Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Prevalence of plasmid-mediated quinolone and tetracycline resistance genes in Aeromonas strains isolated from eel (Anguilla japonica) and ornamental fish

  • Gee-Wook Shin (Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine, Jeonbuk National University) ;
  • Jun-Hwan Park (Bio-Safety Research Institute and College of Veterinary Medicine, Jeonbuk National University) ;
  • Hui-Ju Kim (Bio-Safety Research Institute and College of Veterinary Medicine, Jeonbuk National University)
  • Received : 2023.12.07
  • Accepted : 2023.12.11
  • Published : 2023.12.31
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Abstract

This study investigated the genetic determinants of plasmid-mediated antibiotic resistance (PMAR) to quinolones and tetracycline in 106 Aeromonas strains isolated from eel (Anguilla japonica, 70 strains) and ornamental fish (36 strains) in Korea. Quinolones and tetracycline resistance phenotypes were found to be widely distributed throughout the both fish groups. However, the prevalence of qnr and tet genes was higher in ornamental fish strains than in eel strains (42.9% vs. 86.1% for qnr and 51.4% vs. 69.4% for tet). In addition, the profiling of the present genetic determinants revealed the dominance of qnrS, tetA, tetE and tetE+qnrS genes for eel strains but of tetA+qnrS qnrS and tetE+qnrS genes for ornamental fish strains. These results indicate that aquaculture and related industries could be a major threat to public health due to the possible spread of PMAR.

Keywords

Acknowledgement

This research was supported by research funds of Jeonbuk National University in 2022.

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