Genome-wide SNPs reveal divergence within the S. mentella complex ...

• Main Authors: Saha, Atal, Kent, Matthew, Hauser, Lorenz, Planque, Benjamin, Westgaard, Jon-Ivar, Cadrin, Steve, Johansen, Torild
• Format: Conference Object
• Language: unknown
• Published: ASC 2015 - Theme session I 2024
• Subjects: Technologies and data; Pressures, impacts, conservation, and management; Faroe Islands; Irminger Sea; Northeast Atlantic
• Online Access: https://dx.doi.org/10.17895/ices.pub.25682397; https://ices-library.figshare.com/articles/conference_contribution/Genome-wide_SNPs_reveal_divergence_within_the_S_mentella_complex/25682397

No abstracts are to be cited without prior reference to the author.Sebastes mentella (beaked redfish) represents the most commercially important species in the genus across the Northeast Atlantic. Despite increased research effort to reveal genetic structuring within the species, questions remain on precise boundaries among populations. A genome-wide survey of single nucleotide polymorphisms (SNPs) using double digested-RAD (ddRAD) sequencing revealed 2537 SNP markers, which were used to study genomic divergence within the beaked redfish. Our data suggest three genetic clusters corresponding to the ‘shallow pelagic’, and ‘deep pelagic’ morphs in addition to a ‘slope’ component. The significant neutral genomic differentiation (FST = 0.04) implies high extent of reproductive isolation between the two morphs, whereas the substantial differentiation (FST = 0.44) at 13 outlier loci may suggest adaptive radiation in S. mentella. Within the ‘deep’ group, the samples from the Faroe Islands and Irminger Sea were ...