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 sex...
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ftpubmed:oai:pubmedcentral.nih.gov:5182431 2023-05-15T15:31:23+02:00 Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution Kuparinen, Anna Hutchings, Jeffrey A. 2017-01-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182431/ http://www.ncbi.nlm.nih.gov/pubmed/27920380 https://doi.org/10.1098/rstb.2016.0035 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182431/ http://www.ncbi.nlm.nih.gov/pubmed/27920380 http://dx.doi.org/10.1098/rstb.2016.0035 © 2016 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Articles Text 2017 ftpubmed https://doi.org/10.1098/rstb.2016.0035 2018-01-21T01:05:48Z 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. Text Atlantic salmon Salmo salar PubMed Central (PMC) Philosophical Transactions of the Royal Society B: Biological Sciences 372 1712 20160035 |
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Articles Kuparinen, Anna Hutchings, Jeffrey A. Genetic architecture of age at maturity can generate divergent and disruptive harvest-induced evolution |
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Articles |
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. |
format |
Text |
author |
Kuparinen, Anna Hutchings, Jeffrey A. |
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://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182431/ http://www.ncbi.nlm.nih.gov/pubmed/27920380 https://doi.org/10.1098/rstb.2016.0035 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182431/ http://www.ncbi.nlm.nih.gov/pubmed/27920380 http://dx.doi.org/10.1098/rstb.2016.0035 |
op_rights |
© 2016 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
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 |
_version_ |
1766361884806610944 |