Genomic variation underlying complex life-history traits revealed by genome sequencing in Chinook salmon.

ABSTRACT: A broad portfolio of phenotypic diversity in natural organisms can buffer against exploitation and increase species persistence in disturbed ecosystems. The study of genomic variation that accounts for ecological and evolutionary adaptation can represent a powerful approach to extend understanding of phenotypic variation in nature. Here we present a chromosome-level reference genome assembly for Chinook salmon (Oncorhynchus tshawytscha; 2.36 Gb) that enabled association mapping of life-history variation and phenotypic traits for this species. Whole-genome re-sequencing of populations with distinct life-history traits provided evidence that divergent selection was extensive throughout the genome within and among phylogenetic lineages, indicating that a broad portfolio of phenotypic d

SUBMITTER: Narum SR 

PROVIDER: S-EPMC6083255 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature