Transferable chloramphenicol resistance determinant in luminous Vibrio harveyi from penaeid shrimp Penaeus monodon larvae

Transferable chloramphenicol resistance determinant in luminous Vibrio harveyi from penaeid shrimp Penaeus monodon larvae

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Antibiotic-resistant luminous Vibrio harveyi strains isolated from Penaeus monodon Pedestal larvae were screened for the possession of transferable resistance determinants.All the strains were resistant to chloramphenicol and the determinant Mirror Covers coding for chloramphenicol resistance was transferred to Escherichia coli at frequencies of 9.50x10-4 to 4.20x10-4.The results probably suggest the excessive use of chloramphenicol in shrimp hatcheries to combat luminous vibriosis.