英国新生物相互作用的快速演变 棕色Argus蝶从其地理范围的基因组变异中使用基因组变异
Maaike de Jong1, Alexandra Jansen van Rensburg1,2, Samuel Whiteford3
1School of Biological Sciences, University of Bristol, Bristol, UK.
Molecular ecology
|October 6, 2023
概括
英国蝶Aricia agestis通过发展新的食物植物关系,迅速适应气候变化. 这种适应包括从不同位置组装新的基因型,而不依赖于先前存在的适应基因.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 了解人口适应对于预测全球变化的生物多样性持久性至关重要.
- 快速的气候变化需要研究物种在生态边缘的适应能力.
- 英国蝶Aricia agestis因气候变化而扩大其范围,进化新的宿主植物相互作用.
研究的目的:
- 为了确定与Aricia agestis.进化反应相关的基因组区域.
- 调查人口历史和生态变异在适应中的作用.
- 了解在范围扩大期间快速适应的遗传基础.
主要方法:
- 使用ddRAD分析检查来自261只雌性Aricia agestis的61,210个可变SNP.
- 分析了跨多个染色体的基因组区域,以寻找与适应的关联.
- 在选定的和中立的基因组区域中比较单元型变异.
主要成果:
- 确定了与Aricia agestis.的进化适应相关的多个基因组区域.
- 尽管息地分散,但在该物种的英国范围观察到广泛的基因流动.
- 有证据表明,多基因适应是通过等位基因的独立传播发生的,而不是预先适应的基因型.
结论:
- Aricia agestis的快速气候变化适应是多基因的,并且发生在范围扩张期间.
- 新的生物相互作用是通过从不同的等位基因组组装新的基因型而演变的.
- 适应并不依赖于预先适应的基因型的存在.
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