大规模的基因组数据揭示了猫头 (Noctuoidea) 的分类和进化
Xuankun Li1,2,3,4, Jesse W Breinholt2,5, Jose I Martinez2,6
1Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
概括
猫头 (Noctuoidea) 的进化历史现在很清楚,这要归功于一个强大的遗传学框架. 这项研究提供了第一个大规模的基因组数据来绘制他们的家族关系和进化时间表.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 猫头 (Noctuoidea) 是一个高度多样化的超级家族,具有显著的生态和经济影响.
- 由于缺乏强大的遗传学框架,人们对Noctuoidea家族之间的进化历史和关系的了解仍然很少.
- 这种知识差距阻碍了我们对它们对生物多样性的贡献和害虫管理策略的理解.
研究的目的:
- 为了重建一个统计学 robust phylogenetic 和时间框架的猫头超级家族 (Noctuoidea).
- 为了澄清所有六个蝶家族之间的进化关系.
- 确定Noctuoidea多元化的时间表.
主要方法:
- 用76种物种的基因组和转录组序列进行了家族遗传学重建.
- 对1234个基因 (946.4 kb核酸) 的分析.
- 利用连接和基因凝聚方法,使用BEAST分析来测定分子钟的年龄.
主要成果:
- 恢复了Noctuoidea家族的清晰分类,支持了这种关系:Oenosandridae + (Notodontidae + (Erebidae + (Nolidae + (Euteliidae + Noctuidae)))).
- 据估计,Noctuoidea的冠冕年龄是7450万年前 (Ma).
- 大多数家族起源于古世 (23万年前) 结束之前.
结论:
- 这项研究为整个猫头超级家族 (Noctuoidea) 提供了第一个统计学上强大的原始遗传和时间框架.
- 这些发现基于大规模的基因组数据,为未来研究Noctuoidea进化提供了坚实的基础.
- 建立的框架将有助于理解这些重要昆虫的多样化和生态作用.
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