title: Fine structure and function of the genital pore of the female of Intoshia variabili (Orthonectida).
abstract: The genital pore of the female of Intoshia variabili Aleksandrov et Sljusarev, 1992 is located on a transverse ring of non-ciliated cells. Before copulation it is occupied by 6-7 cells that develop in the epithelium and that for a time are beneath the surface. When fully developed, these cells contain many electron-dense granules and their apical surface is covered with numerous microvilli. After copulation the granules disappear and the apical surface becomes smooth. The cells still form a plug closing the opening. After one larva pushes the pore cells out and escapes, others follow.
authors.affiliation: Department of Invertebrate Zoology, Faculty of Biology and Soil Science, Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg 199034, Russia. slyusarev@hotmail.com
authors.forename: George S
authors.initials: GS
authors.lastname: Slyusarev
mesh_terms: D000818:Animals; D005260:Female; D005836:Genitalia, Female / Q000033:anatomy & histology / Q000648:ultrastructure; D007448:Invertebrates / Q000033:anatomy & histology* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D010986:Platyhelminths / Q000469:parasitology*; D012426:Russia