title: Antibiotic resistance of motile aeromonads in indoor catfish and eel farms in the southern part of The Netherlands.
abstract: The prevalence and degree of antibiotic resistance in catfish and eel farms in the southern part of The Netherlands was examined using motile aeromonads as indicator bacteria. A total of 29 water samples were collected, originating from six catfish farms, one catfish hatchery and three eel farms, and were plated on an Aeromonas-selective agar with and without antibiotics. From each plate, one colony was screened for presumptive motile aeromonads and tested for antibiotic susceptibility. The prevalence of resistance was as follows: ampicillin and oxytetracycline 100%; sulfamethoxazole 24%; trimethoprim 3%; and ciprofloxacin and chloramphenicol 0%. The majority of samples showed a high degree of oxytetracycline resistance, implicating fish farms as a major reservoir of oxytetracycline resistance genes. This reservoir might form a risk for human health and has major consequences for the effectiveness of this antibiotic in the treatment of infectious diseases in fish.
authors.affiliation: Nutrition and Toxicology Research Institute Maastricht, Department of Epidemiology, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands. j.penders@epid.unimaas.nl
authors.forename: J
authors.initials: J
authors.lastname: Penders
authors.forename: E E
authors.initials: EE
authors.lastname: Stobberingh
mesh_terms: D000333:Aeromonas / Q000187:drug effects* / Q000302:isolation & purification / Q000502:physiology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002397:Catfishes / Q000382:microbiology*; D004352:Drug Resistance, Microbial; D004524:Eels / Q000382:microbiology*; D008826:Microbial Sensitivity Tests; D009426:Netherlands
chemical_list: D000900:Anti-Bacterial Agents