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首页> 外文期刊>Applied and Environmental Microbiology >Variability of Total and Pathogenic Vibrio parahaemolyticus Densities in Northern Gulf of Mexico Water and Oysters
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Variability of Total and Pathogenic Vibrio parahaemolyticus Densities in Northern Gulf of Mexico Water and Oysters

机译：墨西哥湾北部水域和牡蛎总溶血性和致病性副溶血性弧菌密度的变化

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摘要

Vibrio parahaemolyticus is indigenous to coastal environments and a frequent cause of seafood-borne gastroenteritis in the United States, primarily due to raw-oyster consumption. Previous seasonal-cycle studies of V. parahaemolyticus have identified water temperature as the strongest environmental predictor. Salinity has also been identified, although it is evident that its effect on annual variation is not as pronounced. The effects of other environmental factors, both with respect to the seasonal cycle and intraseasonal variation, are uncertain. This study investigated intraseasonal variations of densities of total and pathogenic V. parahaemolyticus organisms in oysters and overlying waters during the summer of 2004 at two sites in the northern Gulf of Mexico. Regression analyses indicated significant associations (P V. parahaemolyticus densities and salinity, as well as turbidity in water and in oysters at the Mississippi site but not at the Alabama site. Pathogenic V. parahaemolyticus organisms in Mississippi oyster and water samples were detected in 56% (9 out of 16) and 78% (43 out of 55) of samples, respectively. In contrast, 44% (7 out of 16) of oyster samples and 30% (14 out of 47) of water samples from Alabama were positive. At both sites, there was greater sample-to-sample variability in pathogenic V. parahaemolyticus densities than in total V. parahaemolyticus densities. These data suggest that, although total V. parahaemolyticus densities may be very informative, there is greater uncertainty when total V. parahaemolyticus densities are used to predict the risk of infection by pathogenic V. parahaemolyticus than previously recognized.
机译：副溶血性弧菌是沿海环境所固有的，并且在美国是由海鲜引起的肠胃炎的常见原因，主要是由于食用生蚝。以前对副溶血性弧菌的季节性周期研究已将水温确定为最强的环境预测因子。尽管很明显盐度对年变化的影响不那么明显，但也已被确定。在季节周期和季节内变化方面，其他环境因素的影响尚不确定。这项研究调查了2004年夏季在墨西哥湾北部两个地点的牡蛎和上层水域中的总溶菌性和致病性副溶血性弧菌的季节性变化。回归分析表明存在显着的相关性（副溶血弧菌的密度和盐度，以及密西西比州而不是阿拉巴马州的水和牡蛎的浊度。在密西西比州的牡蛎和水样中检出了致病性副溶血弧菌的生物56 ％（16个样本中的9个）和78 ％（55个样本中的43个）;相比之下，牡蛎样本为44％（16个样本中的7个）和30％（47个样本中的14个）水样本来自阿拉巴马州的血脂副溶血性弧菌的密度在两个部位均比总溶血性副溶血性弧菌的密度高，这些数据表明，尽管总溶血性副溶血性弧菌的密度可能非常有用，当使用总溶血副溶血弧菌密度预测病原性副溶血弧菌感染的风险时，不确定性要比以前认可的更大。

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