Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes
Groups of Arctic char (Salvelinus alpinus) were reared under three experimental light regimes. Two different strains of char were used, one non-migratory from south Norway, the other anadromous from northern Norway. All groups received a continous background illumination. One of the experimental lig...
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ftimr:oai:imr.brage.unit.no:11250/104332 2023-05-15T14:51:33+02:00 Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes Stefansson, Sigurd O. Hansen, Tom Holm, Jens Christian 1987 application/pdf http://hdl.handle.net/11250/104332 eng eng ICES ICES CM Documents;1987/F:37 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/104332 16 s. growth vekst fish farming fiskeoppdrett VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Working paper 1987 ftimr 2021-09-23T20:14:13Z Groups of Arctic char (Salvelinus alpinus) were reared under three experimental light regimes. Two different strains of char were used, one non-migratory from south Norway, the other anadromous from northern Norway. All groups received a continous background illumination. One of the experimental light regimes consisted only of this background illumination. The remaining two treatments consisted of an additional simulated natural photoperiod, using either yellow light or daylight. Growth rate was monitored during the experiment. A Seawater Challenge Test (SWCT) was run for 24 hours to evaluate the ability of the two strains of char to tolerate and survive in seawater. There were no significant differences in growth rate in either strain between the experimental light regimes. Condition factor increased during the experimental period for fish of both strains and all light regimes. Both strains tolerated the SWCT without mortalities. Size seems to be the most important factor for seawater adaptability of Arctic char. There were no signs of a smoltification process as seen in Atlantic salmon (Salmo salar). Report Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus Institute for Marine Research: Brage IMR Arctic Norway |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
growth vekst fish farming fiskeoppdrett VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
growth vekst fish farming fiskeoppdrett VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Stefansson, Sigurd O. Hansen, Tom Holm, Jens Christian Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
topic_facet |
growth vekst fish farming fiskeoppdrett VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
description |
Groups of Arctic char (Salvelinus alpinus) were reared under three experimental light regimes. Two different strains of char were used, one non-migratory from south Norway, the other anadromous from northern Norway. All groups received a continous background illumination. One of the experimental light regimes consisted only of this background illumination. The remaining two treatments consisted of an additional simulated natural photoperiod, using either yellow light or daylight. Growth rate was monitored during the experiment. A Seawater Challenge Test (SWCT) was run for 24 hours to evaluate the ability of the two strains of char to tolerate and survive in seawater. There were no significant differences in growth rate in either strain between the experimental light regimes. Condition factor increased during the experimental period for fish of both strains and all light regimes. Both strains tolerated the SWCT without mortalities. Size seems to be the most important factor for seawater adaptability of Arctic char. There were no signs of a smoltification process as seen in Atlantic salmon (Salmo salar). |
format |
Report |
author |
Stefansson, Sigurd O. Hansen, Tom Holm, Jens Christian |
author_facet |
Stefansson, Sigurd O. Hansen, Tom Holm, Jens Christian |
author_sort |
Stefansson, Sigurd O. |
title |
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
title_short |
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
title_full |
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
title_fullStr |
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
title_full_unstemmed |
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes |
title_sort |
seawater adaptability of two strains of arctic char (salvelinus alpinus) reared under different light regimes |
publisher |
ICES |
publishDate |
1987 |
url |
http://hdl.handle.net/11250/104332 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus |
genre_facet |
Arctic Atlantic salmon Northern Norway Salmo salar Salvelinus alpinus |
op_source |
16 s. |
op_relation |
ICES CM Documents;1987/F:37 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/104332 |
_version_ |
1766322690883321856 |