摘要
为探讨日本血吸虫(Schistosoma japonicum)毛蚴对不同密度、不同距离湖北钉螺(Oncomelania hupensis)易感性,在现场环境下,采用20 000条新鲜孵化出的日本血吸虫毛蚴分别感染1、2、3、5 m处的湖北钉螺,每处钉螺分为5、10、50、100只/袋4个密度组,感染4 h后带回实验室饲养,8周后解剖观察钉螺感染情况。结果发现,距离1、2、3、5 m,密度5、10、50、100只/袋4个组钉螺感染率分别为7.06%、4.35%、2.47%和1.23%;4.55%、4.44%、4.11%和2.27%;2.62%、1.58%、1.29%和1.1%;2.36%、4.04%、2.73%和1.5%。研究表明,钉螺感染概率与距毛蚴投放的距离成反比;但是,未得出钉螺感染率与钉螺密度之间的线性关系。
To investigate the susceptibility of Oncomelania snails at different densities and to miracidium of Schistosomajaponicum, snails at 1, 2, 3 and 5 m, each with densities of 5, 10, 50 and 100 per package were infected with 20 000 freshly hatched miracidia in the field, and transferred to laboratory 4 h post-infection. All snails were dissected for infection eight weeks later. At sites of 1, 2, 3 and 5 m, the infection rates of snails were 7.06%, 4.35%, 2.47% and 1.23%, 4.55%, 4.44%, 4.11% and 2.27%, 2.62%, 1.58%, 1.29% and 1.1%, 2.36%, 4.04%, 2.73% and 1.5%, respectively for snail densities of 5, 10, 50 and 100 per package. It is indicated that the infection rates of snails are inversely proportional to the distances from the miracidium-disposal sites, but no linear relation between snail infection rate and snail density.
出处
《海洋科学》
CAS
CSCD
北大核心
2011年第10期64-68,共5页
Marine Sciences
基金
国家自然科学基金(81071379)
国家科技支撑计划(2009BAI78B06)
江苏省卫生厅项目(200701
200901)
作者简介
作者简介：汪伟（1982-），男，安徽无为人，助理研究员，主要从事血吸虫病防治和抗血吸虫药物研究，E-mail：wangweijipd@yahoo．com．cn；
梁幼生，通信作者，0510-68781003，E-mail：liangys58@yahoo．com．cn.
