Efficiency of a dual density studded fish pass designed to mitigate for impeded upstream passage of juvenile European eels (Anguilla anguilla) at a model Crump weir
Efficiency of a dual density studded fish pass designed to mitigate for impeded upstream passage of juvenile European eels (Anguilla anguilla) at a model Crump weir
This study demonstrated that juvenile (glass) eels utilised a specific substrate (eel tiles) to circumvent a model Crump weir under an experimental setting. Upstream passage efficiency was 0% and 67% for the unmodified (no studded eel tiles on the downstream face; control) and modified (with studded eel tiles on the downstream face; treatment) setups, respectively, and greater for a small (59%) compared to large (41%) stud configuration. Eels were active and motivated to ascend the weir during both control and treatment setups. Approach and attempt rates were elevated during the first few minutes of the treatment compared to control trials. Eels were edge oriented under both setups, and ascended the weir through the tiles during single burst swimming events (reaching estimated speeds of 68.5 cm s-1). Eel tiles may provide a cost effective solution for mitigating impacts of anthropogenic barriers to juvenile eel migration. Further research is required to determine passage efficiencies under higher flows, for a greater size range of eel, and for other migratory anguilliform fish (e.g. lamprey, Lampretra spp. and Petromyzon marinus L.). The performance of eel tiles should be validated through robust field studies.
barrier, behaviour, eel ladder, fish passage, flume, migration
307-316
Vowles, Andrew
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Don, A.M.
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Karageoropoulos, P.
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Worthington, T.A.
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Kemp, P.S.
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August 2015
Vowles, Andrew
c35c3a75-2199-4665-8340-e8ee7abc25f4
Don, A.M.
27e2d964-f23a-40d5-aaa8-030a3bd49216
Karageoropoulos, P.
aa5d32d2-d590-4aa0-b10e-1151452db8ac
Worthington, T.A.
8113f02a-e550-46a9-9c13-cab4044c3bc6
Kemp, P.S.
9e33fba6-cccf-4eb5-965b-b70e72b11cd7
Vowles, Andrew, Don, A.M., Karageoropoulos, P., Worthington, T.A. and Kemp, P.S.
(2015)
Efficiency of a dual density studded fish pass designed to mitigate for impeded upstream passage of juvenile European eels (Anguilla anguilla) at a model Crump weir.
Fisheries Management and Ecology, 22 (4), .
(doi:10.1111/fme.12128).
Abstract
This study demonstrated that juvenile (glass) eels utilised a specific substrate (eel tiles) to circumvent a model Crump weir under an experimental setting. Upstream passage efficiency was 0% and 67% for the unmodified (no studded eel tiles on the downstream face; control) and modified (with studded eel tiles on the downstream face; treatment) setups, respectively, and greater for a small (59%) compared to large (41%) stud configuration. Eels were active and motivated to ascend the weir during both control and treatment setups. Approach and attempt rates were elevated during the first few minutes of the treatment compared to control trials. Eels were edge oriented under both setups, and ascended the weir through the tiles during single burst swimming events (reaching estimated speeds of 68.5 cm s-1). Eel tiles may provide a cost effective solution for mitigating impacts of anthropogenic barriers to juvenile eel migration. Further research is required to determine passage efficiencies under higher flows, for a greater size range of eel, and for other migratory anguilliform fish (e.g. lamprey, Lampretra spp. and Petromyzon marinus L.). The performance of eel tiles should be validated through robust field studies.
Text
Vowles_et_al_accepted_MS.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 3 May 2015
e-pub ahead of print date: 6 July 2015
Published date: August 2015
Keywords:
barrier, behaviour, eel ladder, fish passage, flume, migration
Organisations:
Water & Environmental Engineering Group
Identifiers
Local EPrints ID: 377724
URI: http://eprints.soton.ac.uk/id/eprint/377724
ISSN: 0969-997X
PURE UUID: 79ddb46a-84bd-4ea5-9239-1ee9e2692a9d
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Date deposited: 03 Jun 2015 16:01
Last modified: 15 Mar 2024 03:34
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Contributors
Author:
A.M. Don
Author:
P. Karageoropoulos
Author:
T.A. Worthington
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