Aeromonas spp. are opportunistic pathogens which cause diseases in ornamental fish. But the degree of infection and the severity of disease caused by various Aeromonas spp. are generally being reported to be strain specific. Therefore, the present study focused on the disease induction ability of previously isolated Aeromonas veronii XhG1.2 in Xiphophorus hellerii in comparison with A. hydrophila (MTCC 1739). Further, the ability of A. veronii XhG1.2 to cause disease in other selected ornamental fish such as Poecilia sphenops (molly), Carassius auratus (goldfish) and Cyprinus carpio (common carp) has also been studied. Here, the intramuscular injection of A. veronii XhG1.2 was observed to cause disease incidence and increased mortality in all the selected ornamental fish. The mortality observed was 100, 100 and 88.3%, respectively, for P. sphenops, C. auratus and C. carpio within the 48-h period. Histopathological analysis of gill, liver and intestine of all the XhG1.2 treated fish further confirmed its role in fish disease. The results of the study are indicative of emergence of Aeromonas spp. with the ability to cause disease in wide range of ornamental fish.

中文翻译：

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从剑齿鱼中分离的维罗气单胞菌 XhG1.2 对选定观赏鱼的疾病诱导潜力

气单胞菌属 是引起观赏鱼疾病的机会性病原体。但是各种气单胞菌引起的感染程度和疾病的严重程度。一般被报道为菌株特异性的。因此，本研究集中在先前分离的疾病诱导能力气单胞菌 维罗纳在XhG1.2剑尾鱼 hellerii使用比较阿。亲水（MTCC 1739）。此外，A的能力。veronii XhG1.2 在其他选定的观赏鱼中引起疾病​​，例如Poecilia sphenops (molly)、Carassius auratus（金鱼）和Cyprinus carpio（鲤鱼）也进行了研究。在这里，肌内注射A。观察到veronii XhG1.2 会导致所有选定观赏鱼的发病率和死亡率增加。对于P观察到的死亡率分别为 100、100 和 88.3% 。sphenops , C . auratus和C . 鲤鱼在 48 小时内。所有经 XhG1.2 处理的鱼的鳃、肝脏和肠的组织病理学分析进一步证实了其在鱼类疾病中的作用。研究结果表明气单胞菌的出现属 具有在多种观赏鱼中引起疾病​​的能力。