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在Muroidea (Rodentia),最大的哺乳动物辐射线的多样化和主要生物地理事件的贝叶斯尖端日期时间表
Raquel López-Antoñanzas1,2, Tiago R Simões3, Fabien L Condamine4
1Institut Des Sciences de L'Évolution de Montpellier (CNRS/UM/IRD/EPHE), Université de Montpellier, 34095, Montpellier, France. raquel.lopez-antonanzas@umontpellier.fr.
BMC biology
|November 26, 2024
概括
这项研究使用形态数据和贝叶斯尖端约会重建了Muroidea动物的进化历史. 它揭示了对它们的多样化,生物地理学的新见解,并为这个主要的哺乳动物群体提供了强大的时间表.
科学领域:
- 进化生物学 进化生物学
- 古生物学的古生物学
- 哺乳动物学 哺乳动物学
背景情况:
- 已灭绝的生物对于理解现代物种的起源和生物地理学至关重要.
- 遗传学方法,特别是贝叶斯式的化石种类方法,使用形态数据来增强进化树的推断.
- 作为最大的哺乳动物群体,类动物拥有丰富的化石记录,但它们的族系和分歧时间主要基于具有局限性的分子数据.
研究的目的:
- 为了呈现第一个全面的形态数据集的Muroidea,包括广泛的化石采样.
- 应用贝叶斯形态时钟与尖端约会和生物地理模型用于新的遗传学假设.
- 修订分歧时间并推断Muroidea的生物地理历史,解决以前基于分子的研究的局限性.
主要方法:
- 开发了第一个广泛的形态数据集,用于Muroidea与化石种类.
- 应用贝叶斯形态时钟,结合尖端的日期,以考虑位置的不确定性.
- 利用基于过程的生物地理模型来分析分散模式.
主要成果:
- 一个关于壁状动物关系的新假设和修订的分歧时间,包括化石放置的不确定性.
- 墙壁多样化的强大的时间表,即使在时钟模型违规的情况下也显示一致性.
- 生物地理分析表明动态分散事件主要发生在古北极和北非地区之间.
结论:
- 提供了对Muroidea动物进化的关键见解,并澄清了主要血统的进化路径.
- 展示了贝叶斯方法对基于形态的遗传学数据集的优势.
- 建立了强大的分类,并推断了Muroidea的生物地理历史,多样化和分歧时间.
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