title: Hemolytic and urease activities in vibrios isolated from fresh and frozen oysters.
abstract: BACKGROUND
  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.
authors.affiliation: Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Fortaleza, CE, Brasil. renata.albuq@gmail.com
authors.forename: Renata Albuquerque
authors.initials: RA
authors.lastname: Costa
authors.forename: Rayza Lima
authors.initials: RL
authors.lastname: Araújo
authors.forename: Regine Helena Silva dos Fernandes
authors.initials: RH
authors.lastname: Vieira
mesh_terms: D000818:Animals; D005516:Food Microbiology; D057141:Food, Preserved / Q000382:microbiology; D006461:Hemolysis; D010125:Ostreidae / Q000382:microbiology*; D014510:Urease / Q000378:metabolism*; D014733:Vibrio / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism*; D037521:Virulence Factors
chemical_list: D037521:Virulence Factors; D014510:Urease