在鱼类中发生疹病毒的发生
Sven Michael Bergmann1,2, Yingying Wang3, Yingying Li3
1Friedrich-Loeffler-Institut, Greifswald, Germany.
Journal of veterinary research
|March 25, 2024
概括
水生疹病毒通常感染鱼类,一些物种作为无症状携带者. 这项研究确定了草 (CyHV-5) 中的新型疹病毒,并证实了其他鱼类中现有的菌株,突出显示了病毒的适应性.
科学领域:
- 水生病毒学 水生病毒学.
- 鱼类免疫学 鱼类免疫学
- 分子生物学分子生物学
背景情况:
- 疹病毒在水生环境中普遍存在,经常在不引起疾病的情况下感染鱼类.
- 无症状的受感染鱼类可以将病毒传播给易受感染的物种,对水产养殖造成重大风险.
- 了解水生疹病毒的多样性和宿主范围对于预防疾病至关重要.
研究的目的:
- 为了识别和确认不同鱼类物种中各种疹病毒的自然存在.
- 调查实验性引入的Cyprinid Herpesvirus 2 (CyHV-2) 的易感性和复制性.
- 在养殖鱼群中检测到的新型疹病毒的特征.
主要方法:
- 五种鱼类 (科伊,尼罗河鱼,草鱼,金鱼,鱼) 经过实验感染了一种CyHV-2分离物.
- 在感染前和感染后取下囊和白细胞的非致命样本.
- 聚合酶链反应 (PCR) 和序列分析用于病毒DNA检测和识别.
主要成果:
- 科伊疹病毒 (KHV,CyHV-3) DNA 在鱼和金鱼中检测到.
- 在鱼和鱼中发现了CyHV-2DNA.
- 在草鱼中发现了一种新型的疹病毒,被指定为Cyprinid Herpesvirus 5 (CyHV-5).
- 感染后的生存率在各个物种之间存在显著差异.
- 遗传学分析揭示了五个不同的群体,包括新的CyHV-5.
结论:
- 水生疹病毒表现出广泛的宿主感染能力,影响多种鱼类.
- 感染可能会随着或没有可观察到的临床症状或死亡发生.
- 鉴定CyHV-5扩大了我们对水生疹病毒多样性和演变的了解.
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