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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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://dx.doi.org/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-118 |
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crcansciencepubl:10.1139/f2012-118 2024-06-23T07:51:17+00:00 Performance of farmed, hybrid, and wild Atlantic salmon ( Salmo salar) families in a natural river environment Skaala, Øystein Glover, Kevin A. Barlaup, Bjørn T. Svåsand, Terje Besnier, Francois Hansen, Michael M. Borgstrøm, Reidar Fleming, Ian 2012 http://dx.doi.org/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-118 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 69, issue 12, page 1994-2006 ISSN 0706-652X 1205-7533 journal-article 2012 crcansciencepubl https://doi.org/10.1139/f2012-118 2024-06-06T04:11:16Z 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. Half-sib 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 Canadian Science Publishing Norway Canadian Journal of Fisheries and Aquatic Sciences 69 12 1994 2006 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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. Half-sib 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. |
author2 |
Fleming, Ian |
format |
Article in Journal/Newspaper |
author |
Skaala, Øystein Glover, Kevin A. Barlaup, Bjørn T. Svåsand, Terje Besnier, Francois Hansen, Michael M. Borgstrøm, Reidar |
spellingShingle |
Skaala, Øystein Glover, Kevin A. Barlaup, Bjørn T. Svåsand, Terje Besnier, Francois Hansen, Michael M. Borgstrøm, Reidar Performance of farmed, hybrid, and wild Atlantic salmon ( Salmo salar) families in a natural river environment |
author_facet |
Skaala, Øystein Glover, Kevin A. Barlaup, Bjørn T. Svåsand, Terje Besnier, Francois Hansen, Michael M. Borgstrøm, Reidar |
author_sort |
Skaala, Øystein |
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 |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/full-xml/10.1139/f2012-118 http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-118 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 69, issue 12, page 1994-2006 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
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_ |
1802642332857663488 |