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目的 :探讨蚤类自然种群的性比。方法 :在对云南省人间鼠疫流行区室内及室外农耕区进行现场抽样调查的基础上 ,常规分类鉴定所获的小兽宿主及其体表寄生蚤。选择采集数量较大的蚤种作为重点对象 ,进行雌雄蚤性比分析。结果 :在流行区12个县(市)的抽样调查中 ,从37种5114只小兽体表检获蚤类27种4288只 ,其中有8种蚤的采集数量较大 ,占总采集蚤数的95 48 %。8种主要蚤种中 ,除偏远古蚤的雄性个体比例(52 32 %)略高于雌性个体比例(47 68 %)外 ,其余7种蚤的雌性个体比例(54 41 %～66 36 %)均高于相应的雄性个体比例(33 64 %～45 59 %) ,雌∶雄比为1∶0 51～1∶0 84。结论 :云南省人间鼠疫流行区蚤类群落中主要蚤种的雌性比例略高于雄性比例
Objective: To investigate the sex ratio of natural populations of fleas. Methods: On the basis of field sampling in indoor and outdoor farming areas of epidemic area of human plague in Yunnan Province, small mammal hosts and their surface parasitic fleas were obtained by routine classification and identification. Select flea species collected larger number as the focus of the object, male and female flea sex ratio analysis. Results: In the sample survey of 12 counties (cities) in the endemic areas, 27 species and 4288 fleas were detected from 37 kinds of 5114 small mammals. Among them, 8 kinds of fleas were collected in larger numbers, accounting for the total number of fleas collected 95 48%. Among the eight main flea species, the proportion of females (54 41% -66 36%) in the remaining seven fleas was slightly higher than that of the females (52 32%) but slightly higher than that of the females (47 68%) Were higher than the corresponding male individual proportion (33 64% ~ 45 59%), female: male ratio of 1:051 ~ 1:084. Conclusion: The female proportion of the main flea species in the flea community in Yunnan Plague prevalence area is slightly higher than that of the male