【摘要】 从动物地理学来说,甘肃省大部分地区属于古北界,仅有南部一小部分地区属东洋界。根据哺乳动物和鸟类及其体外寄生蚤的区系分布,全省由华北区、蒙新区、青藏区和华中区等四个区构成,因而蚤类纽成相当复杂,而且种类繁多,约占我国蚤种的三分之一。截止目前,本省共发现141个种和亚种,隶属于43属、7科。其中103种属于古北界(占本省已知蚤种的73.05%),12种属于东洋界(8.51%),19种为上述两界兼有(13.48%),7种为全世界分布或广布(4.96%).上述特征基本符合1979年中国科学院出版的《中国自然地理》一书中的动物地理区划系统,除陇南山地位于东洋界外,本省其余广大地区都属古北界。 在本文中,将甘肃省划为五个动物地理省:河西走郎,祁连山地,黄土高原,甘南高原草原和陇南山地区,根据蚤类在这些地区的分布、宿土等列表予以说明。 蚤类的组成及区系分布主要决定于它们的宿主动物(哺乳类和鸟类),而后者的动物地理分布又依次取决于植被、气候、景观及其他地理因素如纬度、海拔高度等。更多还原

【Abstract】 Zoogeographically speaking, Gansu province is situated in an area where most of the land belongs to the Palaearctic Region and only a small southern part lies in the Oriental Region.In accordance with the faunal distribution of mammals and birds as well as their ectoparasitic fleas the whole province comprises four districts,e.g.the North-china district, Mongolian-xinjiang district, Qinghai-Tibetan district and Cental-china district. Thus, the composition of the fleas is quite complicated and there are numerous species of the flea which account for about one-third of species of the fleas of China. Species and subspecies of fleas are found so far in the province,belonging to 43 genera and 7 families. Among these fleas,103 forms are Palaearctic (which account for 73.05% of the known fleas of the province), 12 are Oriental (8.51%), 19 belong to the two regions mentioned above(13.48%) and 7 are cosmopolitan or widespread (4.96%) The characteristics discussed above correspond essentially with the zoogeographical division system published in "The chinese Physical Geography" by The Academy of sciences of China in 1979. Except the mountainous areas of South Gansu which are located the Oriental Region, the other vast area belongs to the Palaearctic Region. In the present paper, Gansu province is traditionally divided into 5 faunal subdistricts,namely,the Corridor West of Huang River subdistrict, the Qilian Mountain Range subdistrict, the Loess Plateau subdistrict, the Gannan Plateau Steppe subdistrict and the Southern Gansu Mountainous subdistrict. A list of fleas according to their distributon in the subdistricts with hosts is tabulated.The composition and the faunal distribution of fleas are chiefly determined by their host animals (mammals and birds) and the zoogeographical distribution of the latter is in turn determined by vegetation climate and landscape as well as other geographical factors such as latitude and elevation.更多还原