Oceanographic connectivity and environmental correlates of genetic structuring in Atlantic herring in the Baltic Sea.

ABSTRACT: Marine fish often show little genetic structuring in neutral marker genes, and Atlantic herring (Clupea harengus) in the Baltic Sea are no exception; historically, very low levels of population differentiation (F ST ≍ 0.002) have been found, despite a high degree of interpopulation environmental heterogeneity in salinity and temperature. Recent exome sequencing and SNP studies have however shown that many loci are under selection in this system. Here, we combined population genetic analyses of a large number of transcriptome-derived microsatellite markers with oceanographic modelling to investigate genetic differentiation and connectivity in Atlantic herring at a relatively fine scale within the Baltic Sea. We found evidence for weak but robust and significant genetic structuring (F ST = 0

SUBMITTER: Teacher AG 

PROVIDER: S-EPMC3673481 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature