Abstract— In recent year’s fish farming has greatly increased in Brazil, favoring the development of diseases such as mycobacteriosis. This is a chronic progressive disease that affects temperate and tropical fish, both freshwater and marine. Mycobacteriosis can occur in several species of fish and amphibian. In addition, some species of Mycobacterium spp. can be transmitted to humans by occupational or recreational source. A total of 54 fishes from lakes from São Paulo city, were collected and examined for mycobacteriosis. Granulomas were visualized in 5 fishes via histopathology (H&E), and acid-alcohol resistant bacilli were visualized in 8 animals by electron microscopy and 8 were positives using the Fite -Faraco technique. In this study, we isolated acid-fast bacillus from one fish which were identified as M. gordonae by molecular methods: PCR and sequencing.
Keywords— mycobacteriosis, pathology, aquaculture, sanity, disease.
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