title: Sperm morphology of mud dauber Sceliphron fistularium dahlbom (Hymenoptera: Apoidea: Sphecidae), as an indication of bees relation.
abstract: The morphology of spermatozoon of Sceliphron fistularium is very similar to that described for bees. In particular, the response to E-PTA stains is similar to that observed in corbiculated Apidae, especially Meliponini bees. Spermatozoa measure 285 microm and are composed of 1) a bilayered acrosome (acrosomal vesicle and perforatorium); 2) a homogeneous and compact nucleus; 3) a 9+9+2 axoneme; 4) a rod-shaped centriolar adjunct; 5) two asymmetrical mitochondrial derivatives with paracrystalline material exclusively in the larger one, and 6) two accessory bodies. Only the accessory microtubules of axoneme and the paracrystalline material are E-PTA positive. Comparison of S. fistularium sperm to data on Hymenoptera corroborates their proximity with bees.
authors.affiliation: Department of Cellular Biology, Institute of Biological Sciences, University of Brasilia, DF, Brazil. uyrazama@gmail.com
authors.forename: U
authors.initials: U
authors.lastname: Zama
authors.forename: P
authors.initials: P
authors.lastname: Brito
authors.forename: J
authors.initials: J
authors.lastname: Lino-Neto
authors.forename: L A O
authors.initials: LA
authors.lastname: Campos
authors.forename: H
authors.initials: H
authors.lastname: Doldero
authors.forename: S N
authors.initials: SN
authors.lastname: Báo
mesh_terms: D000818:Animals; D001516:Bees / Q000145:classification / Q000648:ultrastructure*; D006927:Hymenoptera / Q000648:ultrastructure*; D008297:Male; D046529:Microscopy, Electron, Transmission; D010802:Phylogeny; D013094:Spermatozoa / Q000145:classification / Q000648:ultrastructure*