Infestation of walleye pollock with the parasitic copepod Haemobaphes diceraus Wilson, 1917 (Copepoda: Pennellidae) in waters of Sakhalin and the Kuril Islands

The infestation of walleye pollock with a parasitic copepod Haemobaphes diceraus at the coasts of Sakhalin and the Kuril Islands was studied during the spring of 2008. The extensiveness of the infestation in Pacific waters of the northern Kurils was 1.85–1.97%. In the southern Kurils it was from 2.0% (northeast of Iturup Island) to 7.41% (Prostor Bay), in the Tatar Strait it was 1.61%, and off northern Sakhalin Island it was 0.46%.