Pedigree-Based Estimation of Reproductive Value
Pedigree-Based Estimation of Reproductive Value
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DOI：
10.1093/jhered/esz033
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发表时间：
2019-06-01
影响因子：
3.1
通讯作者：
Morrissey, Michael B.
中科院分区：
文献类型：
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作者：
Hunter, Darren C.;Pemberton, Josephine M.;Morrissey, Michael B.
一个个体或群体的成功程度，就其对未来种群的遗传贡献而言，包含在生殖价值的概念中，对于理解选择和进化至关重要。对纯种种群的长期研究提供了直接估计繁殖价值的机会。然而，在现有数据集的时间框架内，谱系所定义的遗传贡献可能在多大程度上趋同于其长期价值，从而可能被解释为对生殖价值的估计，这一点尚不清楚。我们开发了一个基于谱系的系统，计算个体和群体在出生后的几年里对人口的预期遗传表示。我们将该系统应用于推断来自外赫布里底群岛圣基尔达的Soay羊（Ovis aries）的个体和群体生殖价值。我们观察到，这些遗传贡献似乎在适度的时间框架内变得相对稳定。因此，考虑以系谱为基础的对后代遗传贡献的计算作为生殖价值的估计可能是合理的。这种方法和估计可以在几十年内稳定的知识应该为分析纯种野生种群的数据提供新的机会，这将对进化生物学和人口统计学的许多领域有价值。
How successful an individual or cohort is, in terms of their genetic contribution to the future population, is encapsulated in the concept of reproductive value, and is crucial for understanding selection and evolution. Long-term studies of pedigreed populations offer the opportunity to estimate reproductive values directly. However, the degree to which genetic contributions, as defined by a pedigree, may converge on their long-run values within the time frames of available data sets, such that they may be interpreted as estimates of reproductive value, is unclear. We develop a system for pedigree-based calculation of the expected genetic representation that both individuals and cohorts make to the population in the years following their birth. We apply this system to inference of individual and cohort reproductive values in Soay sheep (Ovis aries) from St Kilda, Outer Hebrides. We observe that these genetic contributions appear to become relatively stable within modest time frames. As such, it may be reasonable to consider pedigree-based calculations of genetic contributions to future generations as estimates of reproductive value. This approach and the knowledge that the estimates can stabilize within decades should offer new opportunities to analyze data from pedigreed wild populations, which will be of value to many fields within evolutionary biology and demography.