title: [Ultrastructure of the spermatozoid of Centrorhynchus milvus Ward 1956 (Paleacanthocephala, Polymorphidae)].
abstract: The Centrorhynchus milvus spermatozoon is a filiform cell. The free part of the flagellum measure 2 mu and is situated in front of the gamete. The centriole is no more visible but an axial tubule formation is found at the anterior extremity of the flagellum. This Polymorphidae spermatozoon shows a reversed anatomy like the one we described for the first time with an acanthocephala wich belongs to the Rhadinorhynchidae family.
mesh_terms: D000049:Acanthocephala / Q000033:anatomy & histology*; D000818:Animals; D005407:Flagella / Q000648:ultrastructure; D008297:Male; D013094:Spermatozoa / Q000648:ultrastructure*
vernacular_title: Ultrastructure de spermatozoïde de Centrorhynchus milvus Ward, 1956 (Paleacanthocephala, Polymorphidae)