Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences
Consistent individual differences in behavior have been demonstrated for many animals, but there are few studies of consequences of such repeated behavior in the wild. We tested consistency in migration timing to and from the sea among anadromous Arctic char (Salvelinus alpinus) and brown trout (Sal...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2680130 2023-05-15T14:56:43+02:00 Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences Jensen, Arne Johan Finstad, Bengt Fiske, Peder Diserud, Ola Håvard Thorstad, Eva Bonsak 2020 application/pdf https://hdl.handle.net/11250/2680130 https://doi.org/10.1002/ece3.6808 eng eng Wiley Egen institusjon: Norwegian institute for nature research (NINA) Andre: Stakraft Energi AS Andre: Norwegian Environment Agency urn:issn:2045-7758 https://hdl.handle.net/11250/2680130 https://doi.org/10.1002/ece3.6808 cristin:1832986 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY Ecology and Evolution VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2020 ftntnutrondheimi https://doi.org/10.1002/ece3.6808 2020-09-30T22:33:44Z Consistent individual differences in behavior have been demonstrated for many animals, but there are few studies of consequences of such repeated behavior in the wild. We tested consistency in migration timing to and from the sea among anadromous Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta), using data from a study period of about 25 years, including more than 27,000 uniquely Carlin‐tagged individuals that migrated to sea for feeding in the spring and returned to the river in late summer for up to 13 successive years. Consistency was found between individuals across time in timing of the seaward migration. Individuals migrating early during their first migration tended to migrate early the following years, and late migrants tended to migrate late. The same pattern was found also at ascent to freshwater. Hence, this study demonstrated that individual fish in nature can differ in behavior related to migration timing and that these differences can be consistent during their lifetime. Early migrants increased their mass more than late migrants and had a higher specific growth rate. Early migrating Arctic char, but not brown trout, experienced a longer life after the first migration to sea than late migrants. In both species, maturity occurred earlier in individuals that migrated early. For brown trout, but not for Arctic char, fecundity was significantly correlated to the timing of smolt migration. Hence, the repeatable individual variation in migration timing seemed to have ecological and fitness consequences in terms of growth, longevity, timing of maturity, and lifetime fecundity. publishedVersion This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd Article in Journal/Newspaper Arctic Salvelinus alpinus NTNU Open Archive (Norwegian University of Science and Technology) Arctic Ecology and Evolution 10 20 11727 11738 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Jensen, Arne Johan Finstad, Bengt Fiske, Peder Diserud, Ola Håvard Thorstad, Eva Bonsak Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Consistent individual differences in behavior have been demonstrated for many animals, but there are few studies of consequences of such repeated behavior in the wild. We tested consistency in migration timing to and from the sea among anadromous Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta), using data from a study period of about 25 years, including more than 27,000 uniquely Carlin‐tagged individuals that migrated to sea for feeding in the spring and returned to the river in late summer for up to 13 successive years. Consistency was found between individuals across time in timing of the seaward migration. Individuals migrating early during their first migration tended to migrate early the following years, and late migrants tended to migrate late. The same pattern was found also at ascent to freshwater. Hence, this study demonstrated that individual fish in nature can differ in behavior related to migration timing and that these differences can be consistent during their lifetime. Early migrants increased their mass more than late migrants and had a higher specific growth rate. Early migrating Arctic char, but not brown trout, experienced a longer life after the first migration to sea than late migrants. In both species, maturity occurred earlier in individuals that migrated early. For brown trout, but not for Arctic char, fecundity was significantly correlated to the timing of smolt migration. Hence, the repeatable individual variation in migration timing seemed to have ecological and fitness consequences in terms of growth, longevity, timing of maturity, and lifetime fecundity. publishedVersion This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd |
format |
Article in Journal/Newspaper |
author |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder Diserud, Ola Håvard Thorstad, Eva Bonsak |
author_facet |
Jensen, Arne Johan Finstad, Bengt Fiske, Peder Diserud, Ola Håvard Thorstad, Eva Bonsak |
author_sort |
Jensen, Arne Johan |
title |
Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
title_short |
Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
title_full |
Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
title_fullStr |
Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
title_full_unstemmed |
Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
title_sort |
repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2680130 https://doi.org/10.1002/ece3.6808 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Salvelinus alpinus |
genre_facet |
Arctic Salvelinus alpinus |
op_source |
Ecology and Evolution |
op_relation |
Egen institusjon: Norwegian institute for nature research (NINA) Andre: Stakraft Energi AS Andre: Norwegian Environment Agency urn:issn:2045-7758 https://hdl.handle.net/11250/2680130 https://doi.org/10.1002/ece3.6808 cristin:1832986 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.6808 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
20 |
container_start_page |
11727 |
op_container_end_page |
11738 |
_version_ |
1766328795301675008 |