Ocean predation and mortality of adult Atlantic salmon
Predation and mortality are often difficult to estimate in the ocean, which hampers the management and conservation of marine fishes. We used data from pop-up satellite archival tags to investigate the ocean predation and mortality of adult Atlantic salmon (Salmo salar) released from 12 rivers flowi...
Published in: | Scientific Reports |
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2019
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Online Access: | https://orbit.dtu.dk/en/publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 https://doi.org/10.1038/s41598-019-44041-5 https://backend.orbit.dtu.dk/ws/files/181257901/s41598_019_44041_5.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 2024-09-15T17:56:01+00:00 Ocean predation and mortality of adult Atlantic salmon Strøm, John Fredrik Rikardsen, Audun Håvard Campana, Steven E Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J W Gargan, Patrick Javierre, Pablo Caballero Thorstad, Eva Bonsak 2019 application/pdf https://orbit.dtu.dk/en/publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 https://doi.org/10.1038/s41598-019-44041-5 https://backend.orbit.dtu.dk/ws/files/181257901/s41598_019_44041_5.pdf eng eng https://orbit.dtu.dk/en/publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 info:eu-repo/semantics/openAccess Strøm , J F , Rikardsen , A H , Campana , S E , Righton , D , Carr , J , Aarestrup , K , Stokesbury , M J W , Gargan , P , Javierre , P C & Thorstad , E B 2019 , ' Ocean predation and mortality of adult Atlantic salmon ' , Scientific Reports , vol. 9 , 7890 . https://doi.org/10.1038/s41598-019-44041-5 Ecology Ichthyology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2019 ftdtupubl https://doi.org/10.1038/s41598-019-44041-5 2024-08-05T23:48:29Z Predation and mortality are often difficult to estimate in the ocean, which hampers the management and conservation of marine fishes. We used data from pop-up satellite archival tags to investigate the ocean predation and mortality of adult Atlantic salmon (Salmo salar) released from 12 rivers flowing into the North Atlantic Ocean. Data from 156 tagged fish revealed 22 definite predation events (14%) and 38 undetermined mortalities (24%). Endothermic fish were the most common predators (n = 13), with most of these predation events occurring in the Gulf of St. Lawrence and from the Bay of Biscay to the Irish Shelf. Predation by marine mammals, most likely large deep-diving toothed whales (n = 5), and large ectothermic fish (n = 4) were less frequent. Both the estimated predation rates (Z P ) and total mortality rates (Z M ) where higher for Atlantic salmon from Canada, Ireland, and Spain (Z P = 0.60 -1 .32 y -1 , Z M = 1.73-3.08 y -1 ) than from Denmark and Norway (Z P = 0-0.13 y -1 , Z M = 0.19 -1 .03 y -1 ). This geographical variation in ocean mortality correlates with ongoing population declines, which are more profound for southern populations, indicating that low ocean survival of adults may act as an additional stressor to already vulnerable populations. Article in Journal/Newspaper Atlantic salmon North Atlantic Salmo salar toothed whales Technical University of Denmark: DTU Orbit Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Ecology Ichthyology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Ecology Ichthyology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Strøm, John Fredrik Rikardsen, Audun Håvard Campana, Steven E Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J W Gargan, Patrick Javierre, Pablo Caballero Thorstad, Eva Bonsak Ocean predation and mortality of adult Atlantic salmon |
topic_facet |
Ecology Ichthyology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Predation and mortality are often difficult to estimate in the ocean, which hampers the management and conservation of marine fishes. We used data from pop-up satellite archival tags to investigate the ocean predation and mortality of adult Atlantic salmon (Salmo salar) released from 12 rivers flowing into the North Atlantic Ocean. Data from 156 tagged fish revealed 22 definite predation events (14%) and 38 undetermined mortalities (24%). Endothermic fish were the most common predators (n = 13), with most of these predation events occurring in the Gulf of St. Lawrence and from the Bay of Biscay to the Irish Shelf. Predation by marine mammals, most likely large deep-diving toothed whales (n = 5), and large ectothermic fish (n = 4) were less frequent. Both the estimated predation rates (Z P ) and total mortality rates (Z M ) where higher for Atlantic salmon from Canada, Ireland, and Spain (Z P = 0.60 -1 .32 y -1 , Z M = 1.73-3.08 y -1 ) than from Denmark and Norway (Z P = 0-0.13 y -1 , Z M = 0.19 -1 .03 y -1 ). This geographical variation in ocean mortality correlates with ongoing population declines, which are more profound for southern populations, indicating that low ocean survival of adults may act as an additional stressor to already vulnerable populations. |
format |
Article in Journal/Newspaper |
author |
Strøm, John Fredrik Rikardsen, Audun Håvard Campana, Steven E Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J W Gargan, Patrick Javierre, Pablo Caballero Thorstad, Eva Bonsak |
author_facet |
Strøm, John Fredrik Rikardsen, Audun Håvard Campana, Steven E Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J W Gargan, Patrick Javierre, Pablo Caballero Thorstad, Eva Bonsak |
author_sort |
Strøm, John Fredrik |
title |
Ocean predation and mortality of adult Atlantic salmon |
title_short |
Ocean predation and mortality of adult Atlantic salmon |
title_full |
Ocean predation and mortality of adult Atlantic salmon |
title_fullStr |
Ocean predation and mortality of adult Atlantic salmon |
title_full_unstemmed |
Ocean predation and mortality of adult Atlantic salmon |
title_sort |
ocean predation and mortality of adult atlantic salmon |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 https://doi.org/10.1038/s41598-019-44041-5 https://backend.orbit.dtu.dk/ws/files/181257901/s41598_019_44041_5.pdf |
genre |
Atlantic salmon North Atlantic Salmo salar toothed whales |
genre_facet |
Atlantic salmon North Atlantic Salmo salar toothed whales |
op_source |
Strøm , J F , Rikardsen , A H , Campana , S E , Righton , D , Carr , J , Aarestrup , K , Stokesbury , M J W , Gargan , P , Javierre , P C & Thorstad , E B 2019 , ' Ocean predation and mortality of adult Atlantic salmon ' , Scientific Reports , vol. 9 , 7890 . https://doi.org/10.1038/s41598-019-44041-5 |
op_relation |
https://orbit.dtu.dk/en/publications/60ddb13d-4601-48a4-9e1d-e90f64363e26 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-019-44041-5 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1810432238254292992 |