Redescription of Trichuris laevitestis (Nematoda: Trichuridae) from Akodon azarae and Scapteromys aquaticus (Sigmodontinae: Muridae) in Buenos Aires province, Argentina.

ROBLES, MARÍA DEL ROSARIO; NAVONE GRACIELA T.

JOURNAL OF PARASITOLOGY

Allen Press

Año: 2006 vol. 92 p. 1053 - 1057

0022-3395

The genus Trichuris has a cosmopolitan distribution, and the species are identified by features related to the reproductive system. Trichuris laevitestis was described on the basis of specimens collected from rodents captured in Punta Lara, Buenos Aires Province, Argentina. In this paper T.  laevitestis is redescribed taking into account new and relevant morphological features of diagnostic importance. Scapteromys aquaticus and Akodon azarae specimens captured in Rio de la Plata and, Paraná Guazú river and at Cerro de la Gloria, Buenos Aires Province, Argentina, were examined. The bacillary band of T. laevitestis are described, and several morphological details of this species are illustrated and photographed with SEM for the first time. The redescription of T. laevitestis confirms its identity as a valid species. In addition, the present study extends the geographical distribution of the species.