RESUMO
Wellcomia species (Oxyuridae, Syphaciinae) parasitise several families of rodents from Africa, Asia and America with diverse ecological characteristics. A new species of Wellcomia is described based on specimens obtained from the plains viscacha Lagostomus maximus (Chinchillidae) from Argentina. The description includes morphometric and ecological aspects and an emended diagnosis of the genus Wellcomia. In addition, a molecular characterisation (18S rRNA) and an exploratory analysis of the genetic distances of the species included in this genus are provided. The new species, Wellcomia hugoti n. sp., differs from other species of the genus in the morphology of the cephalic plate, the ventral rugose area in males and the vulva in females. The new species showed a low prevalence (7.7%) and a high mean abundance (73.8). The genetic distances detected do not allow a comprehensive assessment of the monophyly of the genus. This is the seventh record of this genus in rodents from the Americas, the second in rodents from Argentina and the first record for the family Chinchillidae.
Assuntos
Oxiuríase/veterinária , Oxyuroidea/classificação , Doenças dos Roedores/parasitologia , Roedores/parasitologia , Animais , Argentina/epidemiologia , Feminino , Masculino , Oxiuríase/epidemiologia , Oxiuríase/parasitologia , Oxyuroidea/citologia , Oxyuroidea/genética , Prevalência , Doenças dos Roedores/epidemiologia , Especificidade da EspécieRESUMO
Syphacia muris worm burdens were evaluated in the rat Rattus norvegicus of the strains Wistar (outbred), Low/M and AM/2/Torr (inbred), maintained conventionally in institutional animal houses in Brazil. Morphometrics and illustration data for S. muris recovered from Brazilian laboratory rats are provided for the first time since its proposition in 1935.
Assuntos
Animais de Laboratório/parasitologia , Oxyuroidea/citologia , Ratos/parasitologia , Animais , Feminino , Masculino , Oxyuroidea/fisiologiaRESUMO
Syphacia muris worm burdens were evaluated in the rat Rattus norvegicus of the strains Wistar (outbred), Low/M and AM/2/Torr (inbred), maintained conventionally in institutional animal houses in Brazil. Morphometrics and illustration data for S. muris recovered from Brazilian laboratory rats are provided for the first time since its proposition in 1935