Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields
Anthropogenic structures (e.g. weirs and dams) fragment river networks and restrict the movement of migratory fish. Poor understanding of behavioural response to hydrodynamic cues at structures currently limits the development of effective barrier mitigation measures. This study aimed to assess the...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Language: | English |
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Online Access: | http://hdl.handle.net/11583/2649860 https://doi.org/10.1098/rspb.2015.1098 http://rspb.royalsocietypublishing.org/ |
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ftpoltorinoiris:oai:iris.polito.it:11583/2649860 2024-02-04T09:52:55+01:00 Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields Piper, Adam T Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. MANES, COSTANTINO Piper, Adam T Manes, Costantino Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. 2015 STAMPA http://hdl.handle.net/11583/2649860 https://doi.org/10.1098/rspb.2015.1098 http://rspb.royalsocietypublishing.org/ eng eng Royal Society of London info:eu-repo/semantics/altIdentifier/wos/WOS:000358735700026 volume:282 issue:1811 firstpage:1 lastpage:9 numberofpages:9 journal:PROCEEDINGS - ROYAL SOCIETY. BIOLOGICAL SCIENCES http://hdl.handle.net/11583/2649860 doi:10.1098/rspb.2015.1098 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84936880649 http://rspb.royalsocietypublishing.org/ Acoustic telemetry Behavioural fish guidance Computational fluid dynamic Ecohydraulic Hydrodynamic Hydropower Anguilla Animal Endangered Specie England River Animal Migration Water Movement Agricultural and Biological Sciences (all) Biochemistry Genetics and Molecular Biology (all) 2300 Immunology and Microbiology (all) Medicine (all) info:eu-repo/semantics/article 2015 ftpoltorinoiris https://doi.org/10.1098/rspb.2015.1098 2024-01-09T23:17:30Z Anthropogenic structures (e.g. weirs and dams) fragment river networks and restrict the movement of migratory fish. Poor understanding of behavioural response to hydrodynamic cues at structures currently limits the development of effective barrier mitigation measures. This study aimed to assess the effect of flow constriction and associated flow patterns on eel behaviour during downstream migration. In a field experiment, we tracked the movements of 40 tagged adult European eels (Anguilla anguilla) through the forebay of a redundant hydropower intake under two manipulated hydrodynamic treatments. Interrogation of fish trajectories in relation to measured and modelled water velocities provided new insights into behaviour, fundamental for developing passage technologies for this endangered species. Eels rarely followed direct routes through the site. Initially, fish aligned with streamlines near the channel banks and approached the intake semi-passively. A switch to more energetically costly avoidance behaviours occurred on encountering constricted flow, prior to physical contact with structures. Under high water velocity gradients, fish then tended to escape rapidly back upstream, whereas exploratory ‘search’ behaviour was common when acceleration was low. This study highlights the importance of hydrodynamics in informing eel behaviour. This offers potential to develop behavioural guidance, improve fish passage solutions and enhance traditional physical screening. Article in Journal/Newspaper Anguilla anguilla European eel PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) Proceedings of the Royal Society B: Biological Sciences 282 1811 20151098 |
institution |
Open Polar |
collection |
PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) |
op_collection_id |
ftpoltorinoiris |
language |
English |
topic |
Acoustic telemetry Behavioural fish guidance Computational fluid dynamic Ecohydraulic Hydrodynamic Hydropower Anguilla Animal Endangered Specie England River Animal Migration Water Movement Agricultural and Biological Sciences (all) Biochemistry Genetics and Molecular Biology (all) 2300 Immunology and Microbiology (all) Medicine (all) |
spellingShingle |
Acoustic telemetry Behavioural fish guidance Computational fluid dynamic Ecohydraulic Hydrodynamic Hydropower Anguilla Animal Endangered Specie England River Animal Migration Water Movement Agricultural and Biological Sciences (all) Biochemistry Genetics and Molecular Biology (all) 2300 Immunology and Microbiology (all) Medicine (all) Piper, Adam T Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. MANES, COSTANTINO Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
topic_facet |
Acoustic telemetry Behavioural fish guidance Computational fluid dynamic Ecohydraulic Hydrodynamic Hydropower Anguilla Animal Endangered Specie England River Animal Migration Water Movement Agricultural and Biological Sciences (all) Biochemistry Genetics and Molecular Biology (all) 2300 Immunology and Microbiology (all) Medicine (all) |
description |
Anthropogenic structures (e.g. weirs and dams) fragment river networks and restrict the movement of migratory fish. Poor understanding of behavioural response to hydrodynamic cues at structures currently limits the development of effective barrier mitigation measures. This study aimed to assess the effect of flow constriction and associated flow patterns on eel behaviour during downstream migration. In a field experiment, we tracked the movements of 40 tagged adult European eels (Anguilla anguilla) through the forebay of a redundant hydropower intake under two manipulated hydrodynamic treatments. Interrogation of fish trajectories in relation to measured and modelled water velocities provided new insights into behaviour, fundamental for developing passage technologies for this endangered species. Eels rarely followed direct routes through the site. Initially, fish aligned with streamlines near the channel banks and approached the intake semi-passively. A switch to more energetically costly avoidance behaviours occurred on encountering constricted flow, prior to physical contact with structures. Under high water velocity gradients, fish then tended to escape rapidly back upstream, whereas exploratory ‘search’ behaviour was common when acceleration was low. This study highlights the importance of hydrodynamics in informing eel behaviour. This offers potential to develop behavioural guidance, improve fish passage solutions and enhance traditional physical screening. |
author2 |
Piper, Adam T Manes, Costantino Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. |
format |
Article in Journal/Newspaper |
author |
Piper, Adam T Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. MANES, COSTANTINO |
author_facet |
Piper, Adam T Siniscalchi, Fabio Marion, Andrea Wright, Rosalind M. Kemp, Paul S. MANES, COSTANTINO |
author_sort |
Piper, Adam T |
title |
Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
title_short |
Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
title_full |
Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
title_fullStr |
Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
title_full_unstemmed |
Response of seaward-migrating european eel (Anguilla anguilla) to manipulated flow fields |
title_sort |
response of seaward-migrating european eel (anguilla anguilla) to manipulated flow fields |
publisher |
Royal Society of London |
publishDate |
2015 |
url |
http://hdl.handle.net/11583/2649860 https://doi.org/10.1098/rspb.2015.1098 http://rspb.royalsocietypublishing.org/ |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000358735700026 volume:282 issue:1811 firstpage:1 lastpage:9 numberofpages:9 journal:PROCEEDINGS - ROYAL SOCIETY. BIOLOGICAL SCIENCES http://hdl.handle.net/11583/2649860 doi:10.1098/rspb.2015.1098 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84936880649 http://rspb.royalsocietypublishing.org/ |
op_doi |
https://doi.org/10.1098/rspb.2015.1098 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
282 |
container_issue |
1811 |
container_start_page |
20151098 |
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