Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon
Although studies addressing natural selection have primarily focused on additive genetic effects because of their direct relationship with responses to selection, nonadditive genetic and maternal effects can also significantly influence phenotypes. We partitioned the phenotypic variance of survival...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/cjfas-2014-0472 2024-10-06T13:47:21+00:00 Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon Houde, Aimee Lee S. Black, Craig A. Wilson, Chris C. Pitcher, Trevor E. Neff, Bryan D. Morán, Paloma 2015 http://dx.doi.org/10.1139/cjfas-2014-0472 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2014-0472 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2014-0472 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 72, issue 5, page 751-758 ISSN 0706-652X 1205-7533 journal-article 2015 crcansciencepubl https://doi.org/10.1139/cjfas-2014-0472 2024-09-12T04:13:25Z Although studies addressing natural selection have primarily focused on additive genetic effects because of their direct relationship with responses to selection, nonadditive genetic and maternal effects can also significantly influence phenotypes. We partitioned the phenotypic variance of survival and fitness-related traits in juvenile Atlantic salmon (Salmo salar) from three allopatric populations (LaHave, Sebago, and Saint-Jean) into additive genetic, nonadditive genetic, and maternal environmental effects using a full-factorial breeding design. We also modelled the potential increase in offspring performance if nonrandom mating (e.g., mate choice) is considered instead of random mating. The three populations exhibited significant differences in trait values as well as the genetic architecture of the traits. Nevertheless, nonadditive genetic and maternal environmental effects tended to be larger than the additive genetic effects. There was also a shift from maternal environmental to genetic effects during development in two of the populations. That is, maternal environmental effects were larger at early (egg and alevin) life stages, whereas nonadditive effects were larger at the later (fry) life stage. The amount of additive genetic effects was small, suggesting the traits will respond slowly to selection. We discuss how different maternal environmental effects across years may influence the genetic architecture of offspring traits. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 72 5 751 758 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Although studies addressing natural selection have primarily focused on additive genetic effects because of their direct relationship with responses to selection, nonadditive genetic and maternal effects can also significantly influence phenotypes. We partitioned the phenotypic variance of survival and fitness-related traits in juvenile Atlantic salmon (Salmo salar) from three allopatric populations (LaHave, Sebago, and Saint-Jean) into additive genetic, nonadditive genetic, and maternal environmental effects using a full-factorial breeding design. We also modelled the potential increase in offspring performance if nonrandom mating (e.g., mate choice) is considered instead of random mating. The three populations exhibited significant differences in trait values as well as the genetic architecture of the traits. Nevertheless, nonadditive genetic and maternal environmental effects tended to be larger than the additive genetic effects. There was also a shift from maternal environmental to genetic effects during development in two of the populations. That is, maternal environmental effects were larger at early (egg and alevin) life stages, whereas nonadditive effects were larger at the later (fry) life stage. The amount of additive genetic effects was small, suggesting the traits will respond slowly to selection. We discuss how different maternal environmental effects across years may influence the genetic architecture of offspring traits. |
author2 |
Morán, Paloma |
format |
Article in Journal/Newspaper |
author |
Houde, Aimee Lee S. Black, Craig A. Wilson, Chris C. Pitcher, Trevor E. Neff, Bryan D. |
spellingShingle |
Houde, Aimee Lee S. Black, Craig A. Wilson, Chris C. Pitcher, Trevor E. Neff, Bryan D. Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
author_facet |
Houde, Aimee Lee S. Black, Craig A. Wilson, Chris C. Pitcher, Trevor E. Neff, Bryan D. |
author_sort |
Houde, Aimee Lee S. |
title |
Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
title_short |
Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
title_full |
Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
title_fullStr |
Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
title_full_unstemmed |
Genetic and maternal effects on juvenile survival and fitness-related traits in three populations of Atlantic salmon |
title_sort |
genetic and maternal effects on juvenile survival and fitness-related traits in three populations of atlantic salmon |
publisher |
Canadian Science Publishing |
publishDate |
2015 |
url |
http://dx.doi.org/10.1139/cjfas-2014-0472 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2014-0472 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2014-0472 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 72, issue 5, page 751-758 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2014-0472 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
72 |
container_issue |
5 |
container_start_page |
751 |
op_container_end_page |
758 |
_version_ |
1812175570883051520 |