Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change
Atlantic salmon Salmo salar are experiencing widespread population declines, and reductions in growth and survival in the marine environment are contributing factors. Our aims were to estimate marine food consumption of adult salmon and to determine how energetics would be directly afected by the in...
Published in: | Hydrobiologia |
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Online Access: | https://hdl.handle.net/10037/29089 https://doi.org/10.1007/s10750-023-05234-2 |
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ftunivtroemsoe:oai:munin.uit.no:10037/29089 2023-06-11T04:10:15+02:00 Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change Strøm, John Fredrik Ugedal, Ola Rikardsen, Audun H. Thorstad, Eva Bonsak 2023-04-27 https://hdl.handle.net/10037/29089 https://doi.org/10.1007/s10750-023-05234-2 eng eng Springer Hydrobiologia FRIDAID 2144168 doi:10.1007/s10750-023-05234-2 0018-8158 1573-5117 https://hdl.handle.net/10037/29089 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.1007/s10750-023-05234-2 2023-05-03T23:05:53Z Atlantic salmon Salmo salar are experiencing widespread population declines, and reductions in growth and survival in the marine environment are contributing factors. Our aims were to estimate marine food consumption of adult salmon and to determine how energetics would be directly afected by the increased ocean temperatures associated with climate change. We tagged previous spawners on outward migration (body size 76–119 cm) with archival tags and used a bioenergetic model to combine in situ temperature recordings with individual data on body growth. Average energy consumption was estimated to be 331–813 kJ per day, which is equivalent to 5–11 prey fsh with an average body mass of ca. 15 g. Energy content of prey was the most important factor determining food consumption required to maintain growth. Conversely, the increases in ocean temperatures expected with climate change were predicted to have limited physiological efects on energy budgets and limited impact on the food consumption needed to maintain growth. We conclude that climatic warming will impact Atlantic salmon primarily through changes in prey availability and ecosystem structure rather than the direct efects of temperature on physiological performance. Article in Journal/Newspaper Atlantic salmon Salmo salar University of Tromsø: Munin Open Research Archive Hydrobiologia |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Strøm, John Fredrik Ugedal, Ola Rikardsen, Audun H. Thorstad, Eva Bonsak Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
description |
Atlantic salmon Salmo salar are experiencing widespread population declines, and reductions in growth and survival in the marine environment are contributing factors. Our aims were to estimate marine food consumption of adult salmon and to determine how energetics would be directly afected by the increased ocean temperatures associated with climate change. We tagged previous spawners on outward migration (body size 76–119 cm) with archival tags and used a bioenergetic model to combine in situ temperature recordings with individual data on body growth. Average energy consumption was estimated to be 331–813 kJ per day, which is equivalent to 5–11 prey fsh with an average body mass of ca. 15 g. Energy content of prey was the most important factor determining food consumption required to maintain growth. Conversely, the increases in ocean temperatures expected with climate change were predicted to have limited physiological efects on energy budgets and limited impact on the food consumption needed to maintain growth. We conclude that climatic warming will impact Atlantic salmon primarily through changes in prey availability and ecosystem structure rather than the direct efects of temperature on physiological performance. |
format |
Article in Journal/Newspaper |
author |
Strøm, John Fredrik Ugedal, Ola Rikardsen, Audun H. Thorstad, Eva Bonsak |
author_facet |
Strøm, John Fredrik Ugedal, Ola Rikardsen, Audun H. Thorstad, Eva Bonsak |
author_sort |
Strøm, John Fredrik |
title |
Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
title_short |
Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
title_full |
Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
title_fullStr |
Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
title_full_unstemmed |
Marine food consumption by adult Atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
title_sort |
marine food consumption by adult atlantic salmon and energetic impacts of increased ocean temperatures caused by climate change |
publisher |
Springer |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/29089 https://doi.org/10.1007/s10750-023-05234-2 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Hydrobiologia FRIDAID 2144168 doi:10.1007/s10750-023-05234-2 0018-8158 1573-5117 https://hdl.handle.net/10037/29089 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1007/s10750-023-05234-2 |
container_title |
Hydrobiologia |
_version_ |
1768384548211523584 |