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Updated: May 12, 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
Hemolytic and urease activities in vibrios isolated from fresh and frozen oysters
Renata Albuquerque Costa1, Rayza Lima Araújo, Regine Helena Silva dos Fernandes Vieira
1Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Fortaleza, CE, Brasil. renata.albuq@gmail.com
Introduction:
The present study aimed to survey the Vibrio microbiota of oysters (Crassostrea rhizophorae) obtained from restaurants in Fortaleza, State of Ceará, Brazil, and to identify virulence factors.
Methods:
The isolated vibrios were submitted to biochemical identification and were tested for hemolytic and urease activities.
Results:
The isolated strains belonged to 13 species, with predominance of Vibrio mimicus. Of the strain isolates only from fresh samples, 20.5% and 2.8% showed hemolytic and urease activities, respectively.
Conclusions:
The findings support the little-publicized claim that Vibrio species other than V. parahaemolyticus and V. vulnificus can represent a health risk to public health.
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