[Lice (Anoplura) of small mammals in the Volga-Kama Preserve]

18 068 small mammals belonging to 15 species were examined, 25 059 lice of 7 species (Hoplopleura acanthopus, H. edentula, H. affinis, H. longula, Polyplax serrata, P. borealis, Neohaematopinus laeviusculus) were collected from 2355 animals of 14 species. Information is given on the species composition, occurrence and abundance for lice on shrews and rodents. 50 per cent of collected animals belong to Clethrionomys glareolus and about 85 per cent of lice--to Hoplopleura edentula. Frequent cases were recorded of the occurrence of lice on non-typical hosts as a result of interspecific contacts of animals. H. edentula was more often than other species found on non-typical hosts. No specific lice were reported from shrews and some rodents, only vole lice were found. Seasonal and age changes in lice infection rate of mass rodents as well as infection rate in years of greater and lesser abundance of C. glareolus have been studied.