consequences of this on route selection and mortality rates caused by hydropower facilities and fisheries. |
format |
Article in Journal/Newspaper |
author |
Jansen, H.M. Winter, H.V. Bruijs, M.C.M. Polman, H.J.G. |
author_facet |
Jansen, H.M. Winter, H.V. Bruijs, M.C.M. Polman, H.J.G. |
author_sort |
Jansen, H.M. |
title |
Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
title_short |
Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
title_full |
Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
title_fullStr |
Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
title_full_unstemmed |
Just go with the flow? Route selection and mortality during downstream migration of silver eels in relation to river discharge |
title_sort |
just go with the flow? route selection and mortality during downstream migration of silver eels in relation to river discharge |
publishDate |
2007 |
url |
https://research.wur.nl/en/publications/just-go-with-the-flow-route-selection-and-mortality-during-downst https://doi.org/10.1093/icesjms/fsm132 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ICES Journal of Marine Science 64 (2007) 7 ISSN: 1054-3139 |
op_relation |
https://edepot.wur.nl/41185 https://research.wur.nl/en/publications/just-go-with-the-flow-route-selection-and-mortality-during-downst doi:10.1093/icesjms/fsm132 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1093/icesjms/fsm132 |
container_title |
ICES Journal of Marine Science |
container_volume |
64 |
container_issue |
7 |
container_start_page |
1437 |
op_container_end_page |
1443 |
_version_ |
1788057604989124608 |