Ecological factors and morphological traits are associated with repeated genomic differentiation between lake and stream stickleback.

ABSTRACT: The repeated evolution of similar phenotypes in independent populations (i.e. parallel or convergent evolution) provides an opportunity to identify genetic and ecological factors that influence the process of adaptation. Threespine stickleback fish ( Gasterosteus aculeatus) are an excellent model for such studies, as they have repeatedly adapted to divergent habitats across the Northern hemisphere. Here, we use genomic, ecological and morphological data from 16 independent pairs of stickleback populations adapted to divergent lake and stream habitats. We combine a population genomic approach to identify regions of the genome that are likely under selection in these divergent habitats with an association mapping approach to identify regions of the genome that underlie variation in ecologica

SUBMITTER: Rennison DJ 

PROVIDER: S-EPMC6560272 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature