[Population density of Ixodes persulcatus ticks (Ixodidae) in the western Sikhote-Alin]

The paper presents data on the population density of active ticks in different landscape zones of West Sykhote-Alyn as well as the material on the absolute abundance of ticks in four experimental 400 m2 areas. The abundance of active Ixodes persulcatus and Haemaphysalis japonica on vegetation at the peak of their activity was found to amount to half of all hibernated adult ticks.