Ultrastructure of the spermatozoon of an opisthobranch, Tornatina sp. (Mollusca, Gastropoda, Retusidae)

Healy J.M. (1982) Ultrastructure of the spermatozoon of an opisthobranch, Tornatina sp. (Mollusca, Gastropoda, Retusidae). Zoologica Scripta, 11 3: 221-226. doi:10.1111/j.1463-6409.1982.tb00535.x


Author Healy J.M.
Title Ultrastructure of the spermatozoon of an opisthobranch, Tornatina sp. (Mollusca, Gastropoda, Retusidae)
Journal name Zoologica Scripta   Check publisher's open access policy
ISSN 0300-3256
Publication date 1982-01-01
Sub-type Article (original research)
DOI 10.1111/j.1463-6409.1982.tb00535.x
Open Access Status Not yet assessed
Volume 11
Issue 3
Start page 221
End page 226
Total pages 6
Subject 1103 Clinical Sciences
Abstract The spermatozoon of Tornatina sp. has been studied with phase-contrast light microscopy and transmission electron microscopy. The head of the spermatozoon consists of an elongate acrosome which caps the apex of an unusually complex, helical nucleus. This elaborate nuclear morphology has not been previously reported, but possibly is found in other opisthobranch gastropod spermatozoa. An axoneme is inserted deeply into the base of the nucleus whilst posterior from the nucleus, the axoneme is ensheathed successively by the mitochondrial derivative (midpiece) and 'glycogen' granules (glycogen piece). The midpiece exhibits fine structure similar to that observed in other euthyneuran spermatozoa (paracrystalline and matrix materials) and possesses a single helical compartment filled with what are probably glycogen granules. A dense ring structure occurs at the junction of the midpiece and glycogen piece. The spermatozoon of Tornatina and other gastropods (prosobranch and euthyneuran) are compared.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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