作为源或槽的鱼类种群:受营养和代谢变化的影响,而不仅仅是饮食含量和石化度
Koushik Roy1, Jaroslav Vrba2, Felix K A Kuebutornye1
1University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of Waters, České Budějovice 370 05, Czech Republic.
The Science of the total environment
|May 30, 2024
概括
鱼类作为矿或基于饮食摄入量的源. 氨酸,氨酸或非蛋白质能量不足会导致大量的损失,影响水生生态系统.
科学领域:
- 水生生态学 水生生态学
- 营养科学 营养科学
- 环境化学环境化学
背景情况:
- 鱼类在水生生态系统中起着至关重要的作用,影响营养循环.
- 了解鱼类中的动力学对于管理肥胖化至关重要.
- 生态固体测量为研究生物体中的营养限制提供了一个框架.
研究的目的:
- 研究鱼类 (Cyprinus carpio) 作为的来源或沉积点的条件.
- 为了确定饮食,与的比率,氨基酸含量和非蛋白质能量对分泌的影响.
- 连接鱼类营养生物能量与生态固体测量,以管理育化.
主要方法:
- 使用Cyprinus carpio作为模型生物的描述性研究.
- 在不同饮食条件下分析溶解反应 (DRP) 损失.
- 量化摄入量,干物质含量,:质量比,以及特定的氨基酸和非蛋白质能量水平.
主要成果:
- 饮食中高 (>0.83 g/100g DM) 或低N:P比 (≤4.4:1) 会增加DRP损失.
- 缺乏素 (≤1.43 g/100g DM) 或氨酸 (≤0.39 g/100g DM) 会显著增加DRP损失,即使摄入了足够的P.
- 足够的氨基酸和非蛋白质能量支持保留,有可能从水中吸收P.
结论:
- 鱼类的分泌对食成分,特别是氨基酸和能量含量非常敏感.
- 低于最佳的营养可以将鱼类从槽转移到源,从而导致肥胖化.
- 将营养生物能学与生态固体测量学相结合,为生物操纵优化过程提供了新的见解.
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