中国寄生虫学与寄生虫病杂志 ›› 2002, Vol. 20 ›› Issue (4): 11-231.

• 实验报道 • 上一篇    下一篇

钉螺在水中运动状态的观察

何昌浩;潘昭汉;张爱华;蔡顺德;潘幼勤;邓伟文
  

  1. 华中科技大学同济医学院基础部寄生虫学教研室 武汉430030 (何昌浩);武汉水利电力大学 宜昌443002 (潘昭汉;蔡顺德);湖北省职工医学院 荆州434000 (张爱华);湖北省中医学院附属医院 武汉430030 (潘幼勤);华中科技大学同济医学院基础部寄生虫学教研室 武汉430030(邓伟文)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-08-30 发布日期:2002-08-30

Observation on Moving Patterns of Oncomelania Snails in Rivers and Canals

HE Chang-hao1;PAN Zhao-han2;ZHANG Ai-hua3;CAI Shun-de2;Pan You-qin2;DENG Wei-wen1   

  1. 1. Department of Parasitology of Tongji Medical College;Huazhong Science and Technology University; . 2. Wuhan .{Irrigation.} Works and Electric Power University (Yichang); . 3. Hubei Provincial Employee Medical College; . .{4. Affiliated.} Hospital;Hubei Chinese Traditional Medical College
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-08-30 Published:2002-08-30

摘要:   目的 了解钉螺在水体中的运动状态。 方法 采用钉螺生物学与水力学以及河流泥沙工程学相结合的方法 ,观察钉螺运动状态。 结果与结论 钉螺的爬行能力很低 (最大爬速每分钟仅 2 .98cm) ,其在江河沟渠中的自身运动可忽略不计 ,但在阻 /灭螺工程中设计沉降池时必须考虑钉螺的自身运动。钉螺在江河沟渠水流中的运动状态主要表现为 :1吸附于载体随水漂流 ;2作为悬移质随水流推动移行 ,其主要来自湖沼地区大量有螺洲滩随水流启动的、以及沉降在河床床面上的重新启动的钉螺 ,均为 7周龄以下的幼螺 ,因其吸附力较小而易失散。螺龄较大的野外钉螺平均吸附力为其体重的 13倍 ,不易失散。

关键词: 血吸虫病, 钉螺, 运动状态

Abstract:  Objective To understand the moving patterns of Oncomelania snails, intermediate host of S.japonicum, in the water bodies. . Methods. Based on the biological features of the snails, methods and techniques in relation to hydraulics and silt engineering were adopted to investigate the active scrawl ability and passive movement of the snails. . Results and Conclusion . The scrawl speed of the snails themselves was very low, 2.45 mm per minute only. The active movement in the water current was therefore almost negligible. The major moving patterns of the snails in rivers and canals were that: 1. Snails adsorbed on different kinds of carriers drifted on the water. 2. Snails suspended on the water and drifted with the current, these were the young snails under 7 weeks of age. Adult snail showed a strong ability of adhesion, 12 times higher than its body weight.

Key words: Schistosomiasis, Oncomelania hupensis, moving pattern