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. 2010 Feb;76(4):1290-3.
doi: 10.1128/AEM.00861-09. Epub 2009 Dec 18.

Correlation between environmental factors and prevalence of Vibrio parahaemolyticus in oysters harvested in the southern coastal area of Sao Paulo State, Brazil

Paulo de Souza Costa Sobrinho  1 , Maria T Destro, Bernadette D G M Franco, Mariza Landgraf
Affiliations

Correlation between environmental factors and prevalence of Vibrio parahaemolyticus in oysters harvested in the southern coastal area of Sao Paulo State, Brazil

Paulo de Souza Costa Sobrinho et al. Appl Environ Microbiol. 2010 Feb.

Abstract

The presence of Vibrio parahaemolyticus in 123 oyster samples collected from an estuary on the southern coast of Sao Paulo state, Brazil, was investigated. Of the 123 samples, 99.2% were positive with densities ranging from < 3 to 10(5) most probable number (MPN)/g. Densities correlated significantly with water temperature (r = 0.48; P < 0.001) but not with salinity (r = -0.09; P = 0.34). The effect of harvest site on counts was not significant (P > 0.05). These data provide information for the assessment of exposure of V. parahaemolyticus in oysters at harvest.

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Figures

FIG. 1.
FIG. 1.
Locations of oyster bed sites in the Cananeia estuary on the southern coast of Sao Paulo state, Brazil. (Courtesy of E. E. de Miranda and A. C. Coutinho [Embrapa Monitoramento por Satélite] [http://www.cdbrasil.cnpm.embrapa.br].)
FIG. 2.
FIG. 2.
Total densities of Vibrio parahaemolyticus in oysters from the southern coast of Sao Paulo state, Brazil. Each bar or point represents the arithmetic mean of six sites, and each error bar represents the standard deviation.
FIG. 3.
FIG. 3.
Goodness of fit regression model of V. parahaemolyticus density in oysters and water temperature.
FIG. 4.
FIG. 4.
Relationship between the mean density of V. parahaemolyticus in oysters and seawater temperature in Cananeia estuary, Sao Paulo state, Brazil.
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