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帕塞林姐妹类比较揭示了半球间分散的可变宏观进化结果

Tyler S Imfeld¹, F Keith Barker^2,3

¹Department of Biology, Regis University, Denver, CO, United States.

Journal of evolutionary biology

|January 29, 2024

概括

扩散到新的地区可能会影响鸟类的多样化,但结果各不相同. 竞争和生态机会比特征进化更影响物种积累,这表明一些鸟类群体的进化历史是孤立的.

科学领域:

宏观进化过程是指宏观进化的过程.
航空公司的多元化.
生物地理学生物地理学生物地理学

背景情况:

分散事件为宏观演变提供了洞察力,特别是竞争如何影响多元化.
对竞争效应的实证研究往往受到地理或遗传学范围的限制.
了解对多样化的约束对于宏观进化研究至关重要.

研究的目的:

测试关于生态机会和多样化的职位介导约束的假设.
为了比较在西半球散布到西半球的骨流类群的宏观进化结果,与它们在东半球的姐妹群相比.
评估现有群体 (suboscines) 对新增群体 (oscines) 多样化的影响.

主要方法:

对16个骨性鸟类群及其姐妹群的比较分析.
西半球骨组合多样性的比较与现有的子骨类.
对类特异性形态差异和相对于分散历史的进化速度的分析.

主要成果:

与姐妹类相比,对西半球的骨分散没有一致的宏观进化结果.
大多数骨类群体显示了生态机会或位效应的证据,主要是由物种积累率驱动的.
西半球的骨干和子骨干占据了类似的功能特征多样性,尽管骨干特征演化率更高,但演化动态相似.

结论:

生态机会和职务限制影响物种在分散类的积累.
特征进化速率和殖民时间比物种积累的解释要少.
西半球的骨和子骨组合可能在相对孤立的状态下演变.

关键词:

生物地质和生物地理学扩散散散的分散.多样化的多样化多样化的多样化生态机会生态机会流星动物流星动物特性演化特性演化特性演化

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