关键词: 长爪沙鼠, 寄生蚤, 种类, 构成, 季节消长

Abstract: Objective To understand the species,composition and seasonal fluctuation of parasitical fleas of Meriones unguiculatus in Hebei plague natural foci.Methods To collect fleas from living Meriones unguiculatus and its nest.The rats and fleas were placed in the fuming-mouse tank and were fumed to death in aether or petrol exception,and then the fleas were collected.Every hole of Meriones unguiculatus was prospected three times with wrapping-flannel rubber stick for gather parasitical fleas.Then it was identified directly under microscope or made slide sample.Results 16 species 10 genera 3 families of parasitical fleas were discovered from Meriones unguiculatus.The Nosopsyllus laeviceps kuzenkovi was dominant species of the parasitical fleas,and then Citellophilus tesquorum mongolicus,Neopsylla bidentatiformis and Frontopsylla luculenta.The highest flea indices on the body and in the nest were found in March and April.The rates of infected fleas and the flea indices were very different year from year,without obvious regulation.Conclusion It is made clearly that the species,composition and seasonal fluctuation of parasitical fleas ofMeriones unguiculatus in Hebei natural foci.It provided scientific basis for further studying the prevalence factors of rodent plague and natural plague foci in Hebei province.