Estudo morfológico e biométrico das larvas infectantes dos nematóides (Nematoda: Strongylidae) intestinais de equinos

Abstract

Morphological and biometrical studies were carried out to improve the differential diagnostic of infective larvae of Strongylus vulgaris, Strongylus equinus, Strongylus edentatus, Triodontophorus spp., Triodontophorus tenuicollis, Poteriostomum spp., Gyalocephalus capitatus, Cylicocyclus radiatus, Cylicocyclus nassatus, Cylicocyclus ashworthi, Cylicostephanus minutus e Cylicostephanus poculatus. Pure cultures of larvae were obtained from eggs collected from adult female worms during necropsy of six naturally infected horses. Mixed cultures were obtained from feces of naturally infected horses from three counties of the State of Rio de Janeiro. The following measurements as total length, sheath tail length, esophageal and intestinal length, distance of genital primordium to the tip of the tail and width were considered as the main measurements in the identification of the third stage larvae. xix. A pictorial key for identifing infective larvae well as photomicrographies of the morphological characteristics were given in this work.