Identification of drug resistant pathogens of Vibrio spp and Aeromonas spp.

What is it about?

aquaculture environment were contaminated with Vibrio anguillarum, V. damsel, V. furnissii, Aeromonas hydrophila and A. sobria. Both Vibrio spp and Aeromonas spp were shown to be pathogenic and to cause mortality to the infected post larval P. monodon. LD50 values of V. anguillarim, V. damsel, V. funrissii, A. hydrophila and A. sobria to post larval P. monodon were determined as 1.1 x 105, 2.7 x 105, 6.0 x 105, 8.5 x 104, and 7.5 x 104 bacterial cells/ml respectively. Ciprofloxacin and streptomycin were found to be the most effective antibiotics in the reduction of the mortality of experimentally infected post larvae. The growth of Vibrio spp was inhibited by nifurpirinol (prefuran) at 25 µg/ml, oxytetracycline at 13 µg/ml, erythromycin phosphate at 4 µg/ml, chloramphenicol at 12 µg/ml, streptomycin at 2 µg/ml, and ciprofloxacin at 1 µg/ml. While the growth of Aeromonas spp was inhibited by nifurpirinol (prefuran) at 24 µg/ml, oxytetracycline at 14 µg/ml, erythromycin phosphate at 5 µg/ml, chloramphenicol at 12 µg/ml, streptomycin at 2 µg/ml, and ciprofloxacin at 1 µg/ml. Vibrio spp. was sensitive to o/129 vibriostatic agent (150µg) whereas Aeromonas spp. was resistant to it. The pathogenic bacteria viz. Vibrio spp and Aeromonas spp could be controlled to some extent with judicious use of effective antibiotics to improve the health status of shrimp in culture conditions and can have a positive impact in the areas of sustainable aquaculture environment and development.

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Why is it important?

pathogenicity and antibiotics resistance of bacterial pathogens is a global problem and hence the publication is very important