title: Ultrastructure of spermiogenesis and the spermatozoon in Taenia crassiceps strobilae WFU strain (Cestoda, Cyclophyllidea, Taeniidae) from golden hamsters.
abstract: Strobilae from Taenia crassiceps (WFU strain) were obtained from outbred hamsters (Mesocricetus auratus) by feeding them viable metacestodes maintained by intraperitoneal passage in female Balb/c mice. Mature and gravid proglottids from strobilae were recovered from hamster intestines and fixed for light and electron microscopy. By light microscopy, the expected structure of taeniid proglottids was observed. Ultrastructural analysis of ten proglottids showed that testicular follicles and vas deferens contained filiform spermatids, with a single axoneme, and an elongated helicoidal nucleus inserted between the axoneme and the spiraled cortical microtubules. At the apical cone, a single crest-like body was found and mature spermatids also exhibited transverse intracytoplasmic walls. The morphology and characters of the spermatids in T. crassiceps conform to type III spermiogenesis, which has been described in other taeniids.
authors.affiliation: Department of Microbiology and Parasitology, Facultad de Medicina, UNAM, Ciudad Universitaria, Edificio A, Primer Piso, Circuito Escolar, D.F., Mexico, Mexico. kaethe@servidor.unam.mx
authors.forename: Kaethe
authors.initials: K
authors.lastname: Willms
authors.forename: Lilia
authors.initials: L
authors.lastname: Robert
authors.forename: José Agustín
authors.initials: JA
authors.lastname: Jiménez
authors.forename: Mary
authors.initials: M
authors.lastname: Everhart
authors.forename: Raymond E
authors.initials: RE
authors.lastname: Kuhn
mesh_terms: D000818:Animals; D021461:Animals, Outbred Strains; D006224:Cricetinae; D005260:Female; D008297:Male; D008647:Mesocricetus / Q000469:parasitology*; D051379:Mice; D008807:Mice, Inbred BALB C; D013091:Spermatogenesis / Q000502:physiology*; D013094:Spermatozoa / Q000502:physiology / Q000648:ultrastructure*; D013621:Taenia / Q000145:classification / Q000302:isolation & purification / Q000502:physiology*