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

• Type: Article in International Scientific Journal
• Date: 1985

Authors

AZEVEDO, C (Author) Other; lobo-da-cunha, a (Author) ICBAS; OLIVEIRA, E (Author) Other

Journal

Title: Journal of Submicroscopic Cytology and Pathology

Vol. 17

Pages: 609-614

ISSN: 1122-9497

Publisher: N I E Nuova Immagine Editrice

Indexing

ISI Web of Knowledge - 19 Citations

Scopus - 15 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6