关键词: 洞干蚤指数, 达乌尔黄鼠密度, 方形黄鼠蚤蒙古亚种, 年间变动, 多样性

Abstract: According to the fluctuation of population of CiteUus dauricus and its burrow track flea index in Wuningbatu Sumu, Zhengxiangbai Banner, Inner Mongolia Autonomous Region during 1981-1993, the authors have found that there are nine flea species with CiteUophilus tesquorurn mongolicus (66.%) as the most dominant member,and Frontopsylla luculenta (25.0 %) the second. Neopsylla abagaitui and N. bidentati formis are only of common occurrence whereas the other species are rather scare. The correlation between the burrow host population and its burrow track flea index is significant (P<0.03), I. E. , burrow track flea index=0.249170.0596 host population. But the correlation between the burrow track flea index and its infecting flea rate is not signifi-cant (0.05<0.10), and the diversity and evenness of flea species are influenced sig nificantly by the proportion of C. t. mongolicus in the flea population. Furthermore, the relationship between the burrow track flea index and body flea index is significant (P<0.05 ), I. E. , burrow track flea index= 0.27097+0.0504 body flea index, and that between the burrow track flea index and burrow nest flea index is also significant (P<0.07), I.E. , burrow track flea index=0.276570.0035 burrow nest flea index. Finally, the correlation among the three kinds of flea index is approximately as following: (burrow nest flea index): (body flea index): (burrow track flea index) =100'10:1.