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目的了解钉螺对不同终宿主源性日本血吸虫毛蚴的易感性差异。方法收集家兔、水牛和小白鼠排出的虫卵,孵出毛蚴,以毛蚴和钉螺5:1的比例感染同一地钉螺。同时设对照组,观察各组钉螺感染率、死亡率。结果实验组家兔、水牛和小白鼠排出虫卵孵出毛蚴感染钉螺,获得的阳性率分别为1.42%、8.67%和19.87%,钉螺死亡率分别为29.5%、13.5%和24.5%;对照组钉螺阳性率分别为2.63%、2.02%和11.66%,死亡率分别为24.0%、49.5%和18.5%。结论不同宿主源日本血吸虫毛蚴对钉螺易感性存在差异。
Objective To understand the susceptibility of Oncomelania snails to different terminal host-derived Schistosoma japonicum miracidia. Methods The eggs collected from rabbits, buffaloes and mice were collected, and miracidia were hatched. The snails were infected with 5: 1 ratio of miracidia and snails. At the same time set the control group, observe the infection rate of snails in each group, mortality. Results In the experimental group, the eggs were hatched from the eggs, and the positive rates were 1.42%, 8.67% and 19.87% respectively. The mortality rates of Oncomelania snails were 29.5%, 13.5% and 24.5% respectively. The control group The positive rates of snails were 2.63%, 2.02% and 11.66% respectively, with the mortality rates of 24.0%, 49.5% and 18.5% respectively. Conclusion Different hosts have different susceptibilities to Schistosoma japonicum with Schistosoma japonicum.