Adaptive divergence in marine fishes; genomic signatures with implications for fisheries management
Friday seminar by Jakob Hemmer Hansen
In marine fishes, population structure has often been found to be very shallow across large geographical regions, most likely due to high levels of gene flow and large effective population sizes in these species. However, new studies applying genomic approaches have also shown that population structure may be highly heterogeneous across the genome. Localized genomic regions of high divergence potentially reflect adaptation to local environmental conditions, and may therefore provide important information about scales of spatial structuring in the species. These data provide general information for assigning management units as well as specific and highly powerful tools for determining the population of origin of individual fish. Focusing on Atlantic cod, I will discuss the integration of new knowledge about population structure in marine fisheries management.
Jakob Hemmer Hansen
DTU Aqua – National Institute of Aquatic Resources
The Technical University of Denmark (DTU)