Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics
Salmon farming in marine net pens is a major activity in many temperate regions. This industry may affect coastal ecosystems in several ways, such as with waste pollution and parasite spillover. Less is known about the extent to which salmon farming disrupts the use of inshore spawning grounds by wi...
Published in: | Aquaculture Environment Interactions |
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Language: | English |
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Online Access: | http://hdl.handle.net/10852/89334 http://urn.nb.no/URN:NBN:no-91944 https://doi.org/10.3354/AEI00415 |
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ftoslouniv:oai:www.duo.uio.no:10852/89334 2023-05-15T15:27:19+02:00 Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr 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 2021-11-05T13:11:28Z http://hdl.handle.net/10852/89334 http://urn.nb.no/URN:NBN:no-91944 https://doi.org/10.3354/AEI00415 EN eng Inter-Research (IR) HAVFORSK/14837-01 FHF/901230 http://urn.nb.no/URN:NBN:no-91944 Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr 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 . Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics. Aquaculture Environment Interactions. 2021, 13, 399-412 http://hdl.handle.net/10852/89334 1951798 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=13&rft.spage=399&rft.date=2021 Aquaculture Environment Interactions 13 399 412 https://doi.org/10.3354/AEI00415 URN:NBN:no-91944 Fulltext https://www.duo.uio.no/bitstream/handle/10852/89334/2/q013p399.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1869-215X Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.3354/AEI00415 2021-12-01T23:32:32Z Salmon farming in marine net pens is a major activity in many temperate regions. This industry may affect coastal ecosystems in several ways, such as with waste pollution and parasite spillover. Less is known about the extent to which salmon farming disrupts the use of inshore spawning grounds by wild fish, such as the Atlantic cod Gadus morhua . Acoustic telemetry was therefore used to explore cod space use during the spawning season in a coastal region in mid-Norway with multiple salmon farms. Acoustic receivers were placed in clusters at 5 known cod spawning grounds and 6 nearby salmon farms. Data from 481 adult cod caught at the spawning grounds during 2017-2019 and equipped with acoustic telemetry transmitters were analysed. Overall, fewer fish were detected at farms than spawning grounds, even when accounting for distance from release point. Individual cod residency (days detected / duration of spawning period) was generally higher at the spawning grounds close to farms but low at the farms themselves, with little apparent spawning at the farm localities. In contrast, spawning was clearly occurring at the nearby spawning grounds, with cod spending weeks (n = 316) or months (n = 158) there during the spawning period. Males had longer residence times at spawning grounds than females, likely linked to the cod mating system. Overall, we found little support for the assertion that salmon farms disrupt inshore spawning dynamics of cod using nearby spawning grounds presently, either by attracting spawners to farms or causing fish to leave these grounds. Article in Journal/Newspaper atlantic cod Gadus morhua Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway Aquaculture Environment Interactions 13 399 412 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Salmon farming in marine net pens is a major activity in many temperate regions. This industry may affect coastal ecosystems in several ways, such as with waste pollution and parasite spillover. Less is known about the extent to which salmon farming disrupts the use of inshore spawning grounds by wild fish, such as the Atlantic cod Gadus morhua . Acoustic telemetry was therefore used to explore cod space use during the spawning season in a coastal region in mid-Norway with multiple salmon farms. Acoustic receivers were placed in clusters at 5 known cod spawning grounds and 6 nearby salmon farms. Data from 481 adult cod caught at the spawning grounds during 2017-2019 and equipped with acoustic telemetry transmitters were analysed. Overall, fewer fish were detected at farms than spawning grounds, even when accounting for distance from release point. Individual cod residency (days detected / duration of spawning period) was generally higher at the spawning grounds close to farms but low at the farms themselves, with little apparent spawning at the farm localities. In contrast, spawning was clearly occurring at the nearby spawning grounds, with cod spending weeks (n = 316) or months (n = 158) there during the spawning period. Males had longer residence times at spawning grounds than females, likely linked to the cod mating system. Overall, we found little support for the assertion that salmon farms disrupt inshore spawning dynamics of cod using nearby spawning grounds presently, either by attracting spawners to farms or causing fish to leave these grounds. |
format |
Article in Journal/Newspaper |
author |
Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr 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 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 Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
author_facet |
Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr 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 |
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
title_short |
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
title_full |
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
title_fullStr |
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
title_full_unstemmed |
Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics |
title_sort |
impact of salmon farming on atlantic cod spatio-temporal reproductive dynamics |
publisher |
Inter-Research (IR) |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/89334 http://urn.nb.no/URN:NBN:no-91944 https://doi.org/10.3354/AEI00415 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
1869-215X |
op_relation |
HAVFORSK/14837-01 FHF/901230 http://urn.nb.no/URN:NBN:no-91944 Skjæraasen, Jon Egil Karlsen, Ørjan Langangen, Øystein Ole Gahr 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 . Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics. Aquaculture Environment Interactions. 2021, 13, 399-412 http://hdl.handle.net/10852/89334 1951798 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=13&rft.spage=399&rft.date=2021 Aquaculture Environment Interactions 13 399 412 https://doi.org/10.3354/AEI00415 URN:NBN:no-91944 Fulltext https://www.duo.uio.no/bitstream/handle/10852/89334/2/q013p399.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/AEI00415 |
container_title |
Aquaculture Environment Interactions |
container_volume |
13 |
container_start_page |
399 |
op_container_end_page |
412 |
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1766357760924975104 |