Seasonal distribution and migrations of Pacific cod Gadus macrocephalus (Gadidae) in the northwestern part of the Sea of Japan and adjacent water areas

On the basis of materials collected in 32 expeditions in the northwestern part of the Sea of Japan from 1984 to 2009, seasonal and interannual dynamics of biomass of Pacific cod Gadus macrocephalus stock was analyzed. Seasonal variation of spatial and bathymetric distributions of this species is considered. The conclusion of the existence of seasonal migrations of cod along the continental coast is substantiated.