Please use this identifier to cite or link to this item:
https://www.arca.fiocruz.br/handle/icict/44109
Type
ArticleCopyright
Open access
Collections
- IOC - Artigos de Periódicos [12708]
Metadata
Show full item record
ULTRASTRUCTURE OF SPERMATOGENESIS AND SPERM DEVELOPMENT IN SACCOCOELIOIDES GODOYI KOHN & FROES, 1986 (DIGENEA, HAPLOPORIDAE)
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Peixes. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Peixes. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Peixes. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Peixes. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Helmintologia. Laboratório de Helmintos Parasitos de Peixes. Rio de Janeiro, RJ, Brasil.
Abstract
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.
Share