不同地域品系的日本血吸虫对钉螺5个亚种有不同程度的感染力。作者深入观察了台湾品系的日本血吸虫对实验室饲养的湖北钉螺5个亚种的感染性。5个实验所用钉螺分别为带病亚种、湖北亚种、夸氏亚种、台湾亚种和邱氏亚种。由于成螺比幼螺易感,因此用于研究的螺全为成螺。台湾品系的日本血吸虫从彰化地区感染螺中获得,在实验室用湖北钉螺台湾亚种及小鼠维持生活史。每个螺在分别有1,3,5条毛蚴小试管中置放 Schistosoma japonicum in different regions had different degrees of infectivity to 5 subspecies of Oncomelania snails. In-depth observation of the Taiwan strains of Schistosoma japonicum laboratory-cultured in Hubei snails five subspecies infectivity. The five snails used in the experiment were subspecies, Hubei subspecies, Quintiles subspecies, Taiwan subspecies and Qiu subspecies. As the snail than the young snail susceptible, so the study for the snail all into snails. Taiwan strains of Schistosoma japonicum from Changhua infection snail obtained in the laboratory using the snail Taiwan subspecies and mice to maintain life history. Each snail was placed in a small test tube of 1, 3, 5, respectively