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.

摘要： 目的 了解大绒鼠体表寄生蚤类群落结构特点、蚤类的种-多度及种-样方关系。方法 定义大绒鼠体表的所有寄生蚤类为一个群落,运用生态学中相对优势度、优势指数、多样性指数和均匀度等方法进行测定。结果 从1295只大绒鼠体表采获蚤类2248匹,隶属3科7属10种,方叶栉眼蚤和特新蚤是优势种,占获蚤总数的96.66%。群落种-多度分布显示:有1个个体的蚤类种数有3种,而有2、4、5、16、45、121、2052个个体的蚤类分别有1种。种-样方显示蚤类种数随着宿主数的增加而增加,在所捕获的1295只大绒鼠(样方)范围内还显示出继续增加的趋势。结论 大绒鼠体表寄生有多种蚤类,但多数蚤类是稀有种,而个体数量很大的优势种是极少数。

关键词: 大绒鼠, 群落, 蚤类, 云南