多种约会方法和化石记录的洞察力表明,树皮甲虫早于芽细胞的陆地革命
Jules Ferreira1,2, Bjarte H Jordal3, Fabien L Condamine4
1Institut Botànic de Barcelona (CSIC-CMCNB), 08038 Barcelona, Spain.
Systematic biology
|February 20, 2026
概括
由于化石的不确定性,估计树皮甲虫 (Scolytinae) 的年龄具有挑战性. 使用多个化石进行总证据约会,改进了估计,这表明在基精子地球革命之前的多样化.
科学领域:
- 进化生物学 进化生物学
- 古生物学的古生物学
- 分子遗传学分子遗传学
背景情况:
- 估计类分歧时间是复杂的,通常依赖于对化石放置敏感的节点约会.
- 树皮甲虫 (Curculionidae:Scolytinae) 的分子约会在历史上使用了Cylindrobrotus pectinatus (~125 Ma) 没有遗传学验证.
研究的目的:
- 为了完善树皮甲虫子家族Scolytinae的分歧时间估计.
- 为了比较总证据约会,节点约会和贝叶斯布朗桥方法的有效性.
主要方法:
- 总证据约会整合形态和分子数据与19个斯科利化石.
- 使用传统节点约会和仅化石贝叶斯布朗桥模型进行比较分析.
主要成果:
- †Cylindrobrotus pectinatus在遗传学上更接近特定的部落 (Dryocoetini s.l.,Ipini-Dryocoetini s.l.) 而不是子家族的干系.
- 总的证据约会,与未连接的时钟,提供了Scolytinae年龄的~149.9134.9万年,当C. 虫被放置在亚家族内.
- 节点约会产生了更早的估计 (~195.4131.7万年),和贝叶斯布朗桥 (~168.4141.2万年).
结论:
- 在所有应用的方法中,Scolytinae的多样化早于Angiosperm陆地革命.
- 整合多种约会方法对于减轻偏差和实现可靠的分歧时间估计至关重要.
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