锡林郭勒草原布氏田鼠体蚤和巢蚤数量动态及蚤类群落演替

1989～1998年对内蒙古阿巴嘎旗那仁宝力格苏木布氏田鼠Microtus brandti体蚤和巢蚤的数量进行了调查和分析,所得体蚤包括3科7属9种, 其中优势种有: 原双蚤田野亚种Amphipsylla primaris mitis占41.84%, 近代新蚤东方亚种Neopsylla pleskei orientalis占41.18%, 光亮额蚤Frontopsylla luculenta占13.18%。所得巢蚤包括2科6属9种, 其中优势种近代新蚤占74.94%; 光亮额蚤占10.04%, 原双蚤占8.20%, 宽圆纤蚤Rhadinopsylla rothschildi占6.44%, 是常见种。田鼠体的原双蚤、近代新蚤、光亮额蚤和体蚤指数间呈正相关(P<0.05)。田鼠巢的近代新蚤、光亮额蚤、宽圆纤蚤和巢蚤指数间正相关显著(P<0.01)。春季巢蚤指数∶春季体蚤指数≈5∶1, 秋季巢蚤指数∶秋季体蚤指数≈75∶1。近代新蚤既是体型蚤又是巢型蚤, 为田鼠的优势蚤种; 原双蚤数量占体蚤的 41.84%, 是体型蚤; 光亮额蚤为体蚤和巢蚤中的常见种。

Studies on dynamics of body and burrow fleas of Microtus brandti and succession of their community

An investigation on body and burrow fleas of the Brandt's vole, Microtus brandti, in Narenbaolige Sumu, Abaga Banner, Inner Mongolia, during 1989～1998 was summarized. Nine flea species in 7 genera in 3 families were found on the vole body with Amphipsylla primaris mitis as the dominant species(41.8%),followed by Neopsylla pleskei orientalis (41.2%) and Frontopsylla luculenta (13.2%). Nine flea species in 6 genera of two families were detected in the vole burrow nest with N. p. orientalis as the dominant species (74.9%). F. luculenta (10.0%), A. p. mitis(8.2%) and Rhadinopsylla rothschildi (6.4%) were commonly occurring. There was a positive correlation between the index of A. p. mitis, N. p. orientalis and F. luculenta and that of all the fleas on the vole body (P<0.05), respectively. The correlation coefficient between index of N. p.orientalis, F. luculenta and R.rothschildi and that of the total fleas in the vole burrow nest was significant (P<0.01), respectively. The proportion of burrow flea index to that of body flea was about 5∶1 in spring while it approached 75∶1 in autumn. N. p.orientalis was the dominant species either in the vole body fleas or in the nest ones. Of the vole body fleas 41.8% was A. p. mitis, which belonged to the body type flea. F.luculenta was common flea species on the vole body and in its burrow.