Abstract:

Oncomelania hupensis snail is the only intermediate host of Schistosoma japonicum. Blocking the spread of the snails can effectively prevent and control the transmission of schistosomiasis. Based on the survival conditions and migration char? acteristics of the snails in the water，the technology of pumping water at the middle level of water body can effectively prevent the spreading of snails. This paper reviews the current researches on the spreading trend of snails in China，characteristics of snail mi? gration，and the theoretical basis of the technology of pumping water at the middle level of water body as well as its application.

Key words: Schistosomiasis；Oncomelania hupensis snail；Pumping water at the middle level of water body；Engineering model； Spreading control

摘要：

钉螺是日本血吸虫的唯一中间宿主， 阻断钉螺扩散能有效防止血吸虫病传播和流行。基于钉螺在水体中的生存条件和迁移特点，“中层取水” 技术能有效地防止钉螺扩散。本文参考国内相关文献， 从钉螺消长与扩散趋势、 钉螺迁移扩散特点、“中层取水” 理论基础及其应用等方面进行综述。

关键词: 血吸虫病； 钉螺； 中层取水； 工程模式； 控制扩散