An ultrastructural study of basommatophoran spermatozoa (Mollusca, Gastropoda)

Healy J.M. (1983) An ultrastructural study of basommatophoran spermatozoa (Mollusca, Gastropoda). Zoologica Scripta, 12 1: 57-66. doi:10.1111/j.1463-6409.1983.tb00549.x

Author Healy J.M.
Title An ultrastructural study of basommatophoran spermatozoa (Mollusca, Gastropoda)
Journal name Zoologica Scripta   Check publisher's open access policy
ISSN 0300-3256
Publication date 1983-01-01
Sub-type Article (original research)
DOI 10.1111/j.1463-6409.1983.tb00549.x
Volume 12
Issue 1
Start page 57
End page 66
Total pages 10
Language eng
Subject 1103 Clinical Sciences
Abstract Spermatozoa of the basommatophoran pulmonate families Ellobiidae (Ophicardelus ornatus Ferussac), Amphibolidae (Salinator fragilis Lamarck, Salinator solida von Martens), Siphonariidae (Siphonaria funiculata Reeve) and Lymnaeidae (Lymnaea lessoni (Deshayes)) were studied using transmission electron microscopy. Spermatozoa of all species, like most euthyneuran spermatozoa, possess (I) an acrosome composed of an apical vesicle and acrosomal pedestal (many differences between families), (2) a helically keeled, posteriorly invaginated nucleus, (3) a midpiece composed of paracrystalline and matrix materials and a variable number of incorporated glycogen-filled helices (one in Salinator and Siphonaria, two or three in Lymnaea, three in Ophicardelus) and (4) an axoneme associated with coarse fibres (periodically banded in "neck" region) and rows of intra-axonemal granules. The wide diversity of spermatozoon structure in the species studied, in particular the midpiece structure of Siphonaria (which resembles closely that of certain opisthobranchs) indicates that the Basommatophora may not represent a valid taxonomic unit. A comparison of basommatophoran sperm with other euthyneurans and with euspermatozoa of prosobranchs is given.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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