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安第斯叶耳小鼠 (Phyllotis) 的物种限制和杂交

Marcial Quiroga-Carmona^1,2,3, Schuyler Liphardt⁴, Naim M Bautista¹

¹School of Biological Sciences, University of Nebraska, Lincoln, NE, United States.

bioRxiv : the preprint server for biology

|September 16, 2024

概括

安第斯山脉的叶耳小鼠多样化与纪气候变化一致,揭示了神秘的物种和正在进行的杂交. 基因组数据澄清了这种广泛传播的动物属的物种界限和进化历史.

科学领域:

基因组学就是基因组学.
进化生物学进化生物学
哺乳动物学哺乳动物学

背景情况:

叶耳鼠 (属 *Phyllotis*) 是安第斯高原上丰富的哺乳动物.
由于数据有限,对物种的界限和分布的了解很少.

研究的目的:

使用DNA变异,在Phyllotis中划定物种界限.
评估多样化的时间表和Phyllotis演变的驱动因素.
调查该属内的跨物种杂交的证据.

主要方法:

线粒体DNA变异的综合分析.
全基因组测序 (WGS) 用于分析遗传多样性.
种类划分分析和分歧约会.

主要成果:

大多数Phyllotis的多样化发生在过去的300万年内.
多样化与普莱斯托时代中后期的气候变化 (普莱斯托时代干旱假说) 相吻合.
鉴定了神秘的多样性,表明未被描述的物种. 在 *P. limatus* 和 *P. vaccarum* 之间检测到持续的杂交.

结论:

植物的多样化与纪气候变化有关,而不是主要是安第斯山脉的升起.
该属具有显著的神秘多样性,需要进一步的分类学研究.
在 *P. limatus* 和 *P. vaccarum* 之间存在一个活跃的混合区.

关键词:

在阿尔蒂普拉诺高原.安第斯山脉安第斯山脉的安第斯山脉菲洛提尼 (Phyllotini) 是一种植物.西格莫登蒂娜 (Sigmodontinae) 是一个地理范围的边界限制.这是一个内进的进攻.种类划分种类划分

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