Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment
Survival, growth, and diet were compared for farmed, hybrid, and wild Atlantic salmon (Salmo salar) families from the eyed egg to the smolt stage in River Guddalselva, Hardangerfjord, Norway. All individuals that survived until the smolt stage were captured in a Wolf trap and identified to one of th...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | https://pure.au.dk/portal/da/publications/performance-of-farmed-hybrid-and-wild-atlantic-salmon-salmo-salar-families-in-a-natural-river-environment(5f5c674b-f4c0-44e2-bbf5-748d55065066).html https://doi.org/10.1139/f2012-118 http://www.scopus.com/inward/record.url?scp=84871006809&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/5f5c674b-f4c0-44e2-bbf5-748d55065066 2023-05-15T15:31:09+02:00 Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment Skaala, Ø. Glover, K.A. Svåsand, T. Besnier, F. Barlaup, B.T. Hansen, M.M. Borgstrøm, R. 2012-01-01 https://pure.au.dk/portal/da/publications/performance-of-farmed-hybrid-and-wild-atlantic-salmon-salmo-salar-families-in-a-natural-river-environment(5f5c674b-f4c0-44e2-bbf5-748d55065066).html https://doi.org/10.1139/f2012-118 http://www.scopus.com/inward/record.url?scp=84871006809&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Skaala , Ø , Glover , K A , Svåsand , T , Besnier , F , Barlaup , B T , Hansen , M M & Borgstrøm , R 2012 , ' Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 69 , no. 12 , pp. 1994-2006 . https://doi.org/10.1139/f2012-118 article 2012 ftuniaarhuspubl https://doi.org/10.1139/f2012-118 2023-01-18T23:54:39Z Survival, growth, and diet were compared for farmed, hybrid, and wild Atlantic salmon (Salmo salar) families from the eyed egg to the smolt stage in River Guddalselva, Hardangerfjord, Norway. All individuals that survived until the smolt stage were captured in a Wolf trap and identified to one of the 69 experimental families using microsatellite markers. Survival of farmed salmon progeny was significantly lower than that of hybrids and wild progeny. However, survival varied considerably, from 0.17% to 6.4%, among farmed families. Egg size had an important influence on survival. Halfsib hybrid families with a farmed mother had higher survival when fathered by wild salmon than by farmed salmon. The overall relative survival of farmed families compared with that of their hybrid half-sib families fell from 0.86 in the second cohort to 0.62 in the last cohort with increasing fish density. Smolts of farmed parents showed significantly higher growth rates than wild and hybrid smolts. The overlap in diet among types of crosses demonstrates competition, and farm and hybrid progeny therefore will reduce the river's capacity for production of wild salmon. Article in Journal/Newspaper Atlantic salmon Salmo salar Aarhus University: Research Norway Canadian Journal of Fisheries and Aquatic Sciences 69 12 1994 2006 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Survival, growth, and diet were compared for farmed, hybrid, and wild Atlantic salmon (Salmo salar) families from the eyed egg to the smolt stage in River Guddalselva, Hardangerfjord, Norway. All individuals that survived until the smolt stage were captured in a Wolf trap and identified to one of the 69 experimental families using microsatellite markers. Survival of farmed salmon progeny was significantly lower than that of hybrids and wild progeny. However, survival varied considerably, from 0.17% to 6.4%, among farmed families. Egg size had an important influence on survival. Halfsib hybrid families with a farmed mother had higher survival when fathered by wild salmon than by farmed salmon. The overall relative survival of farmed families compared with that of their hybrid half-sib families fell from 0.86 in the second cohort to 0.62 in the last cohort with increasing fish density. Smolts of farmed parents showed significantly higher growth rates than wild and hybrid smolts. The overlap in diet among types of crosses demonstrates competition, and farm and hybrid progeny therefore will reduce the river's capacity for production of wild salmon. |
format |
Article in Journal/Newspaper |
author |
Skaala, Ø. Glover, K.A. Svåsand, T. Besnier, F. Barlaup, B.T. Hansen, M.M. Borgstrøm, R. |
spellingShingle |
Skaala, Ø. Glover, K.A. Svåsand, T. Besnier, F. Barlaup, B.T. Hansen, M.M. Borgstrøm, R. Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
author_facet |
Skaala, Ø. Glover, K.A. Svåsand, T. Besnier, F. Barlaup, B.T. Hansen, M.M. Borgstrøm, R. |
author_sort |
Skaala, Ø. |
title |
Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
title_short |
Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
title_full |
Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
title_fullStr |
Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
title_full_unstemmed |
Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment |
title_sort |
performance of farmed, hybrid, and wild atlantic salmon (salmo salar) families in a natural river environment |
publishDate |
2012 |
url |
https://pure.au.dk/portal/da/publications/performance-of-farmed-hybrid-and-wild-atlantic-salmon-salmo-salar-families-in-a-natural-river-environment(5f5c674b-f4c0-44e2-bbf5-748d55065066).html https://doi.org/10.1139/f2012-118 http://www.scopus.com/inward/record.url?scp=84871006809&partnerID=8YFLogxK |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Skaala , Ø , Glover , K A , Svåsand , T , Besnier , F , Barlaup , B T , Hansen , M M & Borgstrøm , R 2012 , ' Performance of farmed, hybrid, and wild atlantic salmon (Salmo salar) families in a natural river environment ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 69 , no. 12 , pp. 1994-2006 . https://doi.org/10.1139/f2012-118 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1139/f2012-118 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
69 |
container_issue |
12 |
container_start_page |
1994 |
op_container_end_page |
2006 |
_version_ |
1766361647102820352 |