Antibiotic Resistant Bacteria in Fish from the Concepcion Bay, Chile

摘要

Antibiotic resistant bacteria from commercial demersal and pelagic fish captured in the Concepcion Bay, Chile were investigated. Viable counts of antibiotic resistant bacteria isolated from gill and intestinal content samples showed high frequencies of resistance to ampicillin, stretpomycin and tetracycline, while the proportion of chloramphenicol resistance was rather low. A high inci- dence of resistance to ampicillin, stretpomycin, tetray- cline and nitrofurantoin, as well as almost an absence of resistance to gentamicin, amikacin and cotrimoxazole was found among selected isolates which represented the re- sistant bacterial population. These strains mainly be- longed to Vibrionaceae and Enterobacteriaceae and were predominantly resistant to 3 and 4 antibacterials.