Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon
Abstract A controlled Saprolegnia parasitica infection model was used to challenge 1158 fish representing 105 pedigreed Atlantic salmon families to evaluate the possibility of selecting for Saprolegnia resistance in a commercial breeding programme. Fish were infected in five study tanks and observed...
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crwiley:10.1111/jfd.13664 2023-12-03T10:19:27+01:00 Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon Misk, Ehab Gonen, Serap Garber, Amber F. Atlantic Canada Opportunities Agency New Brunswick Innovation Foundation 2022 http://dx.doi.org/10.1111/jfd.13664 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.13664 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfd.13664 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Fish Diseases volume 45, issue 9, page 1333-1342 ISSN 0140-7775 1365-2761 Veterinary (miscellaneous) Aquatic Science journal-article 2022 crwiley https://doi.org/10.1111/jfd.13664 2023-11-09T13:29:35Z Abstract A controlled Saprolegnia parasitica infection model was used to challenge 1158 fish representing 105 pedigreed Atlantic salmon families to evaluate the possibility of selecting for Saprolegnia resistance in a commercial breeding programme. Fish were infected in five study tanks and observed for 40 days post‐infection for lesion score and survival. Survival analysis of the top 10 resistant and bottom 10 susceptible families indicated that the hazard of dying following Saprolegnia infection was 1509% higher in susceptible families. In all fish, a 10 g increase in weight correlated with a 7.8% increase in the hazard of dying while sex did not affect mortality. Resistance to Saprolegnia was estimated to have a heritability of 0.25, indicating that selection is possible. Genetic and phenotypic correlations indicated that the 11‐point scoring system, developed in this study to quantify Saprolegnia infection severity, had a high negative correlation with survival as days to mortality at ≥−0.922(±0.005), suggesting that the scoring method could help assess lesion development in studies where mortality is not the primary biological endpoint. Article in Journal/Newspaper Atlantic salmon Wiley Online Library (via Crossref) Journal of Fish Diseases 45 9 1333 1342 |
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English |
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Veterinary (miscellaneous) Aquatic Science |
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Veterinary (miscellaneous) Aquatic Science Misk, Ehab Gonen, Serap Garber, Amber F. Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
topic_facet |
Veterinary (miscellaneous) Aquatic Science |
description |
Abstract A controlled Saprolegnia parasitica infection model was used to challenge 1158 fish representing 105 pedigreed Atlantic salmon families to evaluate the possibility of selecting for Saprolegnia resistance in a commercial breeding programme. Fish were infected in five study tanks and observed for 40 days post‐infection for lesion score and survival. Survival analysis of the top 10 resistant and bottom 10 susceptible families indicated that the hazard of dying following Saprolegnia infection was 1509% higher in susceptible families. In all fish, a 10 g increase in weight correlated with a 7.8% increase in the hazard of dying while sex did not affect mortality. Resistance to Saprolegnia was estimated to have a heritability of 0.25, indicating that selection is possible. Genetic and phenotypic correlations indicated that the 11‐point scoring system, developed in this study to quantify Saprolegnia infection severity, had a high negative correlation with survival as days to mortality at ≥−0.922(±0.005), suggesting that the scoring method could help assess lesion development in studies where mortality is not the primary biological endpoint. |
author2 |
Atlantic Canada Opportunities Agency New Brunswick Innovation Foundation |
format |
Article in Journal/Newspaper |
author |
Misk, Ehab Gonen, Serap Garber, Amber F. |
author_facet |
Misk, Ehab Gonen, Serap Garber, Amber F. |
author_sort |
Misk, Ehab |
title |
Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
title_short |
Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
title_full |
Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
title_fullStr |
Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
title_full_unstemmed |
Resistance to Saprolegnia parasitica infection: A heritable trait in Atlantic salmon |
title_sort |
resistance to saprolegnia parasitica infection: a heritable trait in atlantic salmon |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/jfd.13664 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.13664 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfd.13664 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Journal of Fish Diseases volume 45, issue 9, page 1333-1342 ISSN 0140-7775 1365-2761 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/jfd.13664 |
container_title |
Journal of Fish Diseases |
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45 |
container_issue |
9 |
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1333 |
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1342 |
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1784266729342369792 |