黄鼠巢蚤和宿主密度的年间动态关系

THE YEARLY DYNAMICS RELATIONSHIP BETWEEN BURROW NEST FLEA INDEX AND POPULATION OF CITELLUS DAURICUS

根据内蒙古自治区正镶白旗乌宁巴图苏木１９８１～１９９３年达乌尔黄鼠Ｃｉｔｅｌｕｓｄａｕｒｉ－ｃｕｓ密度和巢蚤指数监测资料进行分析，得到如下结果。共检巢蚤１０种，其中方形黄鼠蚤蒙古亚种Ｃｉｔｅｌｏｐｈｉｌｕｓｔｅｓｑｕｏｒｕｍｍｏｎｇｏｌｉｃｕｓ（４５．４％）为优势蚤种，光亮额蚤Ｆｒｏｎｔｏｐｓｙｌａｌｕｃｕ－ｌｅｎｔａ（２５．０％）和阿巴盖新蚤Ｎｅｏｐｓｙｌａａｂａｇａｉｔｕｉ（２１．３％）为次优势蚤种。二齿新蚤Ｎ．ｂｉｄｅｎ－ｔａｔｉｆｏｒｍｉｓ和角尖眼蚤Ｏｐｈｔｈａｌｍｏｐｓｙｌａｐｒａｅｆｅｃｔａ为常见种，余为少见种。鼠密度与巢蚤指数的关系不显著（Ｐ＞０．１０）、与巢染蚤率关系显著（Ｐ＜０．０５），不同年份的蚤类多样性和均匀性比较稳定。巢蚤和体蚤指数的关系是显著的（Ｐ＜０．０２），关系为巢蚤指数＝４．０８４９＋８．７４８３（体蚤指数）。巢蚤指数的均值是体蚤指数的９．７４倍且差异显著（Ｐ＜０．００５）。

According to the fluctuation of population of Citellus dauricus and its nest flea index in Wuningbatu Sumu,Zhengxiangbai Banner,Inner Mongolia Autonomous Region during 1981～1993,the authors have found that there are ten flea species with Citellophilus tesquorum mongolicus (454%) as the most dominant member,Frontopsylla luculenta (250%) the second and Neopsylla abagaitui(213%) the third.N.bidentatiformis and Ophthalmopsylla praefecta are only of common occurrence whereas other species are rather scarce. The correlation between the host population and its burrow nest flea index is not significant (P>010).But the correlation between the host population and the flea infection rate of its burrow nest is significant(P<005).The diversity and evenness of flea species seem stable in different years.Furthermore,the correlation between the body flea index and burrow nest flea index is significant (P<002), i.e., burrow flea index=40849+87483 body flea index. The mean value of the burrow flea index is 974 times as high as that of the body flea index,and the difference between them is significant(P<0005).