杂交鲟嗜水气单胞菌病的组织病理学研究  

Pathological observation of hybrid strugeon infected with Aeromonas hydrophila

作　　者：徐祥[1] 李华[1] 叶仕根[1] 李强[1] 

机构地区：[1]大连海洋大学农业部北方海水增养殖重点实验室,辽宁大连116023

出　　处：《大连海洋大学学报》2014年第3期227-231,共5页Journal of Dalian Ocean University

基　　金：国家"十二五"科技支撑计划项目(2011BAD13B03)

摘　　要：对自然感染和人工感染嗜水气单胞菌Aeromonas hydrophila的杂交鲟(达氏鳇Huso dauricus Georgi♀×史氏鲟Acipenser schrencki Brandt♂)的组织病理和超微病理变化进行了研究。结果表明:患嗜水气单胞菌病的杂交鲟体表黏液稍增多,鳍基部和腹部轻微发红,鳃丝腐烂、色浅或呈紫黑色,腹腔壁及内脏器官可见出血斑;肝、肾、脾等内脏器官组织病理变化主要表现为循环障碍,微血管扩张,广泛出现充血、出血或溶血;实质细胞经变性发展到坏死,严重时出现弥散性坏死灶。电镜观察显示,病鲟肝、脾、肾组织和细胞内感染大量短杆状细菌,细胞内线粒体普遍发生肿胀、膨大,严重时其嵴状结构消失或溶解。The pathological and ultra-pathological observation were conducted in hybrid strugeon（ Huso dauricus Georgi♀ × Acipenser schrencki Brandt♂） infected with Aeromonas hydrophila naturally and artificially.The infected sturgeon exhibited slight mucus increase and reddish in color in the abdomen and fin bases,and the gills showed anaemia or congestive and rotted.Some petechial heamorrhagy was observed on abdominal cavity walls and internal organs.The main pathological changes were congestion,heamorrhagy,hemolysis,anemia,micro vessel expansion and circulation dysfunction in internal organs including liver,kidney and spleen.Parenchymal cells were developed from degeneration into conspicuous necrosis in the internal organs,even some diffuse necrotic foci in severe case.The electronic microscopy revealed that there was a large number of short rod bacteria in the cells of internal organs,and swollen and enlarged mitochondria,even lysis of mitochondrial cristae in severe case.

关 键 词：杂交鲟 嗜水气单胞菌病 组织病理 超微病理 

分 类 号：S941[农业科学—水产养殖]