摘要
1987年7～10月福建省平谭县对虾养殖场发生了一起严重的流行病。病虾活动力减弱,食欲下降,个体消瘦,头胸甲心区附近呈白色或浅桔红色,血淋巴液稀薄、混浊、不能凝固。因病虾步足、游泳肢及尾扇呈鲜红色,被称为“红腿病”。死亡率可高达90％以上。从五只垂死病虾的心脏血淋巴液中分离到细菌作纯焙养,经肌肉注射和浸泡的人工感染方法,得到了与虾池中患病虾相同的症状。菌原菌是革兰氏阴性短杆鼠。以极生单鞭毛运动。发酵葡萄糖,产酸不产气。氧化酶、过氧化氢酶阳性。能还原硝酸盐成亚硝酸盐。精氨酸脱羧;鸟氨酸、赖氨酸不脱羧。V.P.阳性.在42℃中不能生长。不能在无盐和含有8％NaCl 的胨水中生长,但在含有3％和6％NaCl的胨水中生长良好。对弧菌抑制剂0/129敏感。经鉴定为鳗弧菌(Vibrio anguillarum Bergman)。
From July to October in 1987 an epizootic disease occurred in theprawn farm of Pingtan island, Fujian Province. The acute infected disease wasdescribed as 'red leg disease' locally, which was characterized by heart and nearbyregion becoming light orange, pleopods red and swimming activity reducing. Thekemolyph drawn from heart of diseased shrimp was thin, turbid and unclottable.The mortality due to this disease was over 90% in shrimp stock. Five strains wereisolated from hemolymph of moribund shrimps. Infection experiments ascertainedthat the bacterial isolates were the cause of the disease. All bacterial isolates showed Gram-negative short rods with a single polarflagellum. They produced acid but no gas from glucose. Moreover, they were oxida-se-positive and could not grow in peptone water lacking NaCl or containing 8%NaCl, or at 42℃. But they grew well in peptone water containing 3 or 6% NaCl.Test for the decarboxylation of lysine and ornithine were negative and argininepositive. All strains were sensitive to vibriostatic agent 0/129. The organisms were identified as Vibrio anguillarum, which was first reported in China as the causativeagent of prawn disease.
出处
《水产学报》
CAS
CSCD
北大核心
1990年第1期1-7,共7页
Journal of Fisheries of China
关键词
中国对虾
弧菌病
鳗弧菌
Penaeus orientalis
Vibrio anguillarum
vibriosis
