链接不平衡方法用于估计当代有效人口规模的实际应用:一篇综述
1School of Aquatic and Fishery Sciences, University of Washington, Seattle, Washington, USA.
Molecular ecology resources
|October 24, 2023
概括
使用链接不平衡 (LD) 估计有效种群大小 (Ne) 是常见的. 本综述总结了在现实世界的人口中影响Ne准确性和精度的因素.
科学领域:
- 人口遗传学 人口遗传学
- 保护遗传学 保护遗传学
背景情况:
- 链接不平衡 (LD) 方法被广泛用于估计自然和管理种群的有效种群大小 (Ne).
- 在过去的二十年中,许多研究评估了基于LD的底层Ne模型的简化假设.
研究的目的:
- 审查和总结基于LD的Ne估计方法的性能评估.
- 通过专注于影响准确性和精度的因素,为实际人群应用Ne方法提供实际指导.
主要方法:
- 综合审查已发表的评估基于LD的Ne估计方法的研究.
- 分析引入偏差的因素,包括LD计算 (r2),采样错误,物理联系,人口结构和遗传因素.
- 检查影响精度的因素,如伪复制,样本大小,以及对大群体的挑战.
主要成果:
- 确定了Ne估计中的许多潜在偏差来源,包括r2计算,采样错误,物理联系,人口结构,突变,选择,交配系统和数据质量.
- 突出了影响精度的因素,如大型数据集中的伪复制,小样本大小,以及在大型人群中估计Ne的困难.
结论:
- 基于LD的Ne方法需要仔细考虑许多因素,以确保在实际应用中准确和精确的估计.
- 需要进一步研究权重LD值,样本组合,使用基因型概率,LD修剪,并将该方法应用于部分一夫一妻制的物种.
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