Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar)
Delaying sexual maturation can lead to larger body size and higher reproductive success, but carries an increased risk of death before reproducing. Classical life history theory predicts that trade-offs between reproductive success and survival should lead to the evolution of an optimal strategy in...
Published in: | Molecular Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://pure.uhi.ac.uk/en/publications/99463815-e88a-4b27-bc3b-8e71444e3c8d https://doi.org/10.1111/mec.12832 http://www.scopus.com/inward/record.url?scp=84903956923&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84903956923&partnerID=8YFLogxK |
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ftuhipublicatio:oai:pure.atira.dk:publications/99463815-e88a-4b27-bc3b-8e71444e3c8d 2024-05-12T08:01:14+00:00 Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) Johnston, Susan E. Orell, Panu Pritchard, Victoria L. Kent, Matthew P. Lien, Sigbjørn Niemelä, Eero Erkinaro, Jaakko Primmer, Craig R. 2014-06-13 https://pure.uhi.ac.uk/en/publications/99463815-e88a-4b27-bc3b-8e71444e3c8d https://doi.org/10.1111/mec.12832 http://www.scopus.com/inward/record.url?scp=84903956923&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84903956923&partnerID=8YFLogxK eng eng https://pure.uhi.ac.uk/en/publications/99463815-e88a-4b27-bc3b-8e71444e3c8d info:eu-repo/semantics/closedAccess Johnston , S E , Orell , P , Pritchard , V L , Kent , M P , Lien , S , Niemelä , E , Erkinaro , J & Primmer , C R 2014 , ' Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) ' , Molecular ecology , vol. 23 , no. 14 , pp. 3452-3468 . https://doi.org/10.1111/mec.12832 genome-wide association life history variation sea age sexual maturity trade-off 7ref2021 article 2014 ftuhipublicatio https://doi.org/10.1111/mec.12832 2024-04-18T00:12:20Z Delaying sexual maturation can lead to larger body size and higher reproductive success, but carries an increased risk of death before reproducing. Classical life history theory predicts that trade-offs between reproductive success and survival should lead to the evolution of an optimal strategy in a given population. However, variation in mating strategies generally persists, and in general, there remains a poor understanding of genetic and physiological mechanisms underlying this variation. One extreme case of this is in the Atlantic salmon (Salmo salar), which can show variation in the age at which they return from their marine migration to spawn (i.e. their 'sea age'). This results in large size differences between strategies, with direct implications for individual fitness. Here, we used an Illumina Infinium SNP array to identify regions of the genome associated with variation in sea age in a large population of Atlantic salmon in Northern Europe, implementing individual-based genome-wide association studies (GWAS) and population-based F ST outlier analyses. We identified several regions of the genome which vary in association with phenotype and/or selection between sea ages, with nearby genes having functions related to muscle development, metabolism, immune response and mate choice. In addition, we found that individuals of different sea ages belong to different, yet sympatric populations in this system, indicating that reproductive isolation may be driven by divergence between stable strategies. Overall, this study demonstrates how genome-wide methodologies can be integrated with samples collected from wild, structured populations to understand their ecology and evolution in a natural context. Article in Journal/Newspaper Atlantic salmon Salmo salar University of the Highlands and Islands: Research Database of UHI Molecular Ecology 23 14 3452 3468 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
genome-wide association life history variation sea age sexual maturity trade-off 7ref2021 |
spellingShingle |
genome-wide association life history variation sea age sexual maturity trade-off 7ref2021 Johnston, Susan E. Orell, Panu Pritchard, Victoria L. Kent, Matthew P. Lien, Sigbjørn Niemelä, Eero Erkinaro, Jaakko Primmer, Craig R. Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
topic_facet |
genome-wide association life history variation sea age sexual maturity trade-off 7ref2021 |
description |
Delaying sexual maturation can lead to larger body size and higher reproductive success, but carries an increased risk of death before reproducing. Classical life history theory predicts that trade-offs between reproductive success and survival should lead to the evolution of an optimal strategy in a given population. However, variation in mating strategies generally persists, and in general, there remains a poor understanding of genetic and physiological mechanisms underlying this variation. One extreme case of this is in the Atlantic salmon (Salmo salar), which can show variation in the age at which they return from their marine migration to spawn (i.e. their 'sea age'). This results in large size differences between strategies, with direct implications for individual fitness. Here, we used an Illumina Infinium SNP array to identify regions of the genome associated with variation in sea age in a large population of Atlantic salmon in Northern Europe, implementing individual-based genome-wide association studies (GWAS) and population-based F ST outlier analyses. We identified several regions of the genome which vary in association with phenotype and/or selection between sea ages, with nearby genes having functions related to muscle development, metabolism, immune response and mate choice. In addition, we found that individuals of different sea ages belong to different, yet sympatric populations in this system, indicating that reproductive isolation may be driven by divergence between stable strategies. Overall, this study demonstrates how genome-wide methodologies can be integrated with samples collected from wild, structured populations to understand their ecology and evolution in a natural context. |
format |
Article in Journal/Newspaper |
author |
Johnston, Susan E. Orell, Panu Pritchard, Victoria L. Kent, Matthew P. Lien, Sigbjørn Niemelä, Eero Erkinaro, Jaakko Primmer, Craig R. |
author_facet |
Johnston, Susan E. Orell, Panu Pritchard, Victoria L. Kent, Matthew P. Lien, Sigbjørn Niemelä, Eero Erkinaro, Jaakko Primmer, Craig R. |
author_sort |
Johnston, Susan E. |
title |
Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
title_short |
Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
title_full |
Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
title_fullStr |
Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) |
title_sort |
genome-wide snp analysis reveals a genetic basis for sea-age variation in a wild population of atlantic salmon (salmo salar) |
publishDate |
2014 |
url |
https://pure.uhi.ac.uk/en/publications/99463815-e88a-4b27-bc3b-8e71444e3c8d https://doi.org/10.1111/mec.12832 http://www.scopus.com/inward/record.url?scp=84903956923&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84903956923&partnerID=8YFLogxK |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Johnston , S E , Orell , P , Pritchard , V L , Kent , M P , Lien , S , Niemelä , E , Erkinaro , J & Primmer , C R 2014 , ' Genome-wide SNP analysis reveals a genetic basis for sea-age variation in a wild population of Atlantic salmon (Salmo salar) ' , Molecular ecology , vol. 23 , no. 14 , pp. 3452-3468 . https://doi.org/10.1111/mec.12832 |
op_relation |
https://pure.uhi.ac.uk/en/publications/99463815-e88a-4b27-bc3b-8e71444e3c8d |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/mec.12832 |
container_title |
Molecular Ecology |
container_volume |
23 |
container_issue |
14 |
container_start_page |
3452 |
op_container_end_page |
3468 |
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1798843343000567808 |