Population and seascape genomics of a critically endangered benthic elasmobranch, the blue skate Dipturus batis.

ABSTRACT: The blue skate (Dipturus batis) has a patchy distribution across the North-East Atlantic Ocean, largely restricted to occidental seas around the British Isles following fisheries-induced population declines and extirpations. The viability of remnant populations remains uncertain and could be impacted by continued fishing and by-catch pressure, and the projected impacts of climate change. We genotyped 503 samples of D. batis, obtained opportunistically from the widest available geographic range, across 6 350 single nucleotide polymorphisms (SNPs) using a reduced-representation sequencing approach. Genotypes were used to assess the species' contemporary population structure, estimate effective population sizes and identify putative signals of selection in relation to environmen

SUBMITTER: Delaval A 

PROVIDER: S-EPMC8792474 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature