Antimicrobial resistance profi le of Vibrio species isolated from the hatchery system of Macrobrachium rosenbergii (Deman)

Abstract

Vibrio spp. are responsible for high mortality and severe economic loss in prawn industry in all the prawn producing countries. The incidence of high antibiotic resistance is reported in hatcheries. For the present study, 23 isolates of Vibrio species from the larvae, larval rearing water, Artemia and Artemia rearing water from the hatchery system of Macrobrachium rosenbergii were used. The isolates were characterised and nine different species were identifi ed viz., V. harveyi, V. parahaemolyticus, V. damsela, V. splendidus, V. anguillarum, V. alginolyticus, V. fl uvialis, V. vulnificus and V. campbelli. Fifteen commonly used antibiotics in the hatchery system were tested against the isolated Vibrio species. The results showed that all the isolates (100%) were resistant to ampicillin, erythromycin, doxycycline hydrochloride and sensitive to amikacin, chloramphenicol, cefaclor, gentamycin and streptomycin.