Evidence of recent signatures of selection during domestication in an Atlantic salmon population
Selective breeding practices in Atlantic salmon aquaculture have been carried out intensively since the 1970s. Along with the phenotypic improvement of fish, we expect to observe genomic regions showing evidence of selection for traits related to growth and age at sexual maturation, as well as trait...
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ftunivchile:oai:repositorio.uchile.cl:2250/141584 2023-05-15T15:29:57+02:00 Evidence of recent signatures of selection during domestication in an Atlantic salmon population Gutierrez, A.P. Yáñez López, José Davidson, W.S. 2016-04 application/pdf https://doi.org/10.1016/j.margen.2015.12.007 https://repositorio.uchile.cl/handle/2250/141584 en eng Elsevier Marine Genomics 26 (2016) 41–50 1876-7478 doi:10.1016/j.margen.2015.12.007 https://repositorio.uchile.cl/handle/2250/141584 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Marine Genomics Atlantic salmon SNP array Domestication Signatures of selection Grilsing Artículo de revista 2016 ftunivchile https://doi.org/10.1016/j.margen.2015.12.007 2023-03-05T00:51:24Z Selective breeding practices in Atlantic salmon aquaculture have been carried out intensively since the 1970s. Along with the phenotypic improvement of fish, we expect to observe genomic regions showing evidence of selection for traits related to growth and age at sexual maturation, as well as traits involved in the domestication process. This is mainly linked to the increase in the frequency of favourable alleles at loci that affect the traits of interest in the breeding population. In this study we searched for signatures of selection in the Cermaq Atlantic salthon broodstock, a Mowi strain, which was derived from wild Norwegian populations, and is now farmed in British Columbia, Canada. A 6.5K SNP array was used to genotype 202 fish from the Cermaq population, and the genotypes were compared with four wild populations from Norway. We used three methods based on F-ST values to detect signatures of selection. Forty four markers showing divergence in allele frequency were identified as outliers by the three detection methods, suggesting the presence of signatures of selection in the Cermaq population relative to their wild counterparts. Markers identified as outliers are associated with molecular functions that could be related to the selection for economically important traits (e.g., growth) as well as the domestication process (e.g., response to pathogens and environmental stressors). Of particular interest were three outlier markers that had been previously associated with grilsing (i.e., early sexual maturation) an undesirable trait, which has been heavily selected against in Atlantic salmon aquaculture. This study provides clear evidence of the presence of signatures of selection and domestication in a farmed Atlantic salmon population. NSERC STPGP/381479-2009 Article in Journal/Newspaper Atlantic salmon Universidad de Chile: Repositorio académico Canada Norway British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Marine Genomics 26 41 50 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Atlantic salmon SNP array Domestication Signatures of selection Grilsing |
spellingShingle |
Atlantic salmon SNP array Domestication Signatures of selection Grilsing Gutierrez, A.P. Yáñez López, José Davidson, W.S. Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
topic_facet |
Atlantic salmon SNP array Domestication Signatures of selection Grilsing |
description |
Selective breeding practices in Atlantic salmon aquaculture have been carried out intensively since the 1970s. Along with the phenotypic improvement of fish, we expect to observe genomic regions showing evidence of selection for traits related to growth and age at sexual maturation, as well as traits involved in the domestication process. This is mainly linked to the increase in the frequency of favourable alleles at loci that affect the traits of interest in the breeding population. In this study we searched for signatures of selection in the Cermaq Atlantic salthon broodstock, a Mowi strain, which was derived from wild Norwegian populations, and is now farmed in British Columbia, Canada. A 6.5K SNP array was used to genotype 202 fish from the Cermaq population, and the genotypes were compared with four wild populations from Norway. We used three methods based on F-ST values to detect signatures of selection. Forty four markers showing divergence in allele frequency were identified as outliers by the three detection methods, suggesting the presence of signatures of selection in the Cermaq population relative to their wild counterparts. Markers identified as outliers are associated with molecular functions that could be related to the selection for economically important traits (e.g., growth) as well as the domestication process (e.g., response to pathogens and environmental stressors). Of particular interest were three outlier markers that had been previously associated with grilsing (i.e., early sexual maturation) an undesirable trait, which has been heavily selected against in Atlantic salmon aquaculture. This study provides clear evidence of the presence of signatures of selection and domestication in a farmed Atlantic salmon population. NSERC STPGP/381479-2009 |
format |
Article in Journal/Newspaper |
author |
Gutierrez, A.P. Yáñez López, José Davidson, W.S. |
author_facet |
Gutierrez, A.P. Yáñez López, José Davidson, W.S. |
author_sort |
Gutierrez, A.P. |
title |
Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
title_short |
Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
title_full |
Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
title_fullStr |
Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
title_full_unstemmed |
Evidence of recent signatures of selection during domestication in an Atlantic salmon population |
title_sort |
evidence of recent signatures of selection during domestication in an atlantic salmon population |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://doi.org/10.1016/j.margen.2015.12.007 https://repositorio.uchile.cl/handle/2250/141584 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
Canada Norway British Columbia |
geographic_facet |
Canada Norway British Columbia |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Marine Genomics |
op_relation |
Marine Genomics 26 (2016) 41–50 1876-7478 doi:10.1016/j.margen.2015.12.007 https://repositorio.uchile.cl/handle/2250/141584 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.margen.2015.12.007 |
container_title |
Marine Genomics |
container_volume |
26 |
container_start_page |
41 |
op_container_end_page |
50 |
_version_ |
1766360408217616384 |