温度驱动的死亡率和TiLV在尼罗河鱼中的环境泄露的变化
Jidapa Yamkasem1, Montakarn Sresung1,2, Supitchaya Theplhar1,2
1Department of Physiology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand.
Journal of fish diseases
|February 3, 2026
概括
水温显著影响着鱼湖病毒 (TiLV) 感染. 像28°C这样的最佳温度增加了死亡率,而较冷或较温暖的条件减少了TiLV在水产养殖中的传播和严重程度.
科学领域:
- 水生动物卫生 水生动物卫生
- 病毒学 病毒学
- 环境科学 环境科学
背景情况:
- 水温是水产养殖疾病动态的一个关键因素.
- 鱼湖病毒 (TiLV) 是对全球鱼生产的新兴威胁.
- 温度在TiLV病变和脱落中的确切作用尚未完全理解.
研究的目的:
- 为了研究尼罗河鱼中TiLV感染的温度依赖性影响.
- 评估在不同温度下TiLV病变,复制和传播动态.
- 评估直接和间接共存模型在理解TiLV传播方面的有效性.
主要方法:
- 尼罗河鱼被TiLV感染,并保持在三个受控制的水温下 (24°C,28°C,32°C).
- 直接和间接的同居模型被用来模拟疾病传播场景.
- 监测了死亡率,水和粘液中的病毒载荷,以及感染发病率.
主要成果:
- 在28°C时观察到的死亡率和病毒载荷最高,温度反应非单调.
- 24°C导致感染延迟,病毒分泌率降低,同居者死亡率最低.
- 与直接同居相比,间接的同居始终降低了传播和死亡率.
- 在水和粘液中的TiLV度作为死亡率高峰之前的早期预警指标.
结论:
- 固定的水温显著影响着鱼的死亡率和TiLV脱落动态.
- 了解热制对于管理水产养殖中的TiLV爆发至关重要.
- 环境监测,特别是水温和病毒载荷指标,对于TiLV控制策略至关重要.
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