Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms
Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. Acoustic receivers were deployed at 5 known cod spawning grounds and 6 salmon Salmo...
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Online Access: | http://hdl.handle.net/10852/97990 https://doi.org/10.3354/aei00440 |
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ftoslouniv:oai:www.duo.uio.no:10852/97990 2023-05-15T15:27:38+02:00 Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms ENEngelskEnglishAttraction of cod Gadus morhua from coastal spawning grounds to salmon farms Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland 2022-11-30T13:44:05Z http://hdl.handle.net/10852/97990 https://doi.org/10.3354/aei00440 EN eng Inter-Research (IR) FHF/901230 Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland . Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms. Aquaculture Environment Interactions. 2022, 14, 229-242 http://hdl.handle.net/10852/97990 2085762 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquaculture Environment Interactions&rft.volume=14&rft.spage=229&rft.date=2022 Aquaculture Environment Interactions 14 229 242 https://doi.org/10.3354/aei00440 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1869-215X Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.3354/aei00440 2022-12-14T23:36:12Z Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. Acoustic receivers were deployed at 5 known cod spawning grounds and 6 salmon Salmo salar farms located at varying distances from these grounds in a mid-Norway study site. Cod were caught at each spawning ground annually from 2017-2019, fitted with acoustic transmitters and released (n = 535). A total of 289 tagged cod (54%) were detected at the salmon farms, with more cod detected at farms closest to the focal spawning grounds and at operational farms. The latter result is likely linked to the availability of feeding opportunities at farm locations. Those cod that were detected by the receivers spent less time at farms farther from their release locations. For the farm-associated cod, 70% were detected for <1 wk at the farms. However, 48 cod spent >1 mo close to the farms, with 1 individual staying 720 d underneath the farm. A total of 135 cod visited 2 or more farms, with farms in proximity more connected in terms of inter-farm movement. Some of the cod utilizing these local spawning grounds likely have considerable dietary input from salmon feed. Article in Journal/Newspaper atlantic cod Gadus morhua Salmo salar Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Aquaculture Environment Interactions 14 229 242 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. Acoustic receivers were deployed at 5 known cod spawning grounds and 6 salmon Salmo salar farms located at varying distances from these grounds in a mid-Norway study site. Cod were caught at each spawning ground annually from 2017-2019, fitted with acoustic transmitters and released (n = 535). A total of 289 tagged cod (54%) were detected at the salmon farms, with more cod detected at farms closest to the focal spawning grounds and at operational farms. The latter result is likely linked to the availability of feeding opportunities at farm locations. Those cod that were detected by the receivers spent less time at farms farther from their release locations. For the farm-associated cod, 70% were detected for <1 wk at the farms. However, 48 cod spent >1 mo close to the farms, with 1 individual staying 720 d underneath the farm. A total of 135 cod visited 2 or more farms, with farms in proximity more connected in terms of inter-farm movement. Some of the cod utilizing these local spawning grounds likely have considerable dietary input from salmon feed. |
format |
Article in Journal/Newspaper |
author |
Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland |
spellingShingle |
Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
author_facet |
Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland |
author_sort |
Skjæraasen, Jon Egil |
title |
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
title_short |
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
title_full |
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
title_fullStr |
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
title_full_unstemmed |
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms |
title_sort |
attraction of cod gadus morhua from coastal spawning grounds to salmon farms |
publisher |
Inter-Research (IR) |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/97990 https://doi.org/10.3354/aei00440 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua Salmo salar |
genre_facet |
atlantic cod Gadus morhua Salmo salar |
op_source |
1869-215X |
op_relation |
FHF/901230 Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr Meier, Sonnich Dunlop, Katherine Mary van der Meeren, Terje Keeley, Nigel B. Myksvoll, Mari Skuggedal Dahle, Geir Moland, Even Nilsen, Rune Elvik, Kristine Marit Schrøder Bannister, Raymond Olsen, Esben Moland . Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms. Aquaculture Environment Interactions. 2022, 14, 229-242 http://hdl.handle.net/10852/97990 2085762 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Aquaculture Environment Interactions&rft.volume=14&rft.spage=229&rft.date=2022 Aquaculture Environment Interactions 14 229 242 https://doi.org/10.3354/aei00440 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00440 |
container_title |
Aquaculture Environment Interactions |
container_volume |
14 |
container_start_page |
229 |
op_container_end_page |
242 |
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1766358055817052160 |