关键词: 大绒鼠, 群落, 蚤类, 云南

Abstract: Objective To investigate the community structure of fleas on Eothenomys miletus, together with the distribution of species-abundance and the relation of species-plots. Methods 19 counties (towns) in Yunnan province of China were selected as investigation spots. Flea specimens were collected from the body surface of every rodent. Every flea was finally identified into species under a microscope. All the fleas on Eothenomys miletus were defined as one community unit. Richness(S), Shannon-Wiener's diversity index(H′), evenness(J′) and dominance index(C′) were adopted to measure the community structure of fleas. Results 2248 fleas were collected from the body surface of 1295 rodents (Eothenomys miletus). All the fleas were identified as 10 species belong to 7 genera of 3 families. Of 10 flea species, 2 main flea species accounts for 96.66% of the total specimens. The distribution of species-abundance shows that there are 3 species with only one individual and the individuals of 2, 4, 5, 16, 45, 121 and 2052 correspond to only one species in the flea community. The species-plot relationship shows that flea species increase with the increase of mouse plots(samples). Conclusion Eothenomys miletus can host several species of fleas, but most flea species are rare ones and they have not established a stable parasitic relationship with their host. Few flea species are dominant ones with abundant individuals.