Study of different types of mycobacteria in sediments of fish breeding pools of north of Iran

In this study, 307 samples of the sediments of fish breeding pools of the different parts of North of Iran were tested for the survey of different environmental Mycobacteria. After the process of cultivation, 107 cases of Mycobacterium were gained which after the performance of different biochemical tests. 112 cases of Mycobacterium were identified. From among the isolated Mycobacteria, the highest rank belonged to M.fortuitum with the frequency of 13.97% and the next M.gordonae 10.66% M.xenopi, M.nonchromagenicum 8.2% and the last M.marinum with the frequency of 5.74%. M.marinum was the case of Tuberculosis of fish and had important role in the creation of granuloma. Next to that, M.fortuitum, M.kanasasii and M.gordenae had less importance. The existence of such Mycobacteria in the fish breeding pools were on one hand the cause of pollution of fish and on the other hand the fishman and other people who are somehow connected to the fish and the pools sediments are subject to disease in case of existence of injury in their hands or fee