云南老君山蚤类的垂直分布

1980年作者在云南省老君山进行鼠类调查时,亦对蚤类的垂直分布进行了研究。结果说明,随着海拔高度、植被等自然环境及宿主垂直地带性的变化,蚤类的种类、数量比重及指数,以及各个种在四个垂直带中的数量等均有显著变化,其垂直分布的地带性,主要是受宿主分布的限制,少数则受自然地理屏障的限制。

The Vertical distribution of Fleas of Laojun Mountain Yunnan

A survey of the Vertical distribution of Fleas was undertaken in June to August, 1980 at Laojun Mountain, Yunnan. The topography was divided into four vertical zones, as 2,500-3,000m., 3,000-3,500m., 3,500-4,000m., and 4,000-4,347m. eacb.The resaults are shown as tab and fig:1. Altogether 1,973 fleas of 22 species were obtained, which belong to four families and twelve genera. Among which, Geusibia yunnanensis Xie et Gong, 1982 and Palaeopsylla yunnanensis Xie et Yang, 1982 were described as new to science. The dominant species in this collection were Ctenophthalmus quadratus Liu et Wu, 1960, C. yunnanus Jordan, 1932, Frontopsylla diqingensis Li et Hsieh (Xie), 1974 and Neopsylla specialit speciolis Jordan, 1932.2. The species makeup, number and indeces of the fleas varied as the natural conditions, such ar the altitude, flora as well as the vertical distribution of their hosts. The diferences were significant.3. The zonal differences of the vertical distribution of the fleas are dependent on the distributtion of their hosts. And on the other hand, the dispersal of fleas may be limited by the physiogeographical barriers, e. g. the altitude, climatic factors, humidity, temperature etc., bacause the developmental stages of the hosts require suitable conditions which are directly influenced by the environmental factors.