Modelling the life‐history variation of Arctic charr
Abstract – A model based on proximate considerations of life histories of Atlantic salmon, Salmo salar , was examined for its applicability to fit the variation in life‐history of wild Arctic charr, Salvelinus alpinus , based on a qualitative assessment of information related to growth and lipid dyn...
Published in: | Ecology of Freshwater Fish |
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Online Access: | http://dx.doi.org/10.1111/j.1600-0633.2004.00070.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2004.00070.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2004.00070.x |
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crwiley:10.1111/j.1600-0633.2004.00070.x 2023-12-03T10:15:26+01:00 Modelling the life‐history variation of Arctic charr Rikardsen, A. H. Thorpe, J. E. Dempson, J. B. 2004 http://dx.doi.org/10.1111/j.1600-0633.2004.00070.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2004.00070.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2004.00070.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 13, issue 4, page 305-311 ISSN 0906-6691 1600-0633 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crwiley https://doi.org/10.1111/j.1600-0633.2004.00070.x 2023-11-09T14:06:51Z Abstract – A model based on proximate considerations of life histories of Atlantic salmon, Salmo salar , was examined for its applicability to fit the variation in life‐history of wild Arctic charr, Salvelinus alpinus , based on a qualitative assessment of information related to growth and lipid dynamics of Arctic charr. The original salmon model is discussed in context of modifications required to account for added complexities in the life history of Arctic charr in relation to anadromy versus residency. A study from North Norway shows that individual charr that emigrate from the lakes to the sea, maintain a high growth rate in the lake in late summer and early autumn compared with resident fish. Their relatively low lipid level in autumn combined with a high rate of change of lipid during winter was associated with postponement of maturation in the anadromous individuals. Individuals that remain resident in the lake arrested growth in autumn. Their high lipid level in autumn combined with a low rate of change of lipid during winter was associated with maturation the following summer, without emigration from freshwater. Results from this and other related studies show similarities with the model derived from lipid and growth dynamics of Atlantic salmon. The adjusted charr model illustrates possible proximate explanations for the high variation in life‐history strategies of Arctic charr. However, the model does not account for the characteristic return migration of immature charr into freshwater several weeks after their entry to the sea. The proximate physiological stimulus for this movement of immature fish is not entirely clear. Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus Wiley Online Library (via Crossref) Arctic Norway Ecology of Freshwater Fish 13 4 305 311 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Rikardsen, A. H. Thorpe, J. E. Dempson, J. B. Modelling the life‐history variation of Arctic charr |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract – A model based on proximate considerations of life histories of Atlantic salmon, Salmo salar , was examined for its applicability to fit the variation in life‐history of wild Arctic charr, Salvelinus alpinus , based on a qualitative assessment of information related to growth and lipid dynamics of Arctic charr. The original salmon model is discussed in context of modifications required to account for added complexities in the life history of Arctic charr in relation to anadromy versus residency. A study from North Norway shows that individual charr that emigrate from the lakes to the sea, maintain a high growth rate in the lake in late summer and early autumn compared with resident fish. Their relatively low lipid level in autumn combined with a high rate of change of lipid during winter was associated with postponement of maturation in the anadromous individuals. Individuals that remain resident in the lake arrested growth in autumn. Their high lipid level in autumn combined with a low rate of change of lipid during winter was associated with maturation the following summer, without emigration from freshwater. Results from this and other related studies show similarities with the model derived from lipid and growth dynamics of Atlantic salmon. The adjusted charr model illustrates possible proximate explanations for the high variation in life‐history strategies of Arctic charr. However, the model does not account for the characteristic return migration of immature charr into freshwater several weeks after their entry to the sea. The proximate physiological stimulus for this movement of immature fish is not entirely clear. |
format |
Article in Journal/Newspaper |
author |
Rikardsen, A. H. Thorpe, J. E. Dempson, J. B. |
author_facet |
Rikardsen, A. H. Thorpe, J. E. Dempson, J. B. |
author_sort |
Rikardsen, A. H. |
title |
Modelling the life‐history variation of Arctic charr |
title_short |
Modelling the life‐history variation of Arctic charr |
title_full |
Modelling the life‐history variation of Arctic charr |
title_fullStr |
Modelling the life‐history variation of Arctic charr |
title_full_unstemmed |
Modelling the life‐history variation of Arctic charr |
title_sort |
modelling the life‐history variation of arctic charr |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2004.00070.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2004.00070.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2004.00070.x |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus |
op_source |
Ecology of Freshwater Fish volume 13, issue 4, page 305-311 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2004.00070.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
13 |
container_issue |
4 |
container_start_page |
305 |
op_container_end_page |
311 |
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1784262339512500224 |