Frandsen F, Madsen H
Acta Trop. 1979 Mar;36(1):67-84.
Biological control of schistosomiasis by means of introduction of the north American planorbid snail, Helisoma duryi, as a competitor of the intermediate host snails has been proposed. The systematics of the genus Helisoma and the geographic distribution of the different species is described. Papers dealing with laboratory experiments or field observations on the competition between H. duryi and different intermediate host snails have been reviewed. The status of H. duryi as intermediate host of trematodes has been evaluated by searching the literature for all the trematode species that are recorded from the genus Helisoma. The list does not include trematodes of medical or veterinary importance and despite many attempts it has not been possible to infect H. duryi with Schistosoma mansoni and S. haematobium. Finally this paper makes a few comments on the experiments that should be performed in the laboratory, under semifield conditions and and field conditions before H. duryi should be actively dispersed in Africa. The aspects to be considered include the nature of the competitive interactions, the relation between H. duryi and different medical and veterinary important trematodes and the effect of H. duryi on the biotope.
有人提议通过引入北美扁卷螺（Helisoma duryi）作为中间宿主螺类的竞争者来进行血吸虫病的生物防治。本文描述了扁卷螺属的分类学以及不同物种的地理分布。综述了关于Helisoma duryi与不同中间宿主螺类之间竞争的实验室实验或实地观察的相关论文。通过检索文献中记录在扁卷螺属的所有吸虫种类，评估了Helisoma duryi作为吸虫中间宿主的地位。该列表不包括具有医学或兽医学重要性的吸虫，并且尽管进行了多次尝试，但仍无法用曼氏血吸虫和埃及血吸虫感染Helisoma duryi。最后，本文对在非洲积极散布Helisoma duryi之前应在实验室、半野外条件和野外条件下进行的实验提出了一些意见。需要考虑的方面包括竞争相互作用的性质、Helisoma duryi与不同医学和兽医学重要吸虫之间的关系以及Helisoma duryi对生物群落的影响。
