Identification of genome-wide patterns of divergence provides insight on how genomes are
influenced by selection and can reveal the potential for local adaptation in spatially
structured populations. In Atlantic cod–historically a major marine resource–Northeast-Arctic-
and Norwegian coastal cod are recognized by fundamental differences in migratory and non-
migratory behavior, respectively. However, the genomic architecture underlying such
behavioral ecotypes is unclear. Here, we have analyzed more than 8.000 polymorphic SNPs …