Ornithodoros moubata: spermateleosis and secretory activity of the sperm

Details

Serval ID
serval:BIB_E4BBECA8312C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Ornithodoros moubata: spermateleosis and secretory activity of the sperm
Journal
Experimental Parasitology
Author(s)
Sahli  R., Germond  J. E., Diehl  P. A.
ISSN
0014-4894 (Print)
Publication state
Published
Issued date
12/1985
Volume
60
Number
3
Pages
383-95
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Dec
Abstract
Cytological aspects of spermateleosis in the tick Ornithodoros moubata were studied by electron microscopy. During spermateleosis, detachment of the operculum from the outer sheath of the prospermium results from the fusion of the plasma and the cisternal membranes. The fusion occurs between the shoulder of the acrosomal vesicle and the electron-dense layer of the operculum. A factor inducing vitellogenesis and egg-laying is secreted by the sperm cell after spermateleosis, and begins after the cell is almost completely devaginated. In vitro, fully devaginated spermiophores secrete most of this factor during the first 12 hr of incubation. The vitellogenesis-inducing activity of the secretion is sensitive to proteinase K (EC 3.4.21.14) digestion and correlates with the presence of two high-molecular-weight proteins in the sperm cell incubation medium.
Keywords
Animals Cell Membrane/ultrastructure Endopeptidase K Endopeptidases/metabolism Female Male Microscopy, Electron Molecular Weight Reproduction Spermatogenesis Spermatozoa/ultrastructure Ticks/*physiology/ultrastructure Vitellogenesis
Pubmed
Web of science
Create date
24/01/2008 21:51
Last modification date
20/08/2019 17:08
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