Diaphanocephalus galeatus (Nematoda: Diaphanocephalidae), a poorly known parasite of lizards: redescription, first genetic characterization and a revision of its congeners from Brazil

Journal of Helminthology
Felipe B PereiraLuiz E R Tavares

Abstract

Diaphanocephalus galeatus collected from the small intestine of the lizard Dracaena paraguayensis in the Pantanal wetlands, State of Mato Grosso do Sul, Brazil, is redescribed. Genetic characterization and observations using scanning electron microscopy (SEM) were performed for the first time. The vouchers of D. galeatus and the type specimens of its congeners, deposited in the Coleção Helmintológica do Instituto Oswaldo Cruz (CHIOC), were consulted. Light and SEM observations revealed several undescribed features of D. galeatus, i.e. structure of the cephalic end and of the buccal capsule, position and morphology of deirids, presence of phasmids in females and presence of unpaired papilla on the membranous projection that covers the genital cone in males. After observation of the specimens deposited in the helminthological collection, D. jacuruxi is considered a synonym of D. galeatus, and D. diesingi, despite its incomplete description, is tentatively retained as valid due to the poor condition of the type material. The results also indicated low host specificity of D. galeatus, contradicting previous assertions. Genetic comparisons using patristic distances and phylogenetic trees generated from sequences of the 28S rRNA nucl...Continue Reading

References

Dec 1, 1994·International Journal for Parasitology·M C Durette-DessetD M Spratt
Jan 1, 1993·Annales De Parasitologie Humaine Et Comparée·M C Durette-Desset, A G Chabaud
Mar 24, 1998·Nature·M L BlaxterW K Thomas
Aug 31, 2000·Journal of Molecular Biology·C NotredameJ Heringa
Aug 29, 2001·Bioinformatics·J P Huelsenbeck, F Ronquist
Oct 8, 2003·Systematic Biology·Stéphane Guindon, Olivier Gascuel
Apr 6, 2006·Molecular Phylogenetics and Evolution·Neil B ChiltonIan Beveridge
Nov 7, 2006·Molecular Phylogenetics and Evolution·Birgit H M MeldalP J D Lambshead
Aug 1, 2012·Nature Methods·Diego DarribaDavid Posada
Jun 26, 2014·Parasitology·Mark Blaxter, Georgios Koutsovoulos
Sep 1, 2016·Brazilian Journal of Biology = Revista Brasleira De Biologia·A A M TeixeiraW O Almeida

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