美国墨西哥湾沿岸鱼类肠道中创伤弧菌的密度。
Densities of Vibrio vulnificus in the intestines of fish from the U.S. Gulf Coast.
作者信息
DePaola A, Capers G M, Alexander D
机构信息
Gulf Coast Seafood Laboratory, U.S. Food and Drug Administration, Dauphin Island, Alabama 36528.
出版信息
Appl Environ Microbiol. 1994 Mar;60(3):984-8. doi: 10.1128/aem.60.3.984-988.1994.
Densities of Vibrio vulnificus in the intestinal contents of various finfish, oysters, and crabs and in sediment and waters of the U.S. Gulf Coast were determined by the most probable number procedure. Species were identified by enzyme immunoassay. During the winter, densities of V. vulnificus were low, and the organism was isolated more frequently from sheepshead fish than from sediment and seawater. From April to October, V. vulnificus densities were considerably higher (2 to 5 logs) in estuarine fish than in surrounding water, sediment, or nearby oysters and crustacea. Highest densities were found in the intestinal contents of certain bottom-feeding fish (10(8)/100 g), particularly those that consume mollusks and crustaceans. Densities of V. vulnificus in fish that feed primarily on plankton and other finfish were similar to those in oysters, sediment, and crabs (10(5)/100 g). V. vulnificus was found infrequently in offshore fish. The presence of high densities of V. vulnificus in the intestines of common estuarine fish may have both ecological (growth and transport) and public health (food and wound infections) implications.
采用最大可能数法测定了美国墨西哥湾沿岸各种有鳍鱼类、牡蛎和螃蟹的肠道内容物以及沉积物和水体中创伤弧菌的密度。通过酶免疫测定法鉴定菌种。冬季，创伤弧菌密度较低，从羊头鱼中分离出该菌的频率高于从沉积物和海水中分离出的频率。从4月到10月，河口鱼类中创伤弧菌的密度（高2至5个对数）显著高于周围水体、沉积物或附近的牡蛎和甲壳类动物。在某些底栖鱼类的肠道内容物中发现了最高密度（10⁸/100克），特别是那些以软体动物和甲壳类动物为食的鱼类。主要以浮游生物和其他有鳍鱼类为食的鱼类中创伤弧菌的密度与牡蛎、沉积物和螃蟹中的密度相似（10⁵/100克）。在近海鱼类中很少发现创伤弧菌。常见河口鱼类肠道中高密度创伤弧菌的存在可能对生态（生长和传播）和公共卫生（食物和伤口感染）都有影响。
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