关键词: 体外寄生虫, 群落, 丰富度, 多度

Abstract: Objective:To understand species-abundance distribution of the rodent's ectoparasite communities in Dongling Mountain,Western Beijing.Methods:Wild rodents were captured by snap-traps in three different ecological habitats in the region from June 1998 to May 1999.7 species of rodents,568 individuals were examined for ectoparasites,16 species of flea,3 species of tick,22 species of gamasid mite,and 7 species of chigger mite collected.Results:The species of ectoparasites with individuals below 10 accounted for 58%-88%,the species with middle individuals(11-100) were generally scarce,and a few species with high abundance(>100) could be seen in the ectoparasites communities.Conclusion:Species richness and abundance indices varied significantly in different types of ectoparasite communities among different hosts.