Abstract
The necropsy of 5 specimens of C. brachyurus which were accidentally run over on different routes in the north-central province of Santa Fe. All of these had multiple whitish nodules with a cystic appearance between the distal third of the trachea and bronchi containing parasites arranged in the shape of a ball inside. Morphological identification of adult’s nematodes and larvae eggs from females was performed, where it was possible to identify typical characters of the species O. osleris. Likewise, the lungs were increased in consistency, with petechial and multifocal ecchymosis and the presence of whitish nodules scattered throughout the parenchyma. Two of the canids had an increase in the size of the bronchial lymph nodes. The inspection of the respiratory system together with the observation of lesions and the nematodes found inside with their corresponding measurements, are compatible with the species O. osleri, which would imply the first report of this parasite in wild canids from Argentina.
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