Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Antimicrobial Resistance in Escherichia coli Isolated from Oyster Crassostrea gigas and Inland Pollution Sources in the Yongnam-Gwangdo Area, Korea

용남광도 해역의 굴(Crassostrea gigas) 및 육상오염원에서 분리한 대장균(Escherichia coli)의 항생제 내성

  • Kwon, Soon Jae (Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Jung, Yeoun Joong (Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Yoon, Hyun Jin (Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Mok, Jong Soo (Food Safety and Processing Research Division, National Institute of Fisheries Science) ;
  • Kwon, Ji Young (Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science)
  • 권순재 (국립수산과학원 남동해수산연구소) ;
  • 정연중 (국립수산과학원 남동해수산연구소) ;
  • 윤현진 (국립수산과학원 남동해수산연구소) ;
  • 목종수 (국립수산과학원 식품위생가공과) ;
  • 권지영 (국립수산과학원 남동해수산연구소)
  • Received : 2018.11.20
  • Accepted : 2018.12.20
  • Published : 2018.12.31
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Abstract

We isolated and characterized Escherichia coli (E. coli) from oyster Crassostrea gigas and inland pollution sources on Yongnam-Gwangdo island and neighboring areas on the southern coast of Korea in 2014-2015. A total of 222 strains of E. coli were isolated from 132 oysters and 88 samples from inland pollution sources. These 222 isolates were tested for their susceptibility to 24 antimicrobial agents, and 221 isolates were found resistant to the tested antibiotics. Of these 99.5% and 70.7% of the isolates showed very high resistance to rifampin and cephalothin respectively, followed by tobramycin (23.4%), streptomycin (20.2%), tetracycline (19.4%), cefepime (18.9%), ceftazidime (18.9%) and nalidixic acid (16.7%). The resistance rate of E. coli isolated from oysters was higher than that from inland pollution sources. In addition, multiple resistance to at least four antibiotics were present in 73.2% and 26.5% of E. coli isolates from oysters and inland pollution source samples, respectively.

Keywords

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Fig. 1. Sampling stations of oyster Crassostrea gigas (●) and inland pollution sources (■) in the Yongnam-Gwangdo area, Korea.

Table 1. Number of E. coli isolated from oyster Crassostrea gigas and inland pollution sources in the Yongnam-Gwangdo area

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Table 2. Antimicrobial resistance of E. coli isolated in the Yongnam-Gwangdo area

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Table 3. Antimicrobial resistance of E. coli isolated from oyster Crassostrea gigas and inland pollution sources in Yongnam-Gwangdo area

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Table 4. Multiple antimicrobial resistance of E. coli isolated from oyster Crassostrea gigas in Yongnam-Gwangdo Area

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Table 5. Multiple antimicrobial resistance of E. coli isolated from inland pollution source in Yongnam-Gwangdo Area

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Table 5. Continued

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