Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway
The annual seaward migration of Arctic char (Salvelinus alpinus) from the Vardnes River, northern Norway usually takes place early in summer, between the end of May and the beginning of June. A period of very fast growth was recorded immediately following the entry of char into the sea. Mean daily g...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1989
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Online Access: | http://dx.doi.org/10.1139/f89-123 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-123 |
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crcansciencepubl:10.1139/f89-123 2024-05-12T07:59:08+00:00 Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway Berg, Ole Kristian Berg, Magnus 1989 http://dx.doi.org/10.1139/f89-123 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-123 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 6, page 955-960 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1989 crcansciencepubl https://doi.org/10.1139/f89-123 2024-04-18T06:54:48Z The annual seaward migration of Arctic char (Salvelinus alpinus) from the Vardnes River, northern Norway usually takes place early in summer, between the end of May and the beginning of June. A period of very fast growth was recorded immediately following the entry of char into the sea. Mean daily growth rates of both small and large char decreased with increasing length of time spent at sea, particularly after the end of June. Almost no further increase in length took place in the sea after the beginning of July. Sea temperature was low during this early growth period, rising to above 10 °C during the period when sea char growth declined. Char appeared to be especially well adapted to low temperatures, since their growth rate during this early period was from two to four times faster than that recorded for sympatric sea trout (Salmo trutta). The results support the hypothesis that sea temperature may be one of the factors that control the southern distribution of anadromous Arctic char. Article in Journal/Newspaper Arctic Northern Norway Salvelinus alpinus Canadian Science Publishing Arctic Norway Vardnes ENVELOPE(27.114,27.114,70.748,70.748) Canadian Journal of Fisheries and Aquatic Sciences 46 6 955 960 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Berg, Ole Kristian Berg, Magnus Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The annual seaward migration of Arctic char (Salvelinus alpinus) from the Vardnes River, northern Norway usually takes place early in summer, between the end of May and the beginning of June. A period of very fast growth was recorded immediately following the entry of char into the sea. Mean daily growth rates of both small and large char decreased with increasing length of time spent at sea, particularly after the end of June. Almost no further increase in length took place in the sea after the beginning of July. Sea temperature was low during this early growth period, rising to above 10 °C during the period when sea char growth declined. Char appeared to be especially well adapted to low temperatures, since their growth rate during this early period was from two to four times faster than that recorded for sympatric sea trout (Salmo trutta). The results support the hypothesis that sea temperature may be one of the factors that control the southern distribution of anadromous Arctic char. |
format |
Article in Journal/Newspaper |
author |
Berg, Ole Kristian Berg, Magnus |
author_facet |
Berg, Ole Kristian Berg, Magnus |
author_sort |
Berg, Ole Kristian |
title |
Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
title_short |
Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
title_full |
Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
title_fullStr |
Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
title_full_unstemmed |
Sea Growth and Time of Migration of Anadromous Arctic Char ( Salvelinus alpinus ) from the Vardnes River, in Northern Norway |
title_sort |
sea growth and time of migration of anadromous arctic char ( salvelinus alpinus ) from the vardnes river, in northern norway |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/f89-123 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-123 |
long_lat |
ENVELOPE(27.114,27.114,70.748,70.748) |
geographic |
Arctic Norway Vardnes |
geographic_facet |
Arctic Norway Vardnes |
genre |
Arctic Northern Norway Salvelinus alpinus |
genre_facet |
Arctic Northern Norway Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 6, page 955-960 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f89-123 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
46 |
container_issue |
6 |
container_start_page |
955 |
op_container_end_page |
960 |
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1798840094057037824 |