Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths
Long-term declines in abundance of wild Atlantic salmon Salmo salar , L. have been linked to reductions in marine survivorship, and recent reductions in growth condition (a measure of fish quality) have been correlated to increased mid-winter sea-surface temperature anomalies in the eastern North At...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/reconstructing-marine-lifehistory-strategies-of-wild-atlantic-salmon-from-the-stable-isotope-composition-of-otoliths(d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c).html https://doi.org/10.3354/meps10066 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c 2024-09-15T17:55:58+00:00 Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths Hanson, Nora Nell Wurster, Christopher Martin EIMF, x Todd, Christopher David 2014-02 https://research-portal.st-andrews.ac.uk/en/researchoutput/reconstructing-marine-lifehistory-strategies-of-wild-atlantic-salmon-from-the-stable-isotope-composition-of-otoliths(d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c).html https://doi.org/10.3354/meps10066 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/reconstructing-marine-lifehistory-strategies-of-wild-atlantic-salmon-from-the-stable-isotope-composition-of-otoliths(d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c).html info:eu-repo/semantics/closedAccess Hanson , N N , Wurster , C M , EIMF , X & Todd , C D 2014 , ' Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths ' , Marine Ecology Progress Series , vol. 475 , pp. 249-266 . https://doi.org/10.3354/meps10066 Atlantic salmon Migration Isoscape Tracking Condition factor Metabolism article 2014 ftunstandrewcris https://doi.org/10.3354/meps10066 2024-06-26T23:33:42Z Long-term declines in abundance of wild Atlantic salmon Salmo salar , L. have been linked to reductions in marine survivorship, and recent reductions in growth condition (a measure of fish quality) have been correlated to increased mid-winter sea-surface temperature anomalies in the eastern North Atlantic. Establishing a causal link between marine climate and salmon somatic condition is difficult without at-sea measurements of environmental and biological parameters, but electronically tagging these animals to obtain this information is also difficult and costly. The stable isotope composition of oxygen and carbon in the sequential layers of salmon otoliths can provide a basis for retrospective studies of the thermal, metabolic and dietary histories of individual fish. We used high resolution δ 18 O and δ 13 C profiles obtained using secondary ion mass spectrometry to compare the marine thermal and metabolic behaviour of 1 sea-winter return-migrant adult salmon. Seasonal and ontogenetic patterns in δ 18 O and δ 13 C values dominated isotope variation, although there were marked differences between individual profiles,indicating the potential for large differences in individual migration routes. There was no significant relationship between isotope variation and adult condition. Constructed thermal profiles provided plausible data, but the present uncertainty in otolith thermometry parameters for an open ocean fish such as Atlantic salmon preclude firm conclusions based on these estimates. Marine life-history variation in otolith δ 13 C is likely driven by ontogenetic changes, both in diet and metabolism with size. A marked and rapid decrease in the δ 13 C values of some fish in the last month(s) of the marine migration could be an indicator of physiological changes occurring during the homing migration. Article in Journal/Newspaper Atlantic salmon North Atlantic Salmo salar University of St Andrews: Research Portal Marine Ecology Progress Series 475 249 266 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Atlantic salmon Migration Isoscape Tracking Condition factor Metabolism |
spellingShingle |
Atlantic salmon Migration Isoscape Tracking Condition factor Metabolism Hanson, Nora Nell Wurster, Christopher Martin EIMF, x Todd, Christopher David Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
topic_facet |
Atlantic salmon Migration Isoscape Tracking Condition factor Metabolism |
description |
Long-term declines in abundance of wild Atlantic salmon Salmo salar , L. have been linked to reductions in marine survivorship, and recent reductions in growth condition (a measure of fish quality) have been correlated to increased mid-winter sea-surface temperature anomalies in the eastern North Atlantic. Establishing a causal link between marine climate and salmon somatic condition is difficult without at-sea measurements of environmental and biological parameters, but electronically tagging these animals to obtain this information is also difficult and costly. The stable isotope composition of oxygen and carbon in the sequential layers of salmon otoliths can provide a basis for retrospective studies of the thermal, metabolic and dietary histories of individual fish. We used high resolution δ 18 O and δ 13 C profiles obtained using secondary ion mass spectrometry to compare the marine thermal and metabolic behaviour of 1 sea-winter return-migrant adult salmon. Seasonal and ontogenetic patterns in δ 18 O and δ 13 C values dominated isotope variation, although there were marked differences between individual profiles,indicating the potential for large differences in individual migration routes. There was no significant relationship between isotope variation and adult condition. Constructed thermal profiles provided plausible data, but the present uncertainty in otolith thermometry parameters for an open ocean fish such as Atlantic salmon preclude firm conclusions based on these estimates. Marine life-history variation in otolith δ 13 C is likely driven by ontogenetic changes, both in diet and metabolism with size. A marked and rapid decrease in the δ 13 C values of some fish in the last month(s) of the marine migration could be an indicator of physiological changes occurring during the homing migration. |
format |
Article in Journal/Newspaper |
author |
Hanson, Nora Nell Wurster, Christopher Martin EIMF, x Todd, Christopher David |
author_facet |
Hanson, Nora Nell Wurster, Christopher Martin EIMF, x Todd, Christopher David |
author_sort |
Hanson, Nora Nell |
title |
Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
title_short |
Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
title_full |
Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
title_fullStr |
Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
title_full_unstemmed |
Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths |
title_sort |
reconstructing marine life-history strategies of wild atlantic salmon from the stable isotope composition of otoliths |
publishDate |
2014 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/reconstructing-marine-lifehistory-strategies-of-wild-atlantic-salmon-from-the-stable-isotope-composition-of-otoliths(d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c).html https://doi.org/10.3354/meps10066 |
genre |
Atlantic salmon North Atlantic Salmo salar |
genre_facet |
Atlantic salmon North Atlantic Salmo salar |
op_source |
Hanson , N N , Wurster , C M , EIMF , X & Todd , C D 2014 , ' Reconstructing marine life-history strategies of wild Atlantic salmon from the stable isotope composition of otoliths ' , Marine Ecology Progress Series , vol. 475 , pp. 249-266 . https://doi.org/10.3354/meps10066 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/reconstructing-marine-lifehistory-strategies-of-wild-atlantic-salmon-from-the-stable-isotope-composition-of-otoliths(d80a0fad-56a7-45c3-a5d5-c2a5e2e79a5c).html |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.3354/meps10066 |
container_title |
Marine Ecology Progress Series |
container_volume |
475 |
container_start_page |
249 |
op_container_end_page |
266 |
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1810432180147453952 |