Moukrim A, Zekhnini A, Rondelaud D
Laboratoire Eaux et Environnement, Faculté des Sciences, Agadir, Morocco.
Parasitol Res. 1995;81(6):537-9. doi: 10.1007/BF00931799.
A comparative study of the shedding of cercariae of Schistosoma haematobium was performed in Bulinus truncatus and Planorbarius metidjensis individually exposed to 5 miracidia in their first 72 h of life. No significant difference was noted between the mean values of the two snail groups concerning the prepatent period duration (53-57 days at 24 degrees-26 degrees C), the patent period duration (41 days for B. truncatus, 70 days for P. metidjensis), or the total number of cercariae (1,499 per B. truncatus, 1,935 per P. metidjensis). Successive periods of heavy and low production were encountered in the shedding of cercariae; however, the periodicity was identical in the two snail species (25-27 days) and the emergence of cercariae peaked between 11 a.m. and 1 p.m.
对截形水泡螺和梅蒂吉平扁螺分别在其生命的前72小时内暴露于5个毛蚴的情况下，进行了埃及血吸虫尾蚴逸出情况的比较研究。在潜伏期时长（24摄氏度至26摄氏度下为53至57天）、排虫期时长（截形水泡螺为41天，梅蒂吉平扁螺为70天）或尾蚴总数（截形水泡螺每只1499个，梅蒂吉平扁螺每只1935个）方面，两个螺类组的平均值之间未发现显著差异。在尾蚴逸出过程中出现了高产和低产的连续阶段；然而，两种螺类的周期相同（25至27天），且尾蚴逸出高峰出现在上午11点至下午1点之间。
