Redescription of Syphacia venteli Travassos, 1937 (Nematoda: Oxyuridae) from Nectomys squamipes Brants, 1827 in Argentina

ROBLES, MARÍA DEL ROSARIO; NAVONE, GRACIELA T.

COMPARATIVE PARASITOLOGY

Allen Press

Lugar: Lawrence, Kansas; Año: 2009

1525-2647

Of the 20 species of Syphacia known from North and South America, 13 were described from sigmodontine rodents, of which 7 belong to the tribe Oryzomyini. Syphacia venteli Travassos, 1937 is redescribed on the basis of new specimens recovered from the type host Nectomys squamipes captured in Misiones Province, Argentina. Structures such as the shape of the cephalic plate, details and distribution of the submedian papillae and amphids, presence and absence of the cervical and lateral alae, and shape and structure of the accessory hook of the gubernaculum were studied with the light microscope and scanning electron microscope. Since the specific determination of Quentin’s specimens of S. venteli from Melanomys caliginosus in Colombia is questionable, the present survey is the first detailed study of the species since the original description, and is the first record of this species from Argentina.