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he xie yu miao zhong hu jun bing fang zhi de tan tao
Author(s): 
Pages: 40-41
Year: Issue:  2
Journal: China Fisheries

Keyword:  河蟹育苗弧菌病病防治幼体变态率大眼幼体显微镜检查江苏盐城市青霉素氯霉素用药方法;
Abstract: 弧菌在海洋中广泛存在,在海水养殖和育苗中致病的种类属于革兰氏阴性兼性厌氧细菌,弧菌科(Vibrionaceae)、弧菌属(Vibrio),弧菌病已给以对虾养殖为代表的海水养殖业造成沉重的打击。近几年,弧菌病又蔓延到河蟹育苗中,由于人们对其认识不足,往往给正在兴起的河蟹育苗业造成严重灾害。一、病症观察河蟹育苗中弧菌病的发病往往是广泛性的,其蔓延速度快,危害广,死亡期集中,死亡速度快,一个育苗场经常发生一茬苗中全部育苗地同时发病的现象。弧菌病发作时间通常在Z1变Z2时期,Z1在孵化后第2天开始出现幼体摄食不足,活力和趋光能力下降;第3天变态前用取样瓶观察会发现水中粪便减少,幼体对丰年虫或轮虫的捕捉
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