| 黄颡鱼源柱状黄杆菌的分离鉴定及其对翘嘴鳜的致病性 |
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| 引用本文： | 张玉蕾,赵丽娟,周伟东,艾桃山,林蠡.黄颡鱼源柱状黄杆菌的分离鉴定及其对翘嘴鳜的致病性[J].华中农业大学学报,2016,35(2):83-89. |
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| 作者姓名： | 张玉蕾 赵丽娟 周伟东 艾桃山 林蠡 |
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| 作者单位： | 1. 华中农业大学水产学院,武汉,430070;2. 山东省淡水渔业研究院,济南,250013;3. 武汉市水产科学研究所,武汉,430207 |
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| 基金项目： | 湖北省科技支撑计划项目（2015-241）； 高校自主创新基金项目（2013PY069, 2014PY035） |
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| 摘 要： | 从患病黄颡鱼上分离出1株柱状黄杆菌(Pf1),对其进行分类鉴定和药物敏感试验。用Pf1感染黄颡鱼和翘嘴鳜,发现Pf1对2种鱼均有致病性。Pf1可导致翘嘴鳜多个组织细胞坏死和炎症反应,严重损伤肝、体肾和鳃。被感染翘嘴鳜肝细胞肿胀、空泡化坏死;肾小管广泛坏死和大量炎症细胞浸润;鳃小片毛细血管充血,呼吸上皮细胞肿胀变性,鳃的呼吸功能衰退。鳃部病变导致感染鳜呼吸频率加快、游动缓慢,最后大量死亡。
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| 关 键 词： | 柱状黄杆菌 黄颡鱼 翘嘴鳜 致病性 组织病理 |
| 收稿时间： | 2015/7/26 0:00:00 |
Characterization and pathogenicity of a strain of Flavobacterium columnare isolated from Pelteobagrus fulvidraco |
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| Abstract: | In this report, we isolated and identified a strain of Flavobacterium columnare (named Pf1 strain) from a diseased yellow Chinese catfish, Pelteobagrus fulvidraco. Subsequently, the drug sensitive tests and the pathogenicity of Pf1 on yellow Chinese catfish and mandarin fish (Siniperca chuatsi) were carried out and the results showed that Pf1 was pathogenic. Pf1 infection could cause necrosis and inflammation of several tissues, especially the liver, trunk kidney and gill in mandarin fish. In the infected mandarin fish, liver cells were swollen, vacuolar and necrotic. Necrosis of renal tubular and extensive inflammatory cells infiltration were observed. Gill lamellae capillaries were swollen and hyperemic, and respiratory epithelia were swollen and degenerated. The lesioned gill lead to the higher breathing rate, slower swimming, and eventually mass mortality of the infected mandarin fish. |
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| Keywords: | Flavobacterium columnare Pelteobagrus fulvidraco Siniperca chuatsi pathogenicity histopathology |
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