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Zhongmeng Zhao¹, Han Zhao¹, Xiongyan Wang²

¹Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China.

Scientific reports

|March 27, 2024

概括

温度变化会对养殖鱼类造成伤害. 寒冷和热压伤害了状组织,改变了Leiocassis longirostris的肠道微生物群,影响了宿主适应和生存. 寒冷压力有更大的影响.

科学领域:

水生生物学水生生物学
鱼类生理学鱼类生理学
微生物组研究微生物组研究

背景情况:

鱼类是波基热热的,这使得它们对水温波动敏感.
极端天气事件越来越多地影响养殖鱼类的生长和生存.
了解鱼类对温度的生理反应对于水产养殖至关重要.

研究的目的:

为了研究低 (4°C),正常 (26°C) 和高 (32°C) 水温对Leiocassis longirostris组织的影响.
分析肠道微生物群与热应激下宿主适应之间的关系.
评估温度压力对鱼类健康和生存机制的影响.

主要方法:

检查了部组织段,以评估结构变化.
进行了肠道微生物16SrRNA安普利康序列测序.
在不同温度组中对状组织学和肠道微生物组合的比较分析.

主要成果:

无论是热压还是冷压都会引起状组织损伤,包括胀,拥堵,真空化和亡.
温度压力显著改变了肠道微生物群结构,特定的类 (Pseudomonadota, Bacillota, Fusobacteriota, Bacteroidota) 显示出差异性的丰度.
微生物群的丰富性下降,而在压力下均性增加;关键的代谢功能也受到损害.

结论:

水温的变化会对L. longirostris.的状结构和肠道微生物群的恒温产生负面影响.
热应激会影响宿主适应机制,影响鱼类的生存.
与热应激相比,冷应激对L. longirostris产生了更明显的负面影响.

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