浙江省开化县放逸短沟蜷螺带菌状态的调查研究

目的]了解浙江省开化县放逸短沟蜷螺的带菌状态。方法]从开化县龙山溪溪流中采集放逸短沟蜷螺样本。进行细菌培养及鉴定，观察放逸短沟蜷螺中并殖吸虫尾蚴的感染情况。结果]放养过放逸短沟蜷螺的水标本中菌落数量大于2000个／ml，呈密集状态，细菌呈长椭圆形或长杆状。未发现放逸短沟螺蛳活组织存在并殖吸虫尾蚴感染。结论]开化放逸短沟蜷螺带菌状态严重，应注意防止饮用水污染。

Investigation on the Bacteria Infection Situations of Semisulcospira libertine in Kaihua County of Zhejiang Province

Objective] The research aimed to investigate the bacteria infection situations in Semisulcospira libartina in Kaihua CQunty of Zbe- jiang Province. Method] The samples of S. libertina were collected from the river of Longsban ravine stream in Kaihua County to make bacterial culture and identification. The infection situations of Paragonimus fukienensis in S. libertine were observed. Result] The colony quantity in wa- ter samples in which S. libertine were cultured was over 2 000 ind./ml, showing in dense state. The bacteria were long elliptic type or long rod type. The infection of P. fuk/enens/s was not found in live tissues of S. libertine. Conclusion ] The bacterial infection situations of S. libertine was serious, so some effective measures should be taken for avoiding to drinking water pollution caused by bacteria.