[Gamasid ticks of small mammals in the Charskaya Basin (Gamasoidea)].

Zooparasitological investigation of small mammals (17 species) was carried out in one of the regions of construction of the Baikal-Amur main line, Charskaya hollow. 8475 gamasid mites belonging to 8 families and represented by 25 species were collected. In addition, in the nests of the northern redbacked vole and root vole there were found gamasid mites belonging to 6 families. The mass species, Haemogamasus ambulans Thorell and Hirstionyssus isabellinus Oud., were recorded from all landscape zones, of the territory under investigation.