Ocean predation and mortality of adult Atlantic salmon
Published version, licensed CC BY-NC-ND 4.0. , available at: https://doi.org/10.1038/s41598-019-44041-5 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 investigat...
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Online Access: | https://hdl.handle.net/10037/16501 https://doi.org/10.1038/s41598-019-44041-5 |
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ftunivtroemsoe:oai:munin.uit.no:10037/16501 2023-05-15T15:30:51+02:00 Ocean predation and mortality of adult Atlantic salmon Strøm, John Fredrik Rikardsen, Audun H. Campana, Steven E. Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J.W. Gargan, Patrick G. Caballero Javierre, Pablo Thorstad, Eva Bonsak 2019-05-27 https://hdl.handle.net/10037/16501 https://doi.org/10.1038/s41598-019-44041-5 eng eng Nature Research Scientific Reports Andre: Alta Laksefiskeri Interessentskap Norges forskningsråd: 280308 Andre: Atlantic Salmon Conservation Foundation Andre: Danish Rod and Net License Fund Andre: Xunta de Galicia Andre: Tromsø Research Foundation http://hdl.handle.net/11250/2599421 Strøm, J.F., Rikardsen, A.H., Campana, S.E., Righton, D., Carr, J., Aarestrup, K. . Thorstad, E.B.(2019) Ocean predation and mortality of adult Atlantic salmon. Scientific Reports, 9 , (1), 1-11. https://doi.org/10.1038/s41598-019-44041-5 FRIDAID 1701283 doi:10.1038/s41598-019-44041-5 2045-2322 https://hdl.handle.net/10037/16501 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Journal article Peer reviewed 2019 ftunivtroemsoe https://doi.org/10.1038/s41598-019-44041-5 2021-06-25T17:56:45Z Published version, licensed CC BY-NC-ND 4.0. , available at: https://doi.org/10.1038/s41598-019-44041-5 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 (ZP) and total mortality rates (ZM) where higher for Atlantic salmon from Canada, Ireland, and Spain (ZP = 0.60– 1.32 y−1, ZM = 1.73–3.08 y−1) than from Denmark and Norway (ZP = 0–0.13 y−1, ZM = 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 University of Tromsø: Munin Open Research Archive Canada Norway Scientific Reports 9 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Strøm, John Fredrik Rikardsen, Audun H. Campana, Steven E. Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J.W. Gargan, Patrick G. Caballero Javierre, Pablo Thorstad, Eva Bonsak Ocean predation and mortality of adult Atlantic salmon |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
description |
Published version, licensed CC BY-NC-ND 4.0. , available at: https://doi.org/10.1038/s41598-019-44041-5 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 (ZP) and total mortality rates (ZM) where higher for Atlantic salmon from Canada, Ireland, and Spain (ZP = 0.60– 1.32 y−1, ZM = 1.73–3.08 y−1) than from Denmark and Norway (ZP = 0–0.13 y−1, ZM = 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 H. Campana, Steven E. Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J.W. Gargan, Patrick G. Caballero Javierre, Pablo Thorstad, Eva Bonsak |
author_facet |
Strøm, John Fredrik Rikardsen, Audun H. Campana, Steven E. Righton, David Carr, Jonathan Aarestrup, Kim Stokesbury, Michael J.W. Gargan, Patrick G. Caballero Javierre, Pablo 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 |
publisher |
Nature Research |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/16501 https://doi.org/10.1038/s41598-019-44041-5 |
geographic |
Canada Norway |
geographic_facet |
Canada Norway |
genre |
Atlantic salmon North Atlantic Salmo salar toothed whales |
genre_facet |
Atlantic salmon North Atlantic Salmo salar toothed whales |
op_relation |
Scientific Reports Andre: Alta Laksefiskeri Interessentskap Norges forskningsråd: 280308 Andre: Atlantic Salmon Conservation Foundation Andre: Danish Rod and Net License Fund Andre: Xunta de Galicia Andre: Tromsø Research Foundation http://hdl.handle.net/11250/2599421 Strøm, J.F., Rikardsen, A.H., Campana, S.E., Righton, D., Carr, J., Aarestrup, K. . Thorstad, E.B.(2019) Ocean predation and mortality of adult Atlantic salmon. Scientific Reports, 9 , (1), 1-11. https://doi.org/10.1038/s41598-019-44041-5 FRIDAID 1701283 doi:10.1038/s41598-019-44041-5 2045-2322 https://hdl.handle.net/10037/16501 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/s41598-019-44041-5 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766361319251902464 |