报道鸭盲肠杯叶吸虫的生活史，证实纹沼螺 Paraf ossarulus striatulus 和泥鳅 Misgurnus auguillicaudatus 是该吸虫的第一、二中间宿主。虫卵在20～28℃和适当光照条件下21 d 孵出毛蚴；毛蚴侵入纹沼螺后发育为胞蚴和尾蚴，并从62 d 开始自螺体向外逸出尾蚴；尾蚴侵入泥鳅体表和肌肉内经10 d 结成囊蚴；家鸭口服囊蚴后3 d ，囊蚴在鸭盲肠内发育为成虫并向外排卵。整个发育周期持续96 d 。%This article has firstly reported the life cycle of Cyathocotyle caecumalis sp . nov and confirmed that Paraf ossarulus striatulus and Misgurnus auguillicaudatus served as the first and second intermediate host of C . caecumalis sp . nov , respectively . At room temperature of 20 - 28 ℃ ,miracidiia hatched from eggs after 21 days of incubation and developed into sporocyst in the snail host , It was found that cercaria emerged from the snail host after 62 days . Metacercariae may encysted on the surface or within the muscle of loach 10 days later . Ducks infected with metacerariae orally ovulated the mature eggs in the feces 3 days later . The total life cycle of C. caecumalis sp. nov lasted 96 days .
展开▼
