内地习惯推动了阿巴拉契亚山脉Lathrobium Gravenhorst (Coleoptera,Staphylinidae) 的神秘多样化
Adam Haberski1, Michael S Caterino1
1Dept. of Plant & Environmental Sciences, 171 Poole Agricultural Center, Clemson University, Clemson, SC 29634-0310, USA.
Molecular phylogenetics and evolution
|December 1, 2024
概括
南阿巴拉契亚山脉由于古老的气候变化而拥有内地物种. 这些山区的寒冷气候避难所促进了Lathrobium甲虫的多样化,有三种谱系独立到达.
科学领域:
- 生态学和进化生物学.
- 生物地理学 生物地理学 生物地理学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 南部的阿巴拉契亚山脉是全球生物多样性的热点,以高度的特有性而闻名.
- 了解独立种类之间共享的生物地理模式,可以揭示流行病的共同驱动因素.
- 霍拉克蒂克的Lathrobium属包括六种在阿巴拉契亚高原本土的不飞物种.
研究的目的:
- 为了研究阿巴拉契亚拉斯罗比乌姆的遗传学和生物地理关系.
- 为了测试Lathrobium属内的现有亚基因假设.
- 确定该地区特有病和多样化的驱动因素.
主要方法:
- 一种整合性方法,结合了形态数据和多位置分子数据集.
- 对176个代表67个种群的样本进行了遗传学分析.
- 使用BEAST2.2.的分歧时间估计.
主要成果:
- 遗传学分析揭示了拉斯罗宾族 (Lathrobium) 血统在阿巴拉契亚山脉的三个独立殖民事件.
- 这些谱系的估计分歧时间表明,它们的到来是在米奥生和早期普略生 (16.44.6万年) 之间,物种化发生在普生 (2.30.1万年) 期间.
- 发现Abletobium亚属不是单体的,因此被提议作为Glyptomerus的同义词.
结论:
- 在阿巴拉契山脉内的寒冷气候避难所对于土壤息 (内地生物) 的特有种类的持久性和现场多样化至关重要.
- 一个米奥森时代的气候很可能驱使了拉斯罗族的血统进入山区.
- 随后在温暖的普莱斯托时代冰河间时期的山顶避难区的隔离促进了物种化.
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