方斑东风螺“急性死亡症”的病原病理研究

Pathogen and pathology of "acute death syndrome" of Babylonia areolata

对海南发生的方斑东风螺(Babylonia areolata)"急性死亡症"进行了病原分离纯化、人工感染试验,以及病原16S rDNA分析和生理生化鉴定。结果显示病原菌为哈维弧菌(Vibrio harveyi);药敏试验结果显示,该病原菌对常见的抗菌药物如恩诺沙星、复合磺胺等敏感,而对青霉素表现为耐药;组织病理结果显示鳃叶、腹足、肝胰腺、消化道、肾等器官的细胞出现变性、坏死、血细胞浸润等现象。

The pathogens of Babylonia areolata ＂ acute death syndrome＂ in Hainan were isolated and purified, artificially infected, 16S rDNA analized, and physiological and biochemical characteristics identificated. The results show that the pathogen is Vibrio har- veyi. Drug sensitivity test results show that the pathogen is sensitive to the common antibiosis drugs such as enrofloxacin, sulfa, but resistant to penicillin. Pathological changes in the gill, hepatopancreas, gastropods, digestive tract and kidney are as follows： cell degeneration, necrosis, and blood cell infihration.