Formation of genetic diversity in populations of pacific cod (Gadus macrocephalus Tilesius) (Gadidae)

The variability of the Gmo3, Gmo34, Gmo35, Pgmo32, Gmo19 microsatellite DNA loci was examined in the population samples of Pacific cod from different parts of the North Pacific Ocean. The statistical tests showed that the differentiation of the population was the result of different levels of reproductive autonomy of the individual Pacific cod populations, formed in the Pleistocene-Holocene period with the specific features of transgressions and regressions of the World Ocean, and supported by the existing system of currents and the features of the migratory behavior of cod in North Pacific.