Sperm structure in the scissurellid gastropod Sinezona sp. (Prosobranchia, Pleurotomarioidea)

Healy J.M. (1990) Sperm structure in the scissurellid gastropod Sinezona sp. (Prosobranchia, Pleurotomarioidea). Zoologica Scripta, 19 2: 189-193.

Author Healy J.M.
Title Sperm structure in the scissurellid gastropod Sinezona sp. (Prosobranchia, Pleurotomarioidea)
Journal name Zoologica Scripta   Check publisher's open access policy
ISSN 0300-3256
Publication date 1990-01-01
Sub-type Article (original research)
Volume 19
Issue 2
Start page 189
End page 193
Total pages 5
Subject 1103 Clinical Sciences
Abstract Spermatozoa of Sinezona sp. (Scissurellidae) are examined ultrastructurally and compared with spermatozoa of other vetigastropods. Sinezona sperm are characterized by the following features: (1) a squat-conical acrosomal vesicle; (2) subacrosomal deposits-one forming a perinuclear sheath and the second forming a rod which almost penetrates the nucleus; (3) prominent nuclear invaginations enclosing the axial rod and centriolar regions; (4) a midpiece consisting of axoneme surrounded by a single, sleeve-like mitochondrion; (5) an annulus occurring posterior to the midpiece; and (6) a flagellum. Spermatozoa of Sinezona sp. are clearly modified in structure in comparison with spermatozoa of other pleurotomarioids and, more generally, most other vetigastropods (these retain multiple, spherical mitochondria and, with rare exceptions, do not have the centrioles located in a nuclear invagination).
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 28 Jun 2016, 15:37:58 EST by System User