Allele surfing causes maladaptation in a Pacific salmon of conservation concern.

ABSTRACT: How various factors, including demography, recombination or genome duplication, may impact the efficacy of natural selection and the burden of deleterious mutations, is a central question in evolutionary biology and genetics. In this study, we show that key evolutionary processes, including variations in i) effective population size (Ne) ii) recombination rates and iii) chromosome inheritance, have influenced the genetic load and efficacy of selection in Coho salmon (Oncorhynchus kisutch), a widely distributed salmonid species on the west coast of North America. Using whole genome resequencing data from 14 populations at different migratory distances from their southern glacial refugium, we found evidence supporting gene surfing, wherein reduced Ne at the postglacial recolonization front,

SUBMITTER: Rougemont Q 

PROVIDER: S-EPMC10545117 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature