A comparative study of the alternative life history of iteroparous salmonids
Abstract The kelt phase of anadromous iteroparous salmonid life history remains mysterious, particularly aspects of their habitat use and factors influencing survival. Atlantic salmon and sea‐run brown trout were captured in the estuary during their return migration to the Vosso River, Norway, tagge...
Published in: | Ecology of Freshwater Fish |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1111/eff.12786 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12786 |
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crwiley:10.1111/eff.12786 2024-06-02T08:03:32+00:00 A comparative study of the alternative life history of iteroparous salmonids Lennox, Robert J. Nilsen, Cecilie I. Dahlmo, Lotte S. Berhe, Saron Barlaup, Bjorn T. Normann, Erik Straume Landro, Yngve Birnie‐Gauvin, Kim Cooke, Steven J. Vollset, Knut Wiik Norges Forskningsråd Miljødirektoratet 2024 http://dx.doi.org/10.1111/eff.12786 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12786 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology of Freshwater Fish ISSN 0906-6691 1600-0633 journal-article 2024 crwiley https://doi.org/10.1111/eff.12786 2024-05-06T07:00:38Z Abstract The kelt phase of anadromous iteroparous salmonid life history remains mysterious, particularly aspects of their habitat use and factors influencing survival. Atlantic salmon and sea‐run brown trout were captured in the estuary during their return migration to the Vosso River, Norway, tagged with acoustic transmitters, and tracked in the watershed and estuary in three different years (2020–2023). We found a relatively narrow window of river exit timing among trout that survived overwinter, whereas salmon tended to leave during a more protracted period. Trout preferred overwintering in lakes within the river system, which provided for lower locomotor activity than fish that overwintered in pools in the river according to data from tri‐axial accelerometer transmitters. In contrast, Atlantic salmon tended to spend surprisingly little time in lakes even though the energy expenditure in this habitat is was seemingly lower for salmon that did overwinter in the lake. Our results demonstrate different use of habitat during overwintering and could suggest that measures to protect iteroparous life history strategies of salmonids will differently impact these two iteroparous salmonids. Article in Journal/Newspaper Atlantic salmon Wiley Online Library Norway Ecology of Freshwater Fish |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The kelt phase of anadromous iteroparous salmonid life history remains mysterious, particularly aspects of their habitat use and factors influencing survival. Atlantic salmon and sea‐run brown trout were captured in the estuary during their return migration to the Vosso River, Norway, tagged with acoustic transmitters, and tracked in the watershed and estuary in three different years (2020–2023). We found a relatively narrow window of river exit timing among trout that survived overwinter, whereas salmon tended to leave during a more protracted period. Trout preferred overwintering in lakes within the river system, which provided for lower locomotor activity than fish that overwintered in pools in the river according to data from tri‐axial accelerometer transmitters. In contrast, Atlantic salmon tended to spend surprisingly little time in lakes even though the energy expenditure in this habitat is was seemingly lower for salmon that did overwinter in the lake. Our results demonstrate different use of habitat during overwintering and could suggest that measures to protect iteroparous life history strategies of salmonids will differently impact these two iteroparous salmonids. |
author2 |
Norges Forskningsråd Miljødirektoratet |
format |
Article in Journal/Newspaper |
author |
Lennox, Robert J. Nilsen, Cecilie I. Dahlmo, Lotte S. Berhe, Saron Barlaup, Bjorn T. Normann, Erik Straume Landro, Yngve Birnie‐Gauvin, Kim Cooke, Steven J. Vollset, Knut Wiik |
spellingShingle |
Lennox, Robert J. Nilsen, Cecilie I. Dahlmo, Lotte S. Berhe, Saron Barlaup, Bjorn T. Normann, Erik Straume Landro, Yngve Birnie‐Gauvin, Kim Cooke, Steven J. Vollset, Knut Wiik A comparative study of the alternative life history of iteroparous salmonids |
author_facet |
Lennox, Robert J. Nilsen, Cecilie I. Dahlmo, Lotte S. Berhe, Saron Barlaup, Bjorn T. Normann, Erik Straume Landro, Yngve Birnie‐Gauvin, Kim Cooke, Steven J. Vollset, Knut Wiik |
author_sort |
Lennox, Robert J. |
title |
A comparative study of the alternative life history of iteroparous salmonids |
title_short |
A comparative study of the alternative life history of iteroparous salmonids |
title_full |
A comparative study of the alternative life history of iteroparous salmonids |
title_fullStr |
A comparative study of the alternative life history of iteroparous salmonids |
title_full_unstemmed |
A comparative study of the alternative life history of iteroparous salmonids |
title_sort |
comparative study of the alternative life history of iteroparous salmonids |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1111/eff.12786 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12786 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Ecology of Freshwater Fish ISSN 0906-6691 1600-0633 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eff.12786 |
container_title |
Ecology of Freshwater Fish |
_version_ |
1800748085487337472 |