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首页> 美国卫生研究院文献>Applied and Environmental Microbiology >Rapid Proliferation of Vibrio parahaemolyticus Vibrio vulnificus and Vibrio cholerae during Freshwater Flash Floods in French Mediterranean Coastal Lagoons
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Rapid Proliferation of Vibrio parahaemolyticus Vibrio vulnificus and Vibrio cholerae during Freshwater Flash Floods in French Mediterranean Coastal Lagoons

机译：法国地中海沿岸泻湖淡水暴洪期间副溶血性弧菌创伤弧菌和霍乱弧菌的快速增殖

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摘要

Vibrio parahaemolyticus, Vibrio vulnificus, and Vibrio cholerae of the non-O1on-O139 serotype are present in coastal lagoons of southern France. In these Mediterranean regions, the rivers have long low-flow periods followed by short-duration or flash floods during and after heavy intense rainstorms, particularly at the end of the summer and in autumn. These floods bring large volumes of freshwater into the lagoons, reducing their salinity. Water temperatures recorded during sampling (15 to 24°C) were favorable for the presence and multiplication of vibrios. In autumn 2011, before heavy rainfalls and flash floods, salinities ranged from 31.4 to 36.1‰ and concentrations of V. parahaemolyticus, V. vulnificus, and V. cholerae varied from 0 to 1.5 × 103 most probable number (MPN)/liter, 0.7 to 2.1 × 103 MPN/liter, and 0 to 93 MPN/liter, respectively. Following heavy rainstorms that generated severe flash flooding and heavy discharge of freshwater, salinity decreased, reaching 2.2 to 16.4‰ within 15 days, depending on the site, with a concomitant increase in Vibrio concentration to ca. 104 MPN/liter. The highest concentrations were reached with salinities between 10 and 20‰ for V. parahaemolyticus, 10 and 15‰ for V. vulnificus, and 5 and 12‰ for V. cholerae. Thus, an abrupt decrease in salinity caused by heavy rainfall and major flooding favored growth of human-pathogenic Vibrio spp. and their proliferation in the Languedocian lagoons. Based on these results, it is recommended that temperature and salinity monitoring be done to predict the presence of these Vibrio spp. in shellfish-harvesting areas of the lagoons.
机译：非O1 /非O139血清型的副溶血弧菌，创伤弧菌和霍乱弧菌存在于法国南部的沿海泻湖中。在这些地中海地区，河流在漫长的低暴雨期间和之后，特别是在夏季末和秋季，河流长期处于低流量状态，随后出现短时洪水或山洪。这些洪水将大量淡水带入泻湖，降低了盐度。采样期间记录的水温（15至24°C）有利于弧菌的存在和繁殖。 2011年秋天，在暴雨和山洪暴发之前，盐度范围为31.4至36.1‰，副溶血弧菌，创伤弧菌和霍乱弧菌的浓度变化范围最大为0至1.5×10 3 数量（MPN）/升，分别为0.7至2.1×10 3 MPN /升，以及0至93 MPN /升。在暴雨造成严重的山洪暴发和大量淡水排放之后，盐度下降，在15天之内，根据地点的不同，盐度降低至2.2到16.4‰，同时弧菌浓度也随之升高至大约。 10 4 MPN /升。副溶血弧菌达到最高浓度，盐度弧菌为10至20‰，外伤弧菌为10至15‰，霍乱弧菌为5至12‰。因此，由于暴雨和大洪水造成的盐度突然下降，有利于人类致病性弧菌的生长。并在朗格多克泻湖中扩散。根据这些结果，建议进行温度和盐度监测以预测这些弧菌的存在。在泻湖的贝类收获地区。

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