Region‐specific diversification dynamics and biogeographic history of one of the most diverse families of insects

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY
Hamid Reza Ghanavi, Nicolas Chazot, Isabel Sanmartín, Leidys Murillo‐Ramos, Sebastián Duchêne, Pasi Sihvonen, Gunnar Brehm, Niklas Wahlberg
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引用次数: 0

Abstract

A long‐standing question in evolutionary biology is how historical biogeographic processes have shaped the current diversity of organisms, especially for highly diverse groups. We study the diversification dynamics and biogeographic processes of one of the most diverse families of Lepidoptera, Geometridae, with over 24,000 described species and a worldwide distribution. Despite the cosmopolitan distribution of the family, most species of Geometridae have limited distribution ranges. We present the largest historical biogeography and diversification study on the current diversity patterns and distribution ranges of Geometridae. We use a multi‐locus dataset of 1200 taxa to estimate the historical biogeography of Geometridae, implementing a Bayesian approach of the Dispersal‐Extinction‐Cladogenesis (DEC) model that incorporates palaeographic‐based dispersal graphs with uncertainty in geological ages in RevBayes. We also implement a Bayesian time‐variable, episodic birth–death model and a model that allows branch‐specific speciation rates to estimate the diversification dynamics in the family. Our results suggest that the most recent common ancestor of Geometridae was distributed in the New World, with the Neotropics being the most likely ancestral area. An increase in diversification rates occurred circa 30–40 million years ago (Mya), coinciding with a time of a major global climate cooling in the Eocene. Clade‐specific shifts in speciation rates also occurred around 10–15 Mya, coincident with another period of major climate change in the Oligocene. Our results point to different biogeographical and evolutionary histories per area to show the differences of the diversification rates in different biogeographical regions through time, showing the relative importance of each region in the diversification history of Geometridae.
最多样化的昆虫家族之一的特定区域多样化动态和生物地理历史
进化生物学中一个长期存在的问题是,历史上的生物地理过程如何塑造了当前生物的多样性,尤其是对于高度多样化的类群而言。我们研究了鳞翅目最多样化的科之一--尺蠖科的多样化动态和生物地理过程。尽管该科分布于世界各地,但大多数尺蠖蛾科物种的分布范围有限。我们对尺蠖科目前的多样性模式和分布范围进行了最大规模的历史生物地理学和多样性研究。我们利用一个包含 1200 个分类群的多焦点数据集来估计尺蠖蛾科的历史生物地理学,并采用贝叶斯方法建立了一个 "扩散-灭绝-趋向发生(DEC)"模型,该模型结合了基于古生物学的扩散图和 RevBayes 中地质年代的不确定性。我们还实施了一个贝叶斯时变、偶发生死模型和一个允许分支特异性物种分化率的模型,以估计该科的分化动态。我们的研究结果表明,尺蠖科最近的共同祖先分布在新大陆,而新热带是最有可能的祖先地区。大约 3,000 万至 4,000 万年前(Mya),与始新世全球气候大变冷的时期相吻合,出现了物种多样化率的上升。在大约 10-15 百万年前,物种分化率也发生了特定支系的变化,这与渐新世的另一个重大气候变化时期相吻合。我们的研究结果指出了每个地区不同的生物地理学和进化历史,显示了不同生物地理学地区的物种多样化率在时间上的差异,显示了每个地区在尺蠖科物种多样化历史中的相对重要性。
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来源期刊
Systematic Entomology
Systematic Entomology 生物-进化生物学
CiteScore
10.50
自引率
8.30%
发文量
49
审稿时长
>12 weeks
期刊介绍: Systematic Entomology publishes original papers on insect systematics, phylogenetics and integrative taxonomy, with a preference for general interest papers of broad biological, evolutionary or zoogeographical relevance.
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