Abstract
The aim of this study was to determine the prevalence of Vibrio parahaemolyticus in shellfish samples harvested along the Slovenian coast. Shellfish samples of Mediterranean mussels (Mytilus galloprovincialis) were collected along the Slovenian coast at four locations (Seča, Piran, Strunjan and Debeli Rtič) between 2006 and 2008. Samples were examined and analysed for the presence of V. parahaemolyticus by conventional and molecular methods. The presence of Vibrio in the samples was examined by conventional methods on plate grown bacterial cells before and after enrichment in alkaline saline peptone water (ASPW). PCR methods were used for the detection of V. parahaemolyticus-specific toxR and tlh genes and of the virulence-associated tdh and trh genes. Out of 168 samples examined, 24 were positive for toxR and tlh genes by PCR from enrichment broth. Five out of 62 (8.1%), 4 out of 32 (12.5%) and 15 out of 74 (20.2%) samples were positive in 2006, 2007 and 2008, respectively. Colonies of V. parahaemolyticus were isolated from only one sample positive for V. parahaemolyticus by PCR.
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