Baptista-Farias M F, Kohn A, Cohen S C
Laboratório de Helmintos Parasitos de Peixes, Departamento de Helmintologia, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21045-900, Brasil.
Mem Inst Oswaldo Cruz. 2001 Jan;96(1):61-70. doi: 10.1590/s0074-02762001000100007.
Ultrastructural observations of spermatogenesis and sperm development of Saccocoelioides godoyi, an intestinal parasite of Leporinus friderici (Bloch, 1794) are described. The irregular-shaped spermatogonia form a peripheral layer, and show a prominent nucleus. Spermatocytes are larger than spermatogonia, and in the early stage present synaptonemal complex. Spermatids show nuclei smaller than the spermatocytes. Spermiogenesis is characterized by outgrowth of the zone of differentiation, presenting basal bodies, separated by an intercentriolar body. At the end of this process, the spermatozoa are released into the residual cytoplasmic mass. The spermatozoa of S. godoyi are elongate, similar to the pattern described for other Digenea, showing nuclei, mitochondria and two axonemes with the 9+1 configuration. The peripheral cortical microtubules on the dorsal and ventral faces are laterally interrupted.
描述了戈氏囊腔吸虫（Saccocoelioides godoyi）的精子发生和精子发育的超微结构观察结果，该吸虫是弗里德里希氏兔脂鲤（Leporinus friderici，布洛赫，1794年）的肠道寄生虫。不规则形状的精原细胞形成外周层，并显示出一个突出的细胞核。精母细胞比精原细胞大，在早期呈现联会复合体。精子细胞的细胞核比精母细胞小。精子形成的特征是分化区的生长，呈现基体，由中心粒间体隔开。在这个过程结束时，精子被释放到残余细胞质团中。戈氏囊腔吸虫的精子细长，类似于其他复殖吸虫所描述的模式，显示出细胞核、线粒体和两条具有9+1结构的轴丝。背腹面的外周皮质微管在侧面中断。
