使用eDNA检测和分析物种内基因变异:从种群遗传学到物种丰富性
Kara J Andres1,2,3, David M Lodge1,4, Suresh A Sethi5
1Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, USA.
Molecular ecology
|May 30, 2023
概括
环境DNA (eDNA) 分析现在可以揭示物种内部的遗传变异,用于人口研究. 本综述为使用eDNA评估种群遗传学和估计丰度提供了一个框架.
科学领域:
- 生态学和进化生物学
- 保护遗传学 保护遗传学
- 分子生态学分子生态学
背景情况:
- 环境DNA (eDNA) 方法可以在不同环境中快速检测物种.
- 最近的研究探讨了eDNA的内部特异性遗传变异,有助于人口评估.
- 目前还没有在人口遗传学中为eDNA提供全面的框架.
研究的目的:
- 建立一个框架,用于生成,分析和应用eDNA数据,以检测物种内变异.
- 讨论不同基因标记物对于eDNA群体研究的适用性.
- 探索使用eDNA衍生的遗传变异来估计物种丰度的方法.
主要方法:
- 对遗传标记物质及其在eDNA中的检测能力的审查.
- 电子DNA样本分析与传统基于组织的方法的比较.
- 从混合的eDNA样本中进行绝对丰度估计的情景的探索.
- 在eDNA等位基因检测和频率估计中识别错误来源.
主要成果:
- 不同的遗传标记在eDNA种群遗传学中的实用性各不相同.
- 与基于组织的方法相比,eDNA分析提出了独特的挑战.
- 通过分析eDNA的物种内变异来估计物种丰富性的潜力存在.
- 电子DNA数据中的错误可能会对人口级别分析产生重大影响.
结论:
- 标准化框架对于在人口遗传学中推进eDNA应用至关重要.
- 需要生物信息化策略来减轻eDNA数据中的错误.
- 利用eDNA的种内变异可以显著告知生态和保护管理.
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