Hierarchical genetic structure in an evolving species complex: Insights from genome wide ddRAD data in Sebastes mentella.

ABSTRACT: The diverse biology and ecology of marine organisms may lead to complex patterns of intraspecific diversity for both neutral and adaptive genetic variation. Sebastes mentella displays a particular life-history as livebearers, for which existence of multiple ecotypes has been suspected to complicate the genetic population structure of the species. Double digest restriction-site associated DNA was used to investigate genetic population structure in S. mentella and to scan for evidence of selection. In total, 42,288 SNPs were detected in 277 fish, and 1,943 neutral and 97 tentatively adaptive loci were selected following stringent filtration. Unprecedented levels of genetic differentiation were found among the previously defined 'shallow pelagic', 'deep pelagic' and 'demersal slope' ecotypes,

SUBMITTER: Saha A 

PROVIDER: S-EPMC8158871 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature