饮食成分对肠道微生物组和生物转化在鱼中的影响
Bingxin Yin1, Sha Tan2, Ke Pan3
1College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
The Science of the total environment
|June 11, 2023
概括
饮食成分显著影响鱼的肠道微生物,影响 (Hg) 水平. 自然的猎物饮食促进了脱甲基,减少了MeHg在鱼中的积累,与人工料不同.
科学领域:
- 环境科学 环境科学
- 水生毒理学 水生毒理学
- 微生物学 微生物学
背景情况:
- 鱼类中的 (Hg) 变种受生物转化过程的影响,如甲基化和脱甲基化.
- 肠道微生物群在鱼体内的Hg生物转化中起着至关重要的作用.
- 饮食成分显著影响肠道微生物群,但其对Hg生物转化的影响还未得到充分研究.
研究的目的:
- 在不同的饮食条件下 (天然猎物与人工食物) 调查鱼 (Mugilogobius chulae) 的Hg生物转化和生物积累.
- 评估肠道微生物组在调解Hg生物转化中对饮食的反应中的作用.
主要方法:
- 鱼被食自然猎物 (盐水) 或人工食物 (商业干颗粒).
- 分析了Hg的特异化,生物转化率 (甲基化/脱甲基化) 和肠道微生物群落结构.
- 确定了参与脱甲基化的特定微生物群体,并评估了它们的生长.
主要成果:
- 饮食成分显著改变了肠道微生物结构和Hg生物转化.
- 自然的猎物饮食导致显著的去甲基化 (0.33%d-1),并增强了去甲基化细菌的生长.
- 人工食物饮食显示甲基化非常缓慢 (0.013%d-1).
结论:
- 食物选择通过肠道微生物组调节对鱼类的Hg生物转化和物种化产生重大影响.
- 将天然猎物纳入水产养殖饮食可以最大限度地减少污染和甲基 (MeHg) 积累.
- 专注于自然猎物的饮食策略对于可持续的水产养殖和鱼类安全至关重要.
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