东方杯叶吸虫囊蚴壁和后尾蚴及成虫体表的扫描电镜观察

OBSERVATION ON SCANNING ELECTRON MICROSCOPE OF THE CYST WALL,BODY WALLS OF METACERCARIAE AND ADULTS CYATHOCOTYLE ORIENTALLS

东方杯叶吸虫囊蚴壁光滑完整,囊壁两层,外囊壁纤维状,内囊壁无细胞结构,由电子致密的颗粒和小体组成。扫描电镜显示后尾蚴和成虫的附着器表皮均特化为微毛,体表被体棘和具纤毛乳突;差别是,后尾蚴的单生棘演变为成虫的簇生棘,无纤毛圆丘形乳突由成虫的无纤毛窝状乳突取代。本文详细描述了体棘和乳突等的形态和分布.对这些结构的功能及其在发育过程中演变的意义进行了讨论。

The cyst wall of Cyathocotyle orientalis can be divided into two layers:the out- er layer with fibrillar structure,the inner one with noncellular structure and formed by dense granules and bodies.The surfaces of both metacercariae and the adhesive organ in adults are spe- cialized into microvilli and with body spines and ciliated papillae.The morphology and topogra- phy of the body spines and sense papillae are carefully described,further more the possible func- tion of these structures mentioned above and their signicance in development of the fluke are also discussed.