Presence of Cooperia curticei, C. punctata and Trichostrongylus colubriformis, (Strongylida: Trichostrongylidae) in Tabasco, Mexico

[摘要] The aim of this study was to report and morphologically describe two small intestinal nematode genera present in cattle and sheep from Tabasco, Mexico. The specimens studied were obtained from animals for slaughter on a trail, cleared in Amann's lactophenol and their measurements were recorded using a calibrated ocular micrometer. Based on their morphologic characteristics, three species were identified: Cooperia curticei, Cooperia punctata and Trichostrongylus colubriformis. In C. curticei, the length of the tail-vulva was higher (1726.9± 194.4 mm) than in C. punctata (1422.1±151.7 mm); and the vulva shape of C. curticei was flat, while in C. punctata, it was botonous. In Cooperia males, the spicule lengths were similar in both species (139±13 mm). The differentiation was carried out morphologically; C. curticei and T. colubriformis were the species found in the small intestine of sheep, while C. puntata was found in that of cattle.

[学科分类] 兽医学

[关键词] Cooperia curticei;Cooperia punctata;Trichostrongylus colubriformis;ruminants;parasites