目的：为了探讨钉螺孳生地微环境理化因素对钉螺分布的影响。
Objective: to explore the impacts of the microenvironment physical chemical factors of snail habitat on the snails distribution.
目的探讨退田还湖前后集成垸试点植被类型的变化及植被类型与钉螺孳生地活螺密度之间的关系。
Objective to clarify the change of vegetation types and its relationship between the density of alive-snails in the areas of "breaking dikes or opening sluice for water store" in Jicheng.
目的 探讨湖北钉螺种群内的遗传变异及其程度。
Objective To explore the degree of genetic diversity among populations of Oncomelania hupensis.
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