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Updated: May 27, 2026

Development of a More Sensitive and Specific Chromogenic Agar Medium for the Detection of Vibrio parahaemolyticus and Other Vibrio Species
Published on: November 8, 2016
Genetic and phylogenetic evidence for misidentification of Vibrio species within the Harveyi clade
M Hoffmann1, S R Monday, M Fischer
1US Food and Drug Administration, Paint Branch Parkway, 5100 Paint Branch Parkway, College Park, MD 20740, USA. maria.hoffman@fda.hhs.gov
Aim:
This report describes the use of a six-gene multi-locus sequence analysis (MLSA) to correctly identify Vibrio strains of the Harveyi clade.
Methods And Results:
Vibrio isolates were characterized using a six housekeeping gene MLSA. The study provided evidence supporting: (i) a substantial number of reference strains maintained within commercial culture collections are misidentified taxonomically at the species level; (ii) two V. alginolyticus subclades retain species-level divergence; and (iii) V. communis and V. owensii likely are the same species.
Conclusion:
A significant number (n = 10) of Harveyi clade Vibrio strains have been inaccurately identified, including evidence that V. communis and V. owensii strains, two recently discovered species assigned to the Harveyi clade, comprise a single species.
Significance And Impact Of The Study:
As Harveyi clade vibrios have an enormous impact on human and aquatic animal health, it is of paramount importance to identify members of the Harveyi clade correctly.
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