Genome-wide detection of positive and balancing signatures of selection shared by four domesticated rainbow trout populations (Oncorhynchus mykiss).

ABSTRACT:

Background

Evolutionary processes leave footprints along the genome over time. Highly homozygous regions may correspond to positive selection of favorable alleles, while maintenance of heterozygous regions may be due to balancing selection phenomena. We analyzed data from 176 fish from four disconnected domestic rainbow trout populations that were genotyped using a high-density Axiom Trout genotyping 665K single nucleotide polymorphism array, including 20 from the US and 156 from three French lines. Using methods based on runs of homozygosity and extended haplotype homozygosity, we detected signatures of selection in these four populations.

Results

Nine genomic regions that included 253 genes were identified as being under positive selection in all four populations Most were

SUBMITTER: Paul K 

PROVIDER: S-EPMC10882880 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature