当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY期刊下所有文献 > Comparison of plating media for recovery of total and virulent genotypes of Vibrio vulnificus in U.S. market oysters.

Comparison of plating media for recovery of total and virulent genotypes of Vibrio vulnificus in U.S. market oysters.

Abstract：

:Vibrio vulnificus is the leading cause of seafood associated mortality in the United States and is generally associated with consumption of raw oysters. Two genetic markers have emerged as indicators of strain virulence, 16S rDNA type B (rrnB) and virulence correlated gene type C (vcgC). While much is known about the distribution of V. vulnificus in oysters, a limited number of studies have addressed the more virulent subtypes. Therefore, the goals of this study were to (1) determine the suitability of media for recovery of total and virulent genotypes of V. vulnificus and (2) evaluate the geographical and seasonal distribution of these genotypes. Market oysters from across the United States and the strains isolated from them during a year-long study in 2007 were used. For media evaluation, VVA and CPC+ were compared using direct plating of oyster tissues while mCPC and CPC+ were compared for isolation following MPN enrichment. Representative isolates from each media/method were tested for rrn and vcg types to determine their seasonal and geographical distribution. No statistically significant difference was observed between VVA/CPC+ or mCPC/CPC+ for isolation of total or virulent (rrnB/vcgC) genotypes of V. vulnificus. Overall, 32% of recovered isolates possessed the virulent genotype. The prevalence of these genotypes was highest in oysters from the Gulf Coast during Oct-Dec, and demonstrated a statistically significant geographical and seasonal pattern. This is the first report on the distribution of virulent V. vulnificus genotypes across the United States, which provides novel insight into the occurrence of this pathogen.

journal_name

Int J Food Microbiol

journal_title

International journal of food microbiology

authors

Jones JL,Lüdeke CH,Bowers JC,DePaola A

doi

10.1016/j.ijfoodmicro.2013.09.017

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

322-7

issue

3

eissn

0168-1605

issn

1879-3460

pii

S0168-1605(13)00453-4

journal_volume

167

pub_type

杂志文章

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