Prevalence and antibiotic susceptibility of Vibrio parahaemolyticus isolated from lobster (Panulirus ornatus) in cage culture in Phu Yen province

Abstract

The objective of this study was to determine the prevalence and to assess the antibiotic susceptibilityof the isolated Vibrio parahaemolyticus strains from 30 diseased lobsters (Panulirus ornatus) cultured in cage in Cu Mong lagoon, Xuan Dai bay and An Chan open coast of Phu Yen province. As a result, there were 6 V. parahaemolyticus strains isolated (accounting for 20% of the surveyed samples were positive with Vibrio). The Vibrio parahaemolyticus infection rate of lobster in Cu Mong, Xuan Dai and An Chan areas was 30%, 20% and 10% respectively. The tested result on antibiotic susceptibility of the isolated V.parahaemolyticus strains showed that 4 sensitive antibiotics were tetracycline, streptomycine, gentamycine, doxycilline; 3 intermediatesensitive antibiotics were ciprofloxacine, erythromycin, ofloxacine and 4 antibiotics cefoperazon,kanamycine, neomycin, oxacyline were resisted by V.parahaemolyticus. These study results can be used as a base to select the antibiotics use in treating the diseases of lobster caused by V. parahaemolyticus in cage culture.