CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
New data on the morphology of three species of Syphacia (Nematoda, Oxyuridae), with a first record from Argentina
Autor/es:
ROBLES, MARÍA DEL ROSARIO; KINSELLA, JOHN M.; NAVONE, GRACIELA T.
Revista:
ACTA PARASITOLOGICA
Editorial:
Polish Academy of Sciences
Referencias:
Año: 2007
ISSN:
1230-2821
Resumen:
The genus Syphacia includes about 60 species. Of the 20 species known from North and South America, 11 were described from sigmodontine rodents. Important structures of these nematodes are poorly visualized under light microscopy and have been inadequately described in most species. Specimens of Syphacia venteli were found in the cecum of Nectomys squamipes from Misiones Province, Argentina. Specimens of Syphacia sigmodoni from Sigmodon hispidus and S. oryzomyos from Oryzomys palustris collected previously in Florida, USA were restudied. New details of the morphology of all 3 species were observed under SEM, including the shape of the cephalic plate, details and distribution of the submedian papillae and amphids, fine points of the cervical and lateral alae, and shape and structure of the accessory hook of the gubernaculum. Since the specific determination of S. venteli from Melanomys caliginosus by Quentin (1969) is considered questionable, and our specimens are from the type host, N. squamipes, the present study is probably the first detailed study of S. venteli since the original description, and is the first record of this species from Argentina.