Geographic extent of introgression in Sebastes mentella and its effect on genetic population structure.

ABSTRACT: Genetic population structure is often used to identify management units in exploited species, but the extent of genetic differentiation may be inflated by geographic variation in the level of hybridization between species. We identify the genetic population structure of Sebastes mentella and investigate possible introgression within the genus by analyzing 13 microsatellites in 2,562 redfish specimens sampled throughout the North Atlantic. The data support an historical divergence between the "shallow" and "deep" groups, beyond the Irminger Sea where they were described previously. A third group, "slope," has an extended distribution on the East Greenland Shelf, in addition to earlier findings on the Icelandic slope. Furthermore, S. mentella from the Northeast Arctic an

SUBMITTER: Saha A 

PROVIDER: S-EPMC5192944 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature