Population genomics reveals repeated signals of adaptive divergence in the Atlantic salmon of north‐eastern Europe
| Autor: | Craig R. Primmer, Jaakko Lumme, Alexey E. Veselov, Ksenia J. Zueva, Victoria L. Pritchard |
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| Přispěvatelé: | Biosciences, Helsinki Institute of Sustainability Science (HELSUS), Evolution, Conservation, and Genomics, Institute of Biotechnology, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences |
| Rok vydání: | 2020 |
| Předmět: |
SELECTION
0106 biological sciences 0301 basic medicine Atlantic salmon Salmo salar Population DIVERSITY Adaptation Biological Locus (genetics) GENETIC-STRUCTURE Biology Polymorphism Single Nucleotide 010603 evolutionary biology 01 natural sciences Russia Population genomics 03 medical and health sciences SCANS LOCAL ADAPTATION Genetic variation LOCUS Animals 14. Life underwater Selection Genetic allelotyping education Ecology Evolution Behavior and Systematics Local adaptation education.field_of_study Genome IDENTIFICATION RANGE SALAR L Europe Phylogeography 030104 developmental biology Evolutionary biology 1181 Ecology evolutionary biology Genetic structure PATTERNS Microsatellite divergent selection |
| Zdroj: | Journal of Evolutionary Biology. 34:866-878 |
| ISSN: | 1420-9101 1010-061X |
| Popis: | Our ability to examine genetic variation across entire genomes has enabled many studies searching for the genetic basis of local adaptation. These studies have identified numerous loci as candidates for differential local selection; however, relatively few have examined the overlap among candidate loci identified from independent studies of the same species in different geographic areas or evolutionary lineages. We used an allelotyping approach with a 220K SNP array to characterize the population genetic structure of Atlantic salmon in north-eastern Europe and ask whether the same genomic segments emerged as outliers among populations in different geographic regions. Genome-wide data recapitulated the phylogeographic structure previously inferred from mtDNA and microsatellite markers. Independent analyses of three genetically and geographically distinct groups of populations repeatedly inferred the same 17 haploblocks to contain loci under differential local selection. The most strongly supported of these replicated haploblocks had known strong associations with life-history variation or immune response in Atlantic salmon. Our results are consistent with these genomic segments harbouring large-effect loci which have a major role in Atlantic salmon diversification and are ideal targets for validation studies. |
| Databáze: | OpenAIRE |
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