Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks
We estimated additive genetic variation and heritability of survival after Gyrodactylus salaris infection from survival records in a pedigreed family material of wild Atlantic salmon ( Salmo salar ) in a controlled challenge test. We used a statistical model that distinguishes between survival time...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f09-168 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-168 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-168 |
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crcansciencepubl:10.1139/f09-168 2024-03-03T08:42:48+00:00 Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks Salte, Ragnar Bentsen, Hans Bernhard Moen, Thomas Tripathy, Smita Bakke, Tor Andreas Ødegård, Jørgen Omholt, Stig Hansen, Lars Petter Taylor, Eric 2010 http://dx.doi.org/10.1139/f09-168 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-168 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-168 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 1, page 121-129 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2010 crcansciencepubl https://doi.org/10.1139/f09-168 2024-02-07T10:53:36Z We estimated additive genetic variation and heritability of survival after Gyrodactylus salaris infection from survival records in a pedigreed family material of wild Atlantic salmon ( Salmo salar ) in a controlled challenge test. We used a statistical model that distinguishes between survival time for the fish that died and the ability to survive the entire test as two separate traits. Eleven of the 49 full-sib families suffered 100% mortality, 15 families had between 10% and 25% survival, and the four least affected families had survival rates between 36% and 48%. Estimated heritability of survival on the liability scale was 0.32 ± 0.10. Time until death for fish that died during the test and the ability to survive the entire test were not expressions of the same genetic trait. Simply selecting survivors as parents for the next generation is expected to more than double the overall survival rate in only one generation, given similar exposure to the parasite. Improving the genetic capacity to survive the infection will probably not eradicate the parasite, but when used as a disease control measure, such improvement may contain the infection at a level where the parasite ceases to be a major problem. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 67 1 121 129 |
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Open Polar |
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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 Salte, Ragnar Bentsen, Hans Bernhard Moen, Thomas Tripathy, Smita Bakke, Tor Andreas Ødegård, Jørgen Omholt, Stig Hansen, Lars Petter Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
We estimated additive genetic variation and heritability of survival after Gyrodactylus salaris infection from survival records in a pedigreed family material of wild Atlantic salmon ( Salmo salar ) in a controlled challenge test. We used a statistical model that distinguishes between survival time for the fish that died and the ability to survive the entire test as two separate traits. Eleven of the 49 full-sib families suffered 100% mortality, 15 families had between 10% and 25% survival, and the four least affected families had survival rates between 36% and 48%. Estimated heritability of survival on the liability scale was 0.32 ± 0.10. Time until death for fish that died during the test and the ability to survive the entire test were not expressions of the same genetic trait. Simply selecting survivors as parents for the next generation is expected to more than double the overall survival rate in only one generation, given similar exposure to the parasite. Improving the genetic capacity to survive the infection will probably not eradicate the parasite, but when used as a disease control measure, such improvement may contain the infection at a level where the parasite ceases to be a major problem. |
author2 |
Taylor, Eric |
format |
Article in Journal/Newspaper |
author |
Salte, Ragnar Bentsen, Hans Bernhard Moen, Thomas Tripathy, Smita Bakke, Tor Andreas Ødegård, Jørgen Omholt, Stig Hansen, Lars Petter |
author_facet |
Salte, Ragnar Bentsen, Hans Bernhard Moen, Thomas Tripathy, Smita Bakke, Tor Andreas Ødegård, Jørgen Omholt, Stig Hansen, Lars Petter |
author_sort |
Salte, Ragnar |
title |
Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
title_short |
Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
title_full |
Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
title_fullStr |
Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
title_full_unstemmed |
Prospects for a genetic management strategy to control Gyrodactylus salaris infection in wild Atlantic salmon (Salmo salar) stocks |
title_sort |
prospects for a genetic management strategy to control gyrodactylus salaris infection in wild atlantic salmon (salmo salar) stocks |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f09-168 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-168 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-168 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 1, page 121-129 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f09-168 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
129 |
_version_ |
1792498257684856832 |