在广泛分布的树属Dendropsophus (Anura: Hylidae: Hylinae) 中,遗传学,生物地理学和生命历史演变
Courtney Whitcher1, Victor G D Orrico2, Santiago Ron3
1Florida State University, Department of Biological Science, Tallahassee, FL, USA.
Molecular phylogenetics and evolution
|December 26, 2024
概括
新的基因组数据解决了Dendropsophus树中的关系,揭示了关键的进化见解. 这项研究澄清了两动物的生物地理和多样化,比安第斯山脉升起等重大地质事件更早.
科学领域:
- 类学 类学 类学 类学
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
背景情况:
- 丹德罗普索弗斯 (Dendropsophus) 是一种多样化的树属.
- 以前使用桑格测序和现象特征 (SP) 的研究提高了理解,但留下了遗传学和生物地理学的问题.
- 解决内部关系和历史分散模式仍然是一个挑战.
研究的目的:
- 为了澄清树属Dendropsophus的内部关系和生物地理历史.
- 将新的基因组数据与现有数据集集集成,以提高基因组分辨率.
- 调查卵置部位的进化史及其对血统积累的影响.
主要方法:
- 固定混合丰富 (AHE) 用于生成来自78个Dendropsophus种类的432个核位点的数据.
- 遗传学分析将AHE数据与以前发表的桑格生成的线粒体和核位置和现象特征 (SP) 结合起来.
- 估计了分歧时间,并分析了卵位点演变.
主要成果:
- 添加 AHE 数据对 clade 组成的影响很小,但对于解决节点和增加支持至关重要.
- 超过80%的种群在AHE + SP和SP-only分析之间一致.
- 一种物种在群体之间被转移,而D. leucophyllatus群体被重新定义以避免对类.
结论:
- 定杂交丰富显著增强了Dendropsophus.在内的遗传学分辨率.
- 该属可能起源于大约5700万年前,早于安第斯山脉的升起.
- 散布模式表明,一些类型的生态变化比以前假设的少受限制,为两生物地理学提供了新的见解.
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