凯诺时代的进化历史掩盖了阿坎托鱼类的中期起源
Chase D Brownstein1, Alex Dornburg2, Thomas J Near1,3
1Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States.
Evolution; international journal of organic evolution
|March 4, 2025
概括
珀科莫尔法 (Percomorpha) 的最亲密的亲属,是一种多样化的鱼类类,在恐龙灭绝后多样化. 它们最近的息地转移为Percomorpha提供了有限的洞察力.
科学领域:
- 进化生物学是进化的生物学.
- 鱼类学 鱼类学 鱼类学
- 人类遗传学 是一个学科.
背景情况:
- 珀科莫尔法 (Percomorpha),包括超过18900种,占现存脊椎动物的近三分之一.
- 了解Percomorpha的进化起源和多样化对于理解海洋生物多样性至关重要.
- 珀科莫尔法 (Percomorpha) 姐妹血统的遗传位置仍然没有解决,这阻碍了对其多元化驱动因素的洞察.
研究的目的:
- 为了解决Percomorpha最亲近的亲属的遗传关系:Trachichthyiformes,Holocentridae和Berycoidei.
- 调查这些姐妹血统中多样化和息地过渡的时间.
- 评估这些亲属是否适合理解Percomorpha异常多样性的起源.
主要方法:
- 使用887个超保守元素位置的基因组学分析.
- 8个核基因的桑格测序.
- 对多样化时间和息地殖民化的比较分析.
主要成果:
- 这项研究解决了Trachichthyiformes,Holocentridae和Berycoidei相对于Percomorpha.com的遗传位置.
- 与化石记录相反,这些谱系在白纪-古纪大灭绝后多样化.
- 几种类型独立殖民深海和浅水珊瑚礁息地在代,与新奇的生命历史特征进化相吻合.
结论:
- 在白纪-古纪灭绝事件之后,Percomorpha的最亲密的亲属显著多样化.
- 在世,奥利古世和世期间,姐妹血统的独立息地入侵塑造了它们的多样化.
- 由于它们最近的息地转移,这些谱系不是理解Percomorpha海洋多样性的深层进化起源的理想模型.
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