title: [Ultrastructural study of spermiogenesis in Acanthobothrium filicolle var. filicolle Zschokke, 1988 (Cestoda, Tetraphyllidea, Onchobothriidae)].
abstract: The spermiogenesis of the Onchobothriidae Tetraphyllidea A. filicolle filicolle is similar to that of the other Onchobothriidae. In this study, it is proved that: --the longitudinal displacement of the axonemes seen in the spermatozoon results from the sliding of one of the two axonemes during spermiogenesis. --the basal bodies and their attached rootlets which appear in the early spermiogenesis are enclosed within the spermatozoon body. --the crested like body indicates the extremity from which the spermatozoon detaches from residual cytoplasm. The origin of cortical microtubules and the gutter-like arranged ones near the axoneme, is discussed.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D002589:Cestoda / Q000502:physiology* / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008870:Microtubules / Q000648:ultrastructure; D013082:Sperm Tail / Q000648:ultrastructure; D013087:Spermatids / Q000648:ultrastructure; D013091:Spermatogenesis; D013094:Spermatozoa / Q000648:ultrastructure*
vernacular_title: Etude ultrastructurale de la spermiogenése de Acanthobothrium filicolle var. filicolle Zschokke, 1888 (Cestoda, Tetraphyllidea, Onchobothriidae).