Acta Parasitologica, Vol. 51, No. 4, 2006, 286-289 Maria A. Rossin(1,2,3)*, Juan T. Timi(1,3) and Ana I. Malizia(2) - A new species of Trichostrongylus (Nematoda, Trichostrongyloidea) parasitizing the subterranean
rodent Ctenomys talarum (Rodentia, Octodontidae) from Mar de Cobo, Argentina
(1)Laboratorio de Parasitologia, (2)Laboratorio de Ecofisiologia, Departamento de Biologia, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (7600) Mar del Plata, Argentina, (3)Consejo Nacional de Investigaciones Cientificas y
Tecnicas, (CONICET), Argentina
*Corresponding author: rossin@mail.com
ABSTRACT
A new nematode species, Trichostrongylus duretteae sp. nov., found in the small intestine of Ctenomys talarum from Argentina is described. The new species more closely resembles T. suis Iwanitsky, 1930 a parasite of Sus scrofa in the USSR. However, the new species can be distinguished by the morphology of male genital bursa: Rays 6 distant from rays 8 and a larger dorsal ray in relation to the length of rays 2 to 8. The present finding is the first record of the genus Trichostrongylus in rodents of the family Octodontidae.
KEY WORDS: Trichostrongylus duretteae sp. nov., Nematoda, Ctenomys talarum, subterranean rodent, Argentina