ULTRASTRUCTURE OF THE SPERMATOZOON IN GIBBULA-UMBILICALIS (GASTROPODA, PROSOBRANCHIA), WITH SPECIAL REFERENCE TO ACROSOMAL FORMATION

• Tipo: Artigo em Revista Científica Internacional
• Data: 1985

Autores

AZEVEDO, C (Autor) Outra; lobo-da-cunha, a (Autor) ICBAS; OLIVEIRA, E (Autor) Outra

Revista

Título: Journal of Submicroscopic Cytology and Pathology

Vol. 17

Páginas: 609-614

ISSN: 1122-9497

Editora: N I E Nuova Immagine Editrice

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 15 Citações

Outras Informações

ID Authenticus: P-001-WF7

Abstract (EN): The spermatozoon of Gibbula umbilicalis has been observed under light and electron microscopy. During spermiogenesis, in early spermatids, several dense vesicles appear in close association with golgian cisternae. Later, these vesicles seem to fuse, forming a dense proacrosomal vesicle which contacts the apical zone of the nuclear envelope. In middle spermatids, a single dense proacrosomal vesicle is observed in the apical zone of the nucleus. Later, a subacrosomal zone is differentiated forming a long cylindrical space containing flocculent material. During natural or artificial fertilization in the subacrosomal space, the perforatorium is differentiated.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6