Data from: Population genomics and history of speciation reveal fishery management gaps in two related redfish species (Sebastes mentella and Sebastes fasciatus) ...

• Main Author: Benestan, Laura
• Format: Dataset
• Language: English
• Published: Dryad 2020
• Subjects: Canada; Northwest Atlantic; Sebastes mentella
• Online Access: https://dx.doi.org/10.5061/dryad.w0vt4b8n7; https://datadryad.org/stash/dataset/doi:10.5061/dryad.w0vt4b8n7

Understanding the processes shaping population structure and reproductive isolation of marine organisms can improve their management and conservation. Using genomic markers combined with estimation of individual ancestries, assignment tests, spatial ecology, and demographic modelling, we (i) characterized the contemporary population structure, (ii) assessed the influence of space, fishing depth and sampling years on contemporary distribution, and (iii) reconstructed the speciation history of two cryptic redfish species, Sebastes mentella and S. fasciatus. We genotyped 860 individuals in the Northwest Atlantic Ocean using 24,603 filtered single nucleotide polymorphisms (SNPs). Our results confirmed the clear genetic distinctiveness of the two species, and identified three ecotypes within S. mentella and five populations in S. fasciatus. Multivariate analyses highlighted the influence of spatial distribution and depth on the overall genomic variation while demographic modeling revealed that secondary contact ... : Samples collected by the Department of Fishery and Ocean Canada. RAD-sequencing libraries prepared in Université LAVAL. ...