On invasive rate of Pacific salmon (Oncorhynchus) of the Amur River basin with human parasites

As part of the monitoring of infection of Pacific salmon ( Oncorhynchus ) of the Amur basin with pathogens of human parasitic diseases, the invasiveness of the autumn and summer forms of chum salmon O. keta and pink salmon O. gorbuscha caught during the spawning anadromous migration in 2022–2024 was assessed. As a result of the conducted studies, Nanophyetus schikhobalowi metacercariae were found in chum salmon with an invasion intensity of 61,5%. Larvae of Anisakis simplex were observed in 32,0% of the studied individuals, Dibothriocephalus nihonkaiensis plerocercoids were detected in 14,8% of cases. The studied pink salmon individuals contained A. simplex larvae in 11,4% of cases. The results of the study confirm the need for annual measures to assess the parasitological state of fishery reservoirs in the Khabarovsk Territory to reduce the risk of infection of the population.