Virulence, resistance, and genetic diversity of Vibrio parahaemolyticus recovered from commonly consumed aquatic products in Shanghai, China

Vibrio parahaemolyticus can cause severe gastroenteritis, septicaemia and even death in humans. Continuous monitoring of V. parahaemolyticus contamination in aquatic products is imperative for ensuring food safety. In this study, we isolated and characterized 561 V. parahaemolyticus strains recovere...

Full description

Saved in:
Bibliographic Details
Published in:Marine pollution bulletin 2020-11, Vol.160, p.111554-111554, Article 111554
Main Authors: Su, Chenli, Chen, Lanming
Format: Article
Language:English
Subjects:
Antibiotic susceptibility
Aquatic product
Genetic diversity
Heavy metal tolerance
Vibrio parahaemolyticus
Virulence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Vibrio parahaemolyticus can cause severe gastroenteritis, septicaemia and even death in humans. Continuous monitoring of V. parahaemolyticus contamination in aquatic products is imperative for ensuring food safety. In this study, we isolated and characterized 561 V. parahaemolyticus strains recovered from 23 species of commonly consumed shellfish, crustaceans, and fish collected in July and August of 2017 in Shanghai, China. The bacterium was not isolated from two fish species Carassius auratus and Parabramis pekinensis. The results revealed a very low occurrence of pathogenic V. parahaemolyticus carrying the toxin genes trh (0.2%) and tdh (0.0%). However, high percentages of resistance to the antimicrobial agents ampicillin (93.0%), rifampin (82.9%), streptomycin (75.4%) and kanamycin (50.1%) were found. A high incidence of tolerance to the heavy metals Hg2+ (74.7%) and Zn2+ (56.2%) was also observed in the isolates. ERIC-PCR-based fingerprinting of MDR isolates (77.5%) revealed 428 ERIC-genotypes, demonstrating remarkable genetic variation among the isolates. The results of this study support the urgent need for food safety risk assessment of aquatic products. •A very low occurrence of pathogenic V. parahaemolyticus (trh, 0.2%) in 561 isolates•High percentages of resistance to antimicrobial agents AMP, RIF, STR, and KAN•High incidence of tolerance to heavy metals Hg2+, and Zn2+•Different resistance profiles among 23 species and 3 kinds of aquatic products•Divergent ERIC-genotypes of the V. parahaemolyticus isolates
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2020.111554