作者单位:Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01, Koice, Slovak Republic[1]Mammal Research Institute, Polish Academy of Sciences, Waszkiewicza 1, 17-230, Biaowiea, Poland[2]W. Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818, Warsaw, Poland[3]