由于新药和新的诊断技术的出现,控制血吸虫病的重点已从控制螺类转到治疗患者。然而,化疗并不能防止再感染,仍须降低螺的密度。已证明用灭螺药杀螺无效、昂贵,且对环境造成不良影响。迄今,人们对血吸虫中间宿主的天敌与寄生物知之甚少,而它们可能成为螺的生物防制工具。目前,已从引进竞争性螺种的实验研究中获得了满意的 Due to the emergence of new drugs and new diagnostic techniques, the focus of controlling schistosomiasis has shifted from control to treatment of patients. However, chemotherapy does not prevent re-infection and still has to reduce the density of snails. It has been shown that molluscicides are ineffective, costly and have an adverse effect on the environment. To date, little has been known about the natural enemies and parasites of the intermediate host of schistosomiasis, and they may become biological control tools for snails. At present, it has been satisfied with the experimental research on the introduction of competitive species