Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection
Comparing observed versus theoretically expected evolutionary responses is important for our understanding of the evolutionary process, and for assessing how species may cope with anthropogenic change. Here, we document directional selection for larger female size in Atlantic salmon, using pedigree‐...
Published in: | Ecology and Evolution |
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Online Access: | https://pure.qub.ac.uk/en/publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 https://doi.org/10.1002/ece3.5274 https://pureadmin.qub.ac.uk/ws/files/174244354/O_Sullivan_et_al_2019.pdf |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 2024-09-15T17:56:11+00:00 Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection O’Sullivan, Ronan James Aykanat, Tutku Johnston, Susan E. Kane, Adam Poole, Russell Rogan, Ger Prodohl, Paulo Primmer, Craig R. McGinnity, Philip Reed, Thomas 2019-06-27 application/pdf https://pure.qub.ac.uk/en/publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 https://doi.org/10.1002/ece3.5274 https://pureadmin.qub.ac.uk/ws/files/174244354/O_Sullivan_et_al_2019.pdf eng eng https://pure.qub.ac.uk/en/publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 info:eu-repo/semantics/openAccess O’Sullivan , R J , Aykanat , T , Johnston , S E , Kane , A , Poole , R , Rogan , G , Prodohl , P , Primmer , C R , McGinnity , P & Reed , T 2019 , ' Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection ' , Evolutionary Applications , pp. 7096-7111 . https://doi.org/10.1002/ece3.5274 Atlantic salmon Breeder’s equation pedigree phenotypic selection secondary theorem of selection article 2019 ftqueensubelpubl https://doi.org/10.1002/ece3.5274 2024-07-08T23:45:08Z Comparing observed versus theoretically expected evolutionary responses is important for our understanding of the evolutionary process, and for assessing how species may cope with anthropogenic change. Here, we document directional selection for larger female size in Atlantic salmon, using pedigree‐derived estimates of lifetime reproductive success as a fitness measure. We show the trait is heritable and, thus, capable of responding to selection. The Breeder's Equation, which predicts microevolution as the product of phenotypic selection and heritability, predicted evolution of larger size. This was at odds, however, with the observed lack of either phenotypic or genetic temporal trends in body size, a so‐called “paradox of stasis.” To investigate this paradox, we estimated the additive genetic covariance between trait and fitness, which provides a prediction of evolutionary change according to Robertson's secondary theorem of selection (STS) that is unbiased by missing variables. The STS prediction was consistent with the observed stasis. Decomposition of phenotypic selection gradients into genetic and environmental components revealed a potential upward bias, implying unmeasured factors that covary with trait and fitness. These results showcase the power of pedigreed, wild population studies—which have largely been limited to birds and mammals—to study evolutionary processes on contemporary timescales Article in Journal/Newspaper Atlantic salmon Queen's University Belfast Research Portal Ecology and Evolution 9 12 7096 7111 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Atlantic salmon Breeder’s equation pedigree phenotypic selection secondary theorem of selection |
spellingShingle |
Atlantic salmon Breeder’s equation pedigree phenotypic selection secondary theorem of selection O’Sullivan, Ronan James Aykanat, Tutku Johnston, Susan E. Kane, Adam Poole, Russell Rogan, Ger Prodohl, Paulo Primmer, Craig R. McGinnity, Philip Reed, Thomas Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
topic_facet |
Atlantic salmon Breeder’s equation pedigree phenotypic selection secondary theorem of selection |
description |
Comparing observed versus theoretically expected evolutionary responses is important for our understanding of the evolutionary process, and for assessing how species may cope with anthropogenic change. Here, we document directional selection for larger female size in Atlantic salmon, using pedigree‐derived estimates of lifetime reproductive success as a fitness measure. We show the trait is heritable and, thus, capable of responding to selection. The Breeder's Equation, which predicts microevolution as the product of phenotypic selection and heritability, predicted evolution of larger size. This was at odds, however, with the observed lack of either phenotypic or genetic temporal trends in body size, a so‐called “paradox of stasis.” To investigate this paradox, we estimated the additive genetic covariance between trait and fitness, which provides a prediction of evolutionary change according to Robertson's secondary theorem of selection (STS) that is unbiased by missing variables. The STS prediction was consistent with the observed stasis. Decomposition of phenotypic selection gradients into genetic and environmental components revealed a potential upward bias, implying unmeasured factors that covary with trait and fitness. These results showcase the power of pedigreed, wild population studies—which have largely been limited to birds and mammals—to study evolutionary processes on contemporary timescales |
format |
Article in Journal/Newspaper |
author |
O’Sullivan, Ronan James Aykanat, Tutku Johnston, Susan E. Kane, Adam Poole, Russell Rogan, Ger Prodohl, Paulo Primmer, Craig R. McGinnity, Philip Reed, Thomas |
author_facet |
O’Sullivan, Ronan James Aykanat, Tutku Johnston, Susan E. Kane, Adam Poole, Russell Rogan, Ger Prodohl, Paulo Primmer, Craig R. McGinnity, Philip Reed, Thomas |
author_sort |
O’Sullivan, Ronan James |
title |
Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
title_short |
Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
title_full |
Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
title_fullStr |
Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
title_full_unstemmed |
Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
title_sort |
evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection |
publishDate |
2019 |
url |
https://pure.qub.ac.uk/en/publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 https://doi.org/10.1002/ece3.5274 https://pureadmin.qub.ac.uk/ws/files/174244354/O_Sullivan_et_al_2019.pdf |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
O’Sullivan , R J , Aykanat , T , Johnston , S E , Kane , A , Poole , R , Rogan , G , Prodohl , P , Primmer , C R , McGinnity , P & Reed , T 2019 , ' Evolutionary stasis of a heritable morphological trait in a wild fish population despite apparent directional selection ' , Evolutionary Applications , pp. 7096-7111 . https://doi.org/10.1002/ece3.5274 |
op_relation |
https://pure.qub.ac.uk/en/publications/271cbbc2-fc4b-4aff-a676-d2b1e516b774 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ece3.5274 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
12 |
container_start_page |
7096 |
op_container_end_page |
7111 |
_version_ |
1810432404115947520 |