Phylogeographic mitogenomics of Atlantic cod Gadus morhua: Variation in and among trans-Atlantic, trans-Laurentian, Northern cod, and landlocked fjord populations.

ABSTRACT: The historical phylogeography, biogeography, and ecology of Atlantic cod (Gadus morhua) have been impacted by cyclic Pleistocene glaciations, where drops in sea temperatures led to sequestering of water in ice sheets, emergence of continental shelves, and changes to ocean currents. High-resolution, whole-genome mitogenomic phylogeography can help to elucidate this history. We identified eight major haplogroups among 153 fish from 14 populations by Bayesian, parsimony, and distance methods, including one that extends the species coalescent back to ca. 330 kya. Fish from the Barents and Baltic Seas tend to occur in basal haplogroups versus more recent distribution of fish in the Northwest Atlantic. There was significant differentiation in the majority of trans-Atlantic comparisons (Φ<

SUBMITTER: Lait LA 

PROVIDER: S-EPMC6053584 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature