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一个自由生活的歌鸟的表观遗传潜力和分散倾向:一个空间和时间的方法

Blanca Jimeno^1,2, Marianthi Tangili³, Julio C Domínguez¹

¹Instituto Pirenaico de Ecología, IPE-CSIC, Jaca, Spain.

Molecular ecology

|October 22, 2025

概括

表观遗传潜力 (EP),即表观遗传修饰的能力,影响了 Pied 捕鸟的出生分散. 较高的EP与增加的分散倾向有关,特别是在雌性和后代,突出其在适应中的作用.

科学领域:

进化生物学进化生物学
生态生态学生态生态学
遗传学遗传学是一个

背景情况:

产卵分散对人口动态,遗传结构和物种分布至关重要.
产后分散和在新环境中成功建立的机制尚未完全理解.
现型可塑性,可能由表观遗传机制介导,可能有助于适应新息地.

研究的目的:

为了研究表观遗传潜力 (EP) 和天生的散布倾向之间的关系,在皮特 (Ficedula hypoleuca).
将EP量化为全基因组CpG变异的数量.
检查EP在不同空间和世代背景的分散中的作用.

主要方法:

从息地殖民以来,长期研究了35年来监测的Pied捕鸟.
在息地内和息地之间分散的个体之间的EP比较.
移民和本地出生的个人之间的EP比较.
第一代和后一代个人之间的EP比较.

主要成果:

与第一代个体相比,在息地之间分散的雌性和后代的雌性中,在EP和分散倾向之间发现了显著的积极联系.
没有观察到EP与移民与本地出生的个人分散倾向之间的显著关联.
CpG变体表现出非随机的基因组分布,在促进体和外基因中频率更高.

结论:

表观遗传潜力在Pied捕虫的空间和时间尺度上的出生分散倾向中发挥着作用.
表观遗传驱动的表型可塑性可能有助于野生鸟类的分散和适应新环境.
在新地区成功定居方面,EP可能是关键的决定因素.

关键词:

通过DNA甲基化.应对能力应对能力表观遗传学是指表观遗传学.现型性可塑性现型性可塑性

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