ArticleEvolutionary applications2021
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon.
Article in Evolutionary applications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Compounding Impacts-Genomic Exploration of the Potential Effect of Domestic Introgression on Climate Adaptation in Atlantic Salmon (Evolutionary applications · 2026Article
- Population Genetics ofEcology and evolution · 2026Article
- No significant change in domestication-admixture during the marine phase of an Atlantic salmon population.Communications biology · 2026Article
- Domestication-Admixed Atlantic Salmon (Salmo salar) Establish a Productive Population in the Wild.Ecology letters · 2026Article
- Modelling the Consequences of Domestication-Introgression in Wild Populations Using Genetic Markers Under Varying Degrees of Selection.Evolutionary applications · 2025Article
- Genetic Recovery of Two Wild Seatrout Populations Following Long-Term Stocking With Non-Native Conspecifics.Molecular ecology · 2025Article
- Introgression of domesticated salmon changes life history and phenology of a wild salmon population.Evolutionary applications · 2022Article
- Introgression from farmed escapees affects the full life cycle of wild Atlantic salmon.Science advances · 2021Article
- Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon.Evolutionary applications · 2021Article
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The viability of wild Atlantic salmon populations is threatened by genetic introgression from escaped farmed salmon. Farmed Atlantic salmon are genetically improved for important commercial traits and a life in captivity but are poorly adapted to the natural environment. The rate of gene flow from escaped farmed to wild salmon depends on their spawning success and on offspring survival at various life stages. We here investigate relative survival of introgressed juvenile Atlantic salmon (parr) in a river in northern Norway. The studied population has experienced genetic introgression from farmed salmon for about four generations (20 years). We followed two cohorts of parr from the year of hatching (0+) to the age of 2 years (2+). Farmed genetic introgression was quantified at the individual level and on a continuous scale using diagnostic SNPs. Population-level genetic introgression decreased from 0+ to 2+ by 64% (2011 cohort) and 37% (2013 cohort). This change was driven by a 70% (2011 cohort) and 49% (2013 cohort) lower survival from age 0+ to 2+ in introgressed parr compared to parr of wild origin. Our observations show that there is natural selection against genetic introgression with a potential cost of lower productivity.
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