溶解氧和氨对Culter alburnus的影响:生理学,生物化学和分子分析
Cheng Shun1, Jiang Wen-Ping1, Liu Shi-Li1
1Zhejiang Institute of Freshwater Fisheries, Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture/Key Laboratory of Freshwater Aquatic Animal Genetic and Breeding of Zhejiang Province, Huzhou Zhejiang, 313001, China.
Heliyon
|April 4, 2024
概括
溶解的氧气 (DO) 和氨 (AN) 显著影响顶口培养物的生理和生物化学. 保持最佳的DO和AN水平对于这种有价值的淡水鱼的成功工业养殖至关重要.
科学领域:
- 水生物质毒理学研究
- 鱼类生理学 鱼类生理学
- 分子生物学分子生物学
背景情况:
- 顶口 (Culter alburnus) 是一个经济上重要的淡水鱼类.
- 对溶解氧 (DO) 和氨 (AN) 的受容性有限,限制了其水产养殖工业化.
- 了解对DO和AN压力的生理,生化和分子反应至关重要.
研究的目的:
- 为了研究不同水平的溶氧 (DO) 和氨 (AN) 对Culter alburnus的影响.
- 分析对缺氧和氨压力的生理,生化和分子反应.
- 确定C. alburnus生存和健康的关键DO和AN值.
主要方法:
- 对C. alburnus进行实验,对DO (0.70-6.50 mg/L) 和AN (0.8,16 mg/L) 的受控水平进行暴露.
- 评估生理参数,包括临界氧点和生存率.
- 抗氧化酶活性的生物化学分析和基因表达模式的分子分析.
主要成果:
- 与30°C相比,较低的温度 (20°C) 显示出更高的临界氧点.
- 氧气消耗率随着温度的增加而增加;AN的96小时LC50为24.13 mg/L,安全度为2.41 mg/L.
- 低氧和高AN应激诱导了抗氧化酶活性和差异性基因表达的显著变化,主要涉及ABC转运器和代谢途径.
结论:
- 溶解的氧气和氨水平极大地影响了C. alburnus的生理和生化状态.
- 与ABC载体,类固醇生物合成和氨基酸代谢相关的特定基因是压力的关键分子指标.
- 仔细管理DO和AN对于优化C. alburnus水产养殖和工业化至关重要.
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