Multi-generation genetic contributions of immigrants reveal cryptic elevated and sex-biased effective gene flow within a natural meta-population

Impacts of immigration on micro-evolution and population dynamics fundamentally depend on net rates and forms of resulting gene flow into recipient populations. Yet, the degrees to which observed rates and sex ratios of physical immigration translate into multi-generational genetic legacies have not been explicitly quantified in natural meta-populations, precluding inference on how movements translate into effective gene flow and eco-evolutionary outcomes. Our analyses of three decades of complete song sparrow (Melospiza melodia) pedigree data show that multi-generational genetic contributions from regular natural immigrants substantially exceeded those from contemporary natives, consistent with heterosis-enhanced introgression. Further, while contributions from female immigrants exceeded those from female natives by up to three-fold, male immigrants’ lineages typically went locally extinct soon after arriving. Both the overall magnitude, and the degree of female bias, of effective gene..., The data come from a long-term individual-based study of free-living song sparrows (Melospiza melodia) on Mandarte island, British Columbia, Canada., , # Data from: Multi-generation genetic contributions of immigrants reveal cryptic elevated and sex-biased effective gene flow within a natural meta-population

The dataset comprises R scripts and data required to reproduce the analyses presented in the manuscript:
\"Multi-generation genetic contributions of immigrants reveal cryptic elevated and sex-biased effective gene flow within a natural meta-population\"

Authors: Jane M. Reid, Lisa Dickel, Lukas F. Keller, Pirmin Nietlisbach and Peter Arcese
August 2023

Study population: Song sparrows (Melospiza melodia) on X̱OX̱ DEȽ (English name Mandarte island),
British Columbia, Canada, (latitude 48.6329°, longitude -123.2859°, 0.06 km²)

Files are summarised below
R scripts are annotated to explain steps and definitions of all variables
Code was written and used with R v4.2.1

## Description of the data and file structure

There are two sets of files that allow the results and figures presented in the manuscript to be directly reproduced

Fi...

个体迁入对微观进化（micro-evolution）与种群动态（population dynamics）的影响，本质上取决于迁入受体种群后产生的基因流（gene flow）的净速率与形式。然而，在自然集合种群（meta-population）中，观测到的实际迁入速率与性比如何转化为多代遗传遗留，尚未得到明确量化，这阻碍了我们推断个体移动如何转化为有效基因流以及生态进化（eco-evolutionary）结果。

我们对为期三十年的完整歌带鹀（Melospiza melodia）谱系数据进行分析后发现，常规自然迁入个体的多代遗传贡献，显著高于当代本地个体，这与杂种优势（heterosis）增强的基因渐渗（introgression）现象相符。此外，尽管雌性迁入个体的遗传贡献较雌性本地个体最高可达三倍，但雄性迁入个体的谱系通常在抵达后不久便在当地灭绝。有效基因流的整体规模与雌性偏向程度均……（原文内容截断）

本数据集源自加拿大不列颠哥伦比亚省曼达特岛（Mandarte Island）上针对野生歌带鹀（Melospiza melodia）开展的长期个体追踪研究。
# 数据来源：《移民的多代遗传贡献揭示自然集合种群中隐秘的增强型性偏向有效基因流》

本数据集包含复现该论文中分析所需的R脚本与数据，论文标题为《移民的多代遗传贡献揭示自然集合种群中隐秘的增强型性偏向有效基因流》。
作者：简·M·里德（Jane M. Reid）、丽莎·迪克（Lisa Dickel）、卢卡斯·F·凯勒（Lukas F. Keller）、皮尔明·尼特里利斯巴赫（Pirmin Nietlisbach）与彼得·阿塞（Peter Arcese）
2023年8月

研究种群：加拿大不列颠哥伦比亚省曼达特岛（原文编码异常，英文名为Mandarte Island）上的歌带鹀（Melospiza melodia），坐标为北纬48.6329°、西经123.2859°，面积0.06平方千米。

文件汇总如下：
所有R脚本均带有注释，用于说明分析步骤与所有变量的定义。本代码基于R v4.2.1版本编写并运行。

## 数据与文件结构说明
本数据集包含两组文件，可直接复现论文中呈现的结果与图表。（原文后续内容截断）