Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups
While it is known that the oceans around the Faroe Islands support an Atlantic salmon (Salmo salar) feeding ground, the relative use of this resource by different age classes and populations remains largely unexplored. Using genetic stock identification and run-reconstruction modelling, we observed...
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Oxford University Press
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/351751 2024-01-07T09:42:14+01:00 Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups O'Sullivan, Ronan James Ozerov, Mikhail Bolstad, Geir H. Gilbey, John Jacobsen, Jan Arge Erkinaro, Jaakko Rikardsen, Audun H. Hindar, Kjetil Aykanat, Tutku Organismal and Evolutionary Biology Research Programme Evolution, Conservation, and Genomics 2022-12-13T23:16:00Z 11 application/pdf http://hdl.handle.net/10138/351751 eng eng Oxford University Press 10.1093/icesjms/fsac182 This work was funded by Academy of Finland grants to TA [project numbers: 1328860 and 1325964]. RJOS was supported by an Ella and Georg Ehrnrooth Postdoctoral Researcher Grant. Salary to GHB and KH was funded by the Norwegian Research Council [projects 275862 and 280308]. O'Sullivan , R J , Ozerov , M , Bolstad , G H , Gilbey , J , Jacobsen , J A , Erkinaro , J , Rikardsen , A H , Hindar , K & Aykanat , T 2022 , ' Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups ' , ICES Journal of Marine Science , vol. 79 , no. 9 , pp. 2442-2452 . https://doi.org/10.1093/icesjms/fsac182 ORCID: /0000-0003-3650-2048/work/124844617 284f1686-5c79-4079-8094-a57316d5d9e8 http://hdl.handle.net/10138/351751 000869354600001 cc_by openAccess info:eu-repo/semantics/openAccess age class structure Faroe Islands migration phenotypic diversity Salmo salar spatial variation in resource use ESCAPED FARMED ATLANTIC SALAR L NORTH-ATLANTIC FISHERY VARIABILITY EVOLUTION WILD CONSERVATION RECOVERIES 1181 Ecology evolutionary biology Article publishedVersion 2022 ftunivhelsihelda 2023-12-14T00:15:43Z While it is known that the oceans around the Faroe Islands support an Atlantic salmon (Salmo salar) feeding ground, the relative use of this resource by different age classes and populations remains largely unexplored. Using genetic stock identification and run-reconstruction modelling, we observed a consistent pattern whereby the proportion of multi-sea winter salmon (MSW-fish that have spent multiple winters at sea) for a reporting group was substantially greater around the Faroes than the MSW proportion among that group's corresponding pre-fisheries abundance. Surprisingly, MSW fish from Ireland and the United Kingdom were as likely to occur around the Faroes as were MSW fish from more north-eastern regions. While 1SW salmon (single sea-winter fish) from Ireland and the United Kingdom as well as Southern Norway occurred in similar proportions around the Faroes, 1SW fish from the north-eastern regions were virtually absent. Our results indicate that the oceans around the Faroes host a predominantly MSW feeding ground and use of this resource varies across age classes and reporting groups. Furthermore, these results suggest that MSW fish from some reporting groups preferentially migrate to the Faroes. Variation in spatial resource use may help buffer salmon populations against localized negative changes in marine conditions via portfolio effects. Peer reviewed Article in Journal/Newspaper Atlantic salmon Faroe Islands Faroes North Atlantic Salmo salar HELDA – University of Helsinki Open Repository Faroe Islands Norway ICES Journal of Marine Science 79 9 2442 2452 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
age class structure Faroe Islands migration phenotypic diversity Salmo salar spatial variation in resource use ESCAPED FARMED ATLANTIC SALAR L NORTH-ATLANTIC FISHERY VARIABILITY EVOLUTION WILD CONSERVATION RECOVERIES 1181 Ecology evolutionary biology |
spellingShingle |
age class structure Faroe Islands migration phenotypic diversity Salmo salar spatial variation in resource use ESCAPED FARMED ATLANTIC SALAR L NORTH-ATLANTIC FISHERY VARIABILITY EVOLUTION WILD CONSERVATION RECOVERIES 1181 Ecology evolutionary biology O'Sullivan, Ronan James Ozerov, Mikhail Bolstad, Geir H. Gilbey, John Jacobsen, Jan Arge Erkinaro, Jaakko Rikardsen, Audun H. Hindar, Kjetil Aykanat, Tutku Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
topic_facet |
age class structure Faroe Islands migration phenotypic diversity Salmo salar spatial variation in resource use ESCAPED FARMED ATLANTIC SALAR L NORTH-ATLANTIC FISHERY VARIABILITY EVOLUTION WILD CONSERVATION RECOVERIES 1181 Ecology evolutionary biology |
description |
While it is known that the oceans around the Faroe Islands support an Atlantic salmon (Salmo salar) feeding ground, the relative use of this resource by different age classes and populations remains largely unexplored. Using genetic stock identification and run-reconstruction modelling, we observed a consistent pattern whereby the proportion of multi-sea winter salmon (MSW-fish that have spent multiple winters at sea) for a reporting group was substantially greater around the Faroes than the MSW proportion among that group's corresponding pre-fisheries abundance. Surprisingly, MSW fish from Ireland and the United Kingdom were as likely to occur around the Faroes as were MSW fish from more north-eastern regions. While 1SW salmon (single sea-winter fish) from Ireland and the United Kingdom as well as Southern Norway occurred in similar proportions around the Faroes, 1SW fish from the north-eastern regions were virtually absent. Our results indicate that the oceans around the Faroes host a predominantly MSW feeding ground and use of this resource varies across age classes and reporting groups. Furthermore, these results suggest that MSW fish from some reporting groups preferentially migrate to the Faroes. Variation in spatial resource use may help buffer salmon populations against localized negative changes in marine conditions via portfolio effects. Peer reviewed |
author2 |
Organismal and Evolutionary Biology Research Programme Evolution, Conservation, and Genomics |
format |
Article in Journal/Newspaper |
author |
O'Sullivan, Ronan James Ozerov, Mikhail Bolstad, Geir H. Gilbey, John Jacobsen, Jan Arge Erkinaro, Jaakko Rikardsen, Audun H. Hindar, Kjetil Aykanat, Tutku |
author_facet |
O'Sullivan, Ronan James Ozerov, Mikhail Bolstad, Geir H. Gilbey, John Jacobsen, Jan Arge Erkinaro, Jaakko Rikardsen, Audun H. Hindar, Kjetil Aykanat, Tutku |
author_sort |
O'Sullivan, Ronan James |
title |
Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
title_short |
Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
title_full |
Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
title_fullStr |
Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
title_full_unstemmed |
Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups |
title_sort |
genetic stock identification reveals greater use of an oceanic feeding ground around the faroe islands by multi-sea winter atlantic salmon, with variation in use across reporting groups |
publisher |
Oxford University Press |
publishDate |
2022 |
url |
http://hdl.handle.net/10138/351751 |
geographic |
Faroe Islands Norway |
geographic_facet |
Faroe Islands Norway |
genre |
Atlantic salmon Faroe Islands Faroes North Atlantic Salmo salar |
genre_facet |
Atlantic salmon Faroe Islands Faroes North Atlantic Salmo salar |
op_relation |
10.1093/icesjms/fsac182 This work was funded by Academy of Finland grants to TA [project numbers: 1328860 and 1325964]. RJOS was supported by an Ella and Georg Ehrnrooth Postdoctoral Researcher Grant. Salary to GHB and KH was funded by the Norwegian Research Council [projects 275862 and 280308]. O'Sullivan , R J , Ozerov , M , Bolstad , G H , Gilbey , J , Jacobsen , J A , Erkinaro , J , Rikardsen , A H , Hindar , K & Aykanat , T 2022 , ' Genetic stock identification reveals greater use of an oceanic feeding ground around the Faroe Islands by multi-sea winter Atlantic salmon, with variation in use across reporting groups ' , ICES Journal of Marine Science , vol. 79 , no. 9 , pp. 2442-2452 . https://doi.org/10.1093/icesjms/fsac182 ORCID: /0000-0003-3650-2048/work/124844617 284f1686-5c79-4079-8094-a57316d5d9e8 http://hdl.handle.net/10138/351751 000869354600001 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
ICES Journal of Marine Science |
container_volume |
79 |
container_issue |
9 |
container_start_page |
2442 |
op_container_end_page |
2452 |
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1787423169359904768 |