侵袭性哈雷金母鸟的基因组和表型变异的全球模式
Hongran Li1,2, Yan Peng2, Yansong Wang1
1Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, People's Republic of China.
BMC biology
|June 19, 2023
概括
侵袭性哈雷金母鸟 (Harmonia axyridis) 可能起源于中国东部,具有明显的线粒体单体类型,影响其在各大洲的传播和侵袭性. 进一步的基因组分析证实了它的亚洲起源和适应性特征.
科学领域:
- 生态生态学 生态生态学
- 遗传学 是一个遗传学.
- 侵入性物种 生物学 生物学
背景情况:
- 子 (Harmonia axyridis) 是一种来自亚洲的入侵性昆虫,对全球生物多样性造成了重大负面影响.
- 虽然对生命历史特征进行了广泛的研究,但对其成功殖民非本土地区的遗传基础需要进一步调查.
- 之前的研究采用了分子工具,但需要更广泛的地理采样进行先进的基因组分析来证实这些发现.
研究的目的:
- 为了识别入侵的哈雷金母鸟 (Harmonia axyridis) 的起源和进化史.
- 调查导致H. axyridis.入侵成功的遗传因素.
- 探索与线粒体单质类型相关的侵入性的潜在差异.
主要方法:
- 全基因组核人口结构分析.
- 进化历史的估计,包括迁移模式和人口规模.
- 分析线粒体单质类型及其在原生与非原生范围中的优势.
- 实验室观察与不同类型相关的生命史特征.
主要成果:
- 一个中国东部的种群被确定为所有非本地H. axyridis种群的可能来源.
- 确定了与身体颜色,视觉感知和血淋巴合成相关的几个自适应性基因组位置.
- 有证据表明非对称的迁移,欧洲最近的混合,历史上的瓶,以及非本土人口中较小的有效规模.
- 线粒体单质型Hap1在非本地范围中占主导地位,而Hap1和Hap2在本地范围中占主导地位,观察到微小的生命史差异.
结论:
- 这项研究提供了关于Harmia axyridis从亚洲到其他大陆的入侵动态的新见解.
- 重建了它在中国本土地区的地理范围演变.
- 这些发现暂时表明,H. axyridis. 的不同线粒体单体类型之间的侵入性可能会有所不同.
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