Low interspecific variation and no phylogenetic signal in additive genetic variance in wild bird and mammal populations.
Low interspecific variation and no phylogenetic signal in additive genetic variance in wild bird and mammal populations.
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DOI：
10.1002/ece3.10693
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发表时间：
2023-11
影响因子：
2.6
通讯作者：
Postma, Erik
中科院分区：
文献类型：
--
作者：
Young, Euan A.;Postma, Erik
通过遗传变化的进化适应需要遗传变异，是使物种能够在不断变化的环境中持续生存的关键机制。虽然大量的工作都集中在了解如何以及为什么加性遗传方差（VA）不同的性状在物种内，我们仍然知道他们如何在物种之间的变化。在这里，我们第一次尝试在测试种间变异的两个补充措施的VA和在塑造这种变化的作用，遗传。为此，我们使用68种鸟类和哺乳动物的1822个狭义遗传力（h 2）和23个物种的378个加性遗传方差（CV A）估计系数进行了系统发育比较分析。控制归因于估计方法和性状类型的种内变异，我们发现h2存在一些种间变异（约15%），但CV A没有。虽然暗示了非（加性）遗传变异来源的重要性的种间变异，但样本量不足以直接检验这一假设。此外，尽管功效较低，但两种测量均未检测到系统发育信号。因此，虽然这表明种间变异的VA可能是小的，我们的理解种间变异的适应潜力的野生脊椎动物种群目前受到数据的限制，缺乏CV A估计和测量的不确定性，特别是。通过遗传变化进行的进化适应需要遗传变异，但人们对不同物种之间的遗传变异程度知之甚少。为此，我们使用68种鸟类和哺乳动物的1822个狭义遗传力和23个物种的378个加性遗传方差估计系数进行了系统发育比较分析。虽然数据的局限性意味着统计的力量是低的，我们发现，物种的加性遗传方差变化不大，这是没有一个解释的单基因。
Evolutionary adaptation through genetic change requires genetic variation and is a key mechanism enabling species to persist in changing environments. Although a substantial body of work has focused on understanding how and why additive genetic variance (V A) differs among traits within species, we still know little about how they vary among species. Here we make a first attempt at testing for interspecific variation in two complementary measures of V A and the role of phylogeny in shaping this variation. To this end, we performed a phylogenetic comparative analysis using 1822 narrow‐sense heritability (h 2) for 68 species of birds and mammals and 378 coefficients of additive genetic variance (CV A) estimates for 23 species. Controlling for within‐species variation attributable to estimation method and trait type, we found some interspecific variation in h 2 (~15%) but not CV A. Although suggestive of interspecific variation in the importance of non‐(additive) genetic sources of variance, sample sizes were insufficient to test this hypothesis directly. Additionally, although power was low, no phylogenetic signal was detected for either measure. Hence, while this suggests interspecific variation in V A is probably small, our understanding of interspecific variation in the adaptive potential of wild vertebrate populations is currently hampered by data limitations, a scarcity of CV A estimates and a measure of their uncertainty in particular. Evolutionary adaptation through genetic change requires genetic variation, but little is known about how much this varies across species. To this end, we performed a phylogenetic comparative analysis using 1822 narrow‐sense heritability for 68 species of birds and mammals and 378 coefficients of additive genetic variance estimates for 23 species. Although data limitations meant statistical power was low, we found that species varied little in their additive genetic variance and none of this was explained by phylogeny.
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DOI：
10.1098/rspb.1979.0086
发表时间：
1979-01-01
期刊：
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
GOULD, SJ;LEWONTIN, RC
通讯作者：
LEWONTIN, RC
影响因子：
2.9
作者：
Brommer, Jon E.;Wilson, Alastair J.;Gustafsson, Lars
通讯作者：
Gustafsson, Lars
影响因子：
3.3
作者：
Garcia-Gonzalez, Francisco;Simmons, Leigh W.;Evans, Jonathan P.
通讯作者：
Evans, Jonathan P.
影响因子：
56.9
作者：
Butchart, Stuart H. M.;Walpole, Matt;Watson, Reg
通讯作者：
Watson, Reg
影响因子：
3.8
作者：
Beziers, Paul;San-Jose, Luis M.;Roulin, Alexandre
通讯作者：
Roulin, Alexandre