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估计近期和历史有效种群大小的海洋和淡水杆背

Xueyun Feng^1,2, Ari Löytynoja², Juha Merilä^1,3

¹Organismal and Evolutionary Biology Programme, University of Helsinki, Helsinki, Finland.

Molecular ecology

|June 9, 2025

概括

估计有效人口大小 (N_e) 是一个挑战. 这项研究结合了方法来重建N_e跨越时间的九脊,揭示了海洋种群保持更高的N_e.

科学领域:

人口遗传学人口遗传学
进化生物学是进化的生物学.
基因组学就是基因组学.

背景情况:

有效的人口大小 (N_e) 对于理解进化过程至关重要.
估计N_e是复杂的,因为不同的解释和方法.
不同的方法在不同的时间尺度上捕获N_e,需要结合方法.

研究的目的:

在不同的时间尺度上推断有效人口大小 (N_e) 连续.
为了调查45个九脊鱼 (Pungitius pungitius) 种群的人口历史.
评估结合各种N_e估计方法的实用性.

主要方法:

利用了来自45个九脊椎鱼种群的全基因组数据.
在N_e估计中采用了基于链接不平衡 (LD) 和融合的方法.
集成GONE,CurrentNe2和MSMC2进行全面的N_e动态解释.

主要成果:

海洋种群的N_e值 (当代,近期,历史) 始终高于沿海和淡水种群.
基因流动,无论是最近的还是历史的,都显著影响了N_e估计.
简单的总结统计数据有助于最近的人口历史重建和当代N_e ( $N_{e}^{C}) 的估计.$

结论:

结合LD和凝聚式方法提供了一个强大的N_e连续.
GONE,CurrentNe2和MSMC2的整合为N_e随着时间的推移提供了对N_e动态的有意义的见解.
海洋鱼种群在时间尺度上表现出更大的遗传多样性和弹性.

关键词:

鱼岛 (英语:Pungitius) 是一个鱼岛.添加剂混合物添加剂人口统计历史人口统计历史实际人口规模实际人口规模有九个的杆背脊.

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