Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer
Data from a 25-year study of anadromous Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta) in the River Halselva provided evidence that survival during winter was linked to marine growth during the previous summer. The study supported the “critical size and critical period” hypothesis,...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0077 |
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crcansciencepubl:10.1139/cjfas-2017-0077 2023-12-17T10:25:15+01:00 Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer Jensen, Arne Johan Finstad, Bengt Fiske, Peder 2018 http://dx.doi.org/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0077 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 75, issue 5, page 663-672 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2018 crcansciencepubl https://doi.org/10.1139/cjfas-2017-0077 2023-11-19T13:38:07Z Data from a 25-year study of anadromous Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta) in the River Halselva provided evidence that survival during winter was linked to marine growth during the previous summer. The study supported the “critical size and critical period” hypothesis, which postulates that regulation of the abundance of adult salmonids occurs in two major phases. The first phase is marine mortality that occurs shortly after smolts enter salt water, and the second is during the following winter, when individuals that have not attained a critical size are unable to meet minimum metabolic requirements and die. In the present study, growth during summer appeared to be more important to winter survival than body size. Size-selective mortality occurred both at sea during summer and in fresh water during winter and was more evident for first-time migrants than repeat migrants. Article in Journal/Newspaper Arctic Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 75 5 663 672 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Jensen, Arne Johan Finstad, Bengt Fiske, Peder Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Data from a 25-year study of anadromous Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta) in the River Halselva provided evidence that survival during winter was linked to marine growth during the previous summer. The study supported the “critical size and critical period” hypothesis, which postulates that regulation of the abundance of adult salmonids occurs in two major phases. The first phase is marine mortality that occurs shortly after smolts enter salt water, and the second is during the following winter, when individuals that have not attained a critical size are unable to meet minimum metabolic requirements and die. In the present study, growth during summer appeared to be more important to winter survival than body size. Size-selective mortality occurred both at sea during summer and in fresh water during winter and was more evident for first-time migrants than repeat migrants. |
format |
Article in Journal/Newspaper |
author |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder |
author_facet |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder |
author_sort |
Jensen, Arne Johan |
title |
Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
title_short |
Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
title_full |
Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
title_fullStr |
Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
title_full_unstemmed |
Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer |
title_sort |
evidence for the linkage of survival of anadromous arctic char and brown trout during winter to marine growth during the previous summer |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2017-0077 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2017-0077 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Salvelinus alpinus |
genre_facet |
Arctic Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 75, issue 5, page 663-672 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2017-0077 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
75 |
container_issue |
5 |
container_start_page |
663 |
op_container_end_page |
672 |
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1785574761725689856 |