Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus )
Most salmonids, as well as many other freshwater fish species in the Northern Hemisphere, have been reported to show some form of daytime sheltering behaviour over the winter. Previous work has shown that temperatures around 6-8°C trigger the onset of this sheltering behaviour. However, fish from co...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2000
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Online Access: | http://dx.doi.org/10.1139/f99-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/f99-253 |
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crcansciencepubl:10.1139/f99-253 2023-12-17T10:25:26+01:00 Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) Valdimarsson, Sveinn K Metcalfe, Neil B Skúlason, Skúli 2000 http://dx.doi.org/10.1139/f99-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/f99-253 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 4, page 719-724 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2000 crcansciencepubl https://doi.org/10.1139/f99-253 2023-11-19T13:38:58Z Most salmonids, as well as many other freshwater fish species in the Northern Hemisphere, have been reported to show some form of daytime sheltering behaviour over the winter. Previous work has shown that temperatures around 6-8°C trigger the onset of this sheltering behaviour. However, fish from colder environments would be expected to respond differently to temperature than fish from warmer environments. The incidence of sheltering at different temperatures between two Icelandic populations of both juvenile Atlantic salmon (Salmo salar) and juvenile Arctic char (Salvelinus alpinus) was examined by quantifying the use of refuges in identical controlled laboratory conditions. The results showed clear differences in the sheltering response between the different populations. Salmon from a warm, productive stream and riverine char emerged more by day from their shelter at low temperatures (5-8°C) than did either salmon from a cold, unproductive stream or char from a landlocked lake population. These population differences indicate local adaptations that must be kept in mind when managing fish populations; moreover, the differences do not appear to be predictable on the basis of ambient thermal regimes. Article in Journal/Newspaper Arctic Atlantic salmon Salmo salar Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 57 4 719 724 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
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English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Valdimarsson, Sveinn K Metcalfe, Neil B Skúlason, Skúli Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Most salmonids, as well as many other freshwater fish species in the Northern Hemisphere, have been reported to show some form of daytime sheltering behaviour over the winter. Previous work has shown that temperatures around 6-8°C trigger the onset of this sheltering behaviour. However, fish from colder environments would be expected to respond differently to temperature than fish from warmer environments. The incidence of sheltering at different temperatures between two Icelandic populations of both juvenile Atlantic salmon (Salmo salar) and juvenile Arctic char (Salvelinus alpinus) was examined by quantifying the use of refuges in identical controlled laboratory conditions. The results showed clear differences in the sheltering response between the different populations. Salmon from a warm, productive stream and riverine char emerged more by day from their shelter at low temperatures (5-8°C) than did either salmon from a cold, unproductive stream or char from a landlocked lake population. These population differences indicate local adaptations that must be kept in mind when managing fish populations; moreover, the differences do not appear to be predictable on the basis of ambient thermal regimes. |
format |
Article in Journal/Newspaper |
author |
Valdimarsson, Sveinn K Metcalfe, Neil B Skúlason, Skúli |
author_facet |
Valdimarsson, Sveinn K Metcalfe, Neil B Skúlason, Skúli |
author_sort |
Valdimarsson, Sveinn K |
title |
Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
title_short |
Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
title_full |
Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
title_fullStr |
Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
title_full_unstemmed |
Experimental demonstration of differences in sheltering behaviour between Icelandic populations of Atlantic salmon ( Salmo salar ) and Arctic char ( Salvelinus alpinus ) |
title_sort |
experimental demonstration of differences in sheltering behaviour between icelandic populations of atlantic salmon ( salmo salar ) and arctic char ( salvelinus alpinus ) |
publisher |
Canadian Science Publishing |
publishDate |
2000 |
url |
http://dx.doi.org/10.1139/f99-253 http://www.nrcresearchpress.com/doi/pdf/10.1139/f99-253 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Atlantic salmon Salmo salar Salvelinus alpinus |
genre_facet |
Arctic Atlantic salmon Salmo salar Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 4, page 719-724 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f99-253 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
4 |
container_start_page |
719 |
op_container_end_page |
724 |
_version_ |
1785576804763828224 |