Ocean predation and mortality of adult Atlantic salmon
Published version, 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 mo...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
NatureResearch
2019
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/15762 https://doi.org/10.1038/s41598-019-44041-5 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/15762 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/15762 2023-05-15T15:30:46+02:00 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 2019-05-27 https://hdl.handle.net/10037/15762 https://doi.org/10.1038/s41598-019-44041-5 eng eng NatureResearch Scientific Reports 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, 9, (7890), 11 s. https://doi.org/10.1038/s41598-019-44041-5 FRIDAID 1700409 https://doi.org/10.1038/s41598-019-44041-5 2045-2322 https://hdl.handle.net/10037/15762 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 2021-06-25T17:56:35Z Published version, 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 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 |
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, 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 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 |
publisher |
NatureResearch |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/15762 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 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, 9, (7890), 11 s. https://doi.org/10.1038/s41598-019-44041-5 FRIDAID 1700409 https://doi.org/10.1038/s41598-019-44041-5 2045-2322 https://hdl.handle.net/10037/15762 |
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_ |
1766361220466606080 |