华南农业大学学报2017，Vol.38Issue(4)：57-61,5.DOI:10.7671/j.issn.1001-411X.2017.04.010
有轮瑞利绦虫(圆叶目:戴维科)精子的超微结构
Ultrastructure of spermatozoon of Raillietina cesticillus (Cyclophylidea: Davaineidae)
摘要
Abstract
[Objective] To illustrate the ultrastructure of the spermatozoon of Raillietina cesticllus.[Method]Transmission electron microscope was used to observe the morphorlogy and structure of the spermatozoon of R.cesticllus parasitized in chicken intestine.[Result]The spermatozoon of R.cesticllus is filiform, tapers at both ends, has crested-like body and lacks the mitochondria.It has axonemes with the "9+1" pattern.Based on longitudinal sections of R.cesticllus spermatozoon, five regions could be distinguished.RegionⅠcorresponds to the anterior extremity of the spermatozoon, having a crested-like body.RegionⅡ is characterized by the presence of cortical microtubules, a periaxonemal sheath and intracytoplasmic walls.Region Ⅲ has plenty of electro-dense granules.Region Ⅳ is characterized by the presence of the nucleus.RegionⅤcorresponds to the posterior end of the spermatozoon, having free flagellums.The spermatozoons of R.cesticllus and R.echinobothrida each has one crested-like body, while the spermatozoons of all other six reported davaineid cestode each has two crested-like bodies.The rotation angle of the crested-like body of R.cesticllus is 40°to 55°, other than 35° for R.echinobothrida.[Concluison]The number and rotation angle of the crested-like body of the spermatozoon head can descriminate R.cesticllus from other seven reported Davaineidae cestode.关键词
有轮瑞利绦虫/精子/超微结构/透射电镜/冠状体Key words
Raillietina cesticillus/spermatozoon/ultrastructure/transmission electron microscope/crested-like body分类
生物科学引用本文复制引用
孙媛,曾瑶,闫宝佐,李海云..有轮瑞利绦虫(圆叶目:戴维科)精子的超微结构[J].华南农业大学学报,2017,38(4):57-61,5.基金项目
国家自然科学基金(41106129) （41106129）
广东省自然科学基金(06025794) （06025794）
