Process of nuclear envelope reduction in spermiogenesis of a mosquito, Culex tigripes

When the Culex tigripes spermatid begins to elongate, the nucleus exhibits on its surface invaginations of the nuclear envelope. These invaginations have a uniform diameter of 0.3 microns. They separate from the envelope of the nucleus and form spherical intranuclear vesicles. In the old spermatids...

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Bibliographic Details
Published inMolecular reproduction and development Vol. 34; no. 4; p. 416
Main Authors Ndiaye, M. (Universite Cheikh Anta Diop de Dakar, Dakar, Senegal), Mattei, X
Format Journal Article
LanguageEnglish
Published United States 01.04.1993
Subjects
Animals
CELL STRUCTURE
CELL ULTRASTRUCTURE
CULEX
Culex - physiology
Culex - ultrastructure
ESPERMATOGENESIS
ESPERMATOZOO
ESTRUCTURA CELULAR
Male
Microscopy, Electron
NOYAU CELLULAIRE
Nuclear Envelope - ultrastructure
NUCLEI
NUCLEO
NUCLEUS
SPERMATIDS
Spermatids - ultrastructure
SPERMATOGENESE
SPERMATOGENESIS
Spermatogenesis - physiology
SPERMATOZOA
Spermatozoa - ultrastructure
SPERMATOZOIDE
STRUCTURE CELLULAIRE
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Summary:When the Culex tigripes spermatid begins to elongate, the nucleus exhibits on its surface invaginations of the nuclear envelope. These invaginations have a uniform diameter of 0.3 microns. They separate from the envelope of the nucleus and form spherical intranuclear vesicles. In the old spermatids these vesicles are imprisoned in the condensed chromatin. The spermatozoon also possesses these vesicles which are then ovoid in shape. This process of vesiculation permits the diminution of the surface of the nucleus when it decreases in volume during spermiogenesis.
Bibliography:L40
9411782
L53
ISSN:1040-452X
1098-2795
DOI:10.1002/mrd.1080340410