Disentangling structural genomic and behavioural barriers in a sea of connectivity.

ABSTRACT: Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an important mechanism maintaining isolating barriers, yet their role in sympatric populations and divergence with gene flow is not entirely understood. Here, we revisit the question of whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod (Gadus morhua), by exploring a unique data set combining whole-genome sequencing data and behavioural data obtained with acoustic telemetry. Within a confined fjord environment, we find three geneti

SUBMITTER: Barth JMI 

PROVIDER: S-EPMC6518941 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature