对的进化,分歧时间和祖先范围的线粒基因组洞察力Coturnix
Prateek Dey1,2,3, Swapna Devi Ray1, Venkata Hanumat Sastry Kochiganti4
1Sálim Ali Centre for Ornithology and Natural History (South India Centre of Wildlife Institute of India), Anaikatti, Coimbatore 641108, Tamil Nadu, India.
Genes
|June 27, 2024
概括
常见 (Coturnix coturnix) 和日本 (Coturnix japonica) 的进化历史揭示了它们在米欧纪中期的多样化,由分散和环境适应形成. 它们目前的范围源于不同的分散策略,受地理限制的影响.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 生物地理学 生物地理学
背景情况:
- 旧世界,Coturnix coturnix (普通) 和Coturnix japonica (日本),在形态上有相似之处,但地理范围不同.
- 了解它们的进化轨迹和祖先分布对于鸟类生物地理学至关重要.
研究的目的:
- 为了阐明Coturnix coturnix和Coturnix japonica的进化轨迹和祖先分布模式.
- 分析他们的线粒体基因组,了解多样化和地理范围的形成.
主要方法:
- 线粒基因组分析以评估结构性保护和进化压力.
- 基因树上的选择分析,特别是nad4基因.
- 差异时间估计和植物遗传学分析.
- 祖先范围的重建.祖先范围的重建.
主要成果:
- 在这两种长物种之间观察到高度的结构性保护和相同的翻译机制.
- 在nad4基因中检测到显著的阳性选择,与环境适应有关.
- 多样化始于米奥生中期 (13.89万年前),物种差异在225万年前左右.
- 祖先的范围被重建到东方地区,随后的分散塑造了当前的分布.
结论:
- 目前Coturnix coturnix和Coturnix japonica的分布主要是分散事件的结果,而不是替代性.
- 分散策略受到跨物种领土性和西藏高原地理的影响.
- 这项研究为进一步研究Coturnix属的进化和生物地理过程提供了基础.
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