论文部分内容阅读
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 1987, a serious epidemic occurred in Pingtang County shrimp farm in Fujian Province. Shrimp shrimp decreased activity, loss of appetite, individual weight loss, head and chest area near the heart was white or light orange, hemolytic thin, cloudy, can not coagulation. Due to sick prawn foot, swimming limbs and tail fan was bright red, known as “red leg disease.” Mortality can be as high as 90% or more. Bacteria were isolated from the heart hemolymph of five dying shrimps and were purely bred, then injected intramuscularly and soaked in the artificial infection method to obtain the same symptoms as the diseased shrimp in the shrimp ponds. Strains of bacteria are Gram-negative short rod rats. Take polar flagella movement. Fermentation of glucose, acid gas does not produce gas. Oxidase, catalase positive. Nitrite can be reduced to nitrite. Arginine decarboxylation; ornithine, lysine not decarboxylated. V.P. positive can not grow at 42 ° C. Can not grow in salt-free and peptone water containing 8% NaCl, but grow well in peptone water containing 3% and 6% NaCl. Vibrio suppressor 0/129 sensitive. It was identified as Vibrio anguillarum Bergman.