Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution
Life-history traits are generally assumed to be inherited quantitatively. Fishing that targets large, old individuals is expected to decrease age at maturity. In Atlantic salmon ( Salmo salar ), it has recently been discovered that sea age at maturity is under strong control by a single locus with s...
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crroyalsociety:10.1098/rstb.2016.0035 2024-06-02T08:03:34+00:00 Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution Kuparinen, Anna Hutchings, Jeffrey A. Suomen Akatemia Natural Sciences and Engineering Research Council of Canada 2017 http://dx.doi.org/10.1098/rstb.2016.0035 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2016.0035 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2016.0035 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society B: Biological Sciences volume 372, issue 1712, page 20160035 ISSN 0962-8436 1471-2970 journal-article 2017 crroyalsociety https://doi.org/10.1098/rstb.2016.0035 2024-05-07T14:16:41Z Life-history traits are generally assumed to be inherited quantitatively. Fishing that targets large, old individuals is expected to decrease age at maturity. In Atlantic salmon ( Salmo salar ), it has recently been discovered that sea age at maturity is under strong control by a single locus with sexually dimorphic expression of heterozygotes, which makes it less intuitive to predict how life histories respond to selective fishing. We explore evolutionary responses to fishing in Atlantic salmon, using eco-evolutionary simulations with two alternative scenarios for the genetic architecture of age at maturity: (i) control by multiple loci with additive effects and (ii) control by one locus with sexually dimorphic expression. We show that multi-locus control leads to unidirectional evolution towards earlier maturation, whereas single-locus control causes largely divergent and disruptive evolution of age at maturity without a clear phenotypic trend but a wide range of alternative evolutionary trajectories and greater trait variability within trajectories. Our results indicate that the range of evolutionary responses to selective fishing can be wider than previously thought and that a lack of phenotypic trend need not imply that evolution has not occurred. These findings underscore the role of genetic architecture of life-history traits in understanding how human-induced selection can shape target populations. This article is part of the themed issue ‘Human influences on evolution, and the ecological and societal consequences’. Article in Journal/Newspaper Atlantic salmon Salmo salar The Royal Society Philosophical Transactions of the Royal Society B: Biological Sciences 372 1712 20160035 |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Life-history traits are generally assumed to be inherited quantitatively. Fishing that targets large, old individuals is expected to decrease age at maturity. In Atlantic salmon ( Salmo salar ), it has recently been discovered that sea age at maturity is under strong control by a single locus with sexually dimorphic expression of heterozygotes, which makes it less intuitive to predict how life histories respond to selective fishing. We explore evolutionary responses to fishing in Atlantic salmon, using eco-evolutionary simulations with two alternative scenarios for the genetic architecture of age at maturity: (i) control by multiple loci with additive effects and (ii) control by one locus with sexually dimorphic expression. We show that multi-locus control leads to unidirectional evolution towards earlier maturation, whereas single-locus control causes largely divergent and disruptive evolution of age at maturity without a clear phenotypic trend but a wide range of alternative evolutionary trajectories and greater trait variability within trajectories. Our results indicate that the range of evolutionary responses to selective fishing can be wider than previously thought and that a lack of phenotypic trend need not imply that evolution has not occurred. These findings underscore the role of genetic architecture of life-history traits in understanding how human-induced selection can shape target populations. This article is part of the themed issue ‘Human influences on evolution, and the ecological and societal consequences’. |
author2 |
Suomen Akatemia Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Kuparinen, Anna Hutchings, Jeffrey A. |
spellingShingle |
Kuparinen, Anna Hutchings, Jeffrey A. Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
author_facet |
Kuparinen, Anna Hutchings, Jeffrey A. |
author_sort |
Kuparinen, Anna |
title |
Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
title_short |
Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
title_full |
Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
title_fullStr |
Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
title_full_unstemmed |
Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
title_sort |
genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rstb.2016.0035 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2016.0035 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2016.0035 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Philosophical Transactions of the Royal Society B: Biological Sciences volume 372, issue 1712, page 20160035 ISSN 0962-8436 1471-2970 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.2016.0035 |
container_title |
Philosophical Transactions of the Royal Society B: Biological Sciences |
container_volume |
372 |
container_issue |
1712 |
container_start_page |
20160035 |
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1800748140845858816 |