Journal of Marine Sciences ›› 2015, Vol. 33 ›› Issue (4): 77-82.DOI: 10.3969/j.issn.1001-909X.2015.04.009

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Virulence characteristics and antimicrobial susceptibility of three pathogenic bacteria isolated from the channels and ports in Ningbo and Zhoushan

GUAN Feng1,2, GAO Wei1, CHEN Ji-gang1,2, MAO Zhi-juan1,2, YANG Ji-fang*1,2   

  1. 1. Faculty of Biological & Environmental Science, Zhejiang Wanli University, Ningbo 315100, China;
    2. Municipal Key Laboratory of Microorganism and Environmental Engineering, Ningbo 315100, China
  • Received:2015-05-08 Revised:2015-05-28 Online:2015-12-15 Published:2022-11-28

Abstract: Virulence characteristics and antimicrobial susceptibility of Vibrio parahaemolyticus(VP), Vibrio alginolyticus(VA) and Aeromonas hydrophila(AH) isolated from the channels and ports in Ningbo and Zhoushan were investigated. The distribution patterns of virulent genes in isolated pathogenic bacteria are found that VP is represented by tlh+, toxR+, gyrB+ and tdh+; VA is represented by aspA+, tlh+, collagenase+ and toxS+; AH is represented by aerA+, alt+, aha1+ and hlyA+. The detection rates of relevant genes in representative strains for these three kinds of bacteria are 57.1%, 40.0%, 50.0%. 24 common kinds of drug resistance rates of representative strains are 4.17%, 8.33% and 29.17% respectively. The results show that harmful characteristics of the pathogenic bacteria are found in Ningbo-Zhoushan, and the right defense measures needed to make to prevent them. Moreover, the correlation of virulence genotypes and pathogenicity of the bacteria show that virulent genes can be chosen as gene-markers to detect pathogenic strains of bacteria.

Key words: channels and ports, pathogenic bacteria, virulent gene, antimicrobial susceptibility

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