蚁茧的系统发育分析与性状进化

IF 1.3 3区农林科学 Q2 ENTOMOLOGY

Insect Systematics & Evolution Pub Date : 2021-07-20 DOI:10.1163/1876312X-BJA10008

Jordan A. Greer, C. Moreau

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引用次数: 2

摘要

大多数蚂蚁已经失去了结茧的能力。为了探索蚁科茧丢失的进化过程，我们跨属水平的系统发育对茧蛹进行了祖先状态重建，并使用姐妹枝分析来确定茧进化对蚂蚁物种形成的影响。然后，我们拟合了茧状态与其他几种生物性状之间的相关进化模型。我们发现茧的再次出现是罕见的，“裸”谱系在9个姐妹组比较中有5个显示出物种形成率的增加。胸膜后腺和工蜂多态性与茧状态相关的进化模型更受青睐。后胸膜腺的有利进化率尚无定论，而工蜂多态性显示出较高的多态性过渡率，并伴有茧的丢失。这些结果表明，茧的脱落可能允许其他复杂性状的发展，并可能代表了放松选择的一个新例子。

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Phylogenetic analysis and trait evolution of ant cocoons

Most ant species have lost the ability to spin cocoons. To explore the evolution of cocoon loss within Formicidae, we perform an ancestral state reconstruction of cocooned pupae across a genus-level phylogeny and use a sister clade analysis to determine the impact of cocoon evolution on ant speciation. Then, we fit models of correlated evolution between cocoon status and several other organismal traits. We find that the re-emergence of cocoons is rare and that “naked” lineages display an increased rate of speciation in 5 out of 9 sister group comparisons. Models of correlated evolution with cocoon status were favored for metapleural gland and worker polymorphism. Metapleural gland favored rates of evolution were inconclusive, while worker polymorphism displayed a higher transition rate towards polymorphism coupled with cocoon loss. These results suggest that cocoon loss may allow for other complex traits to develop and may represent a novel example of relaxed selection.

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来源期刊

Insect Systematics & Evolution 生物-进化生物学

CiteScore

3.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Insect Systematics & Evolution (ISE) publishes original papers on all aspects of systematic entomology and the evolutionary history of both extant and extinct insects and related groups. Priority is given to taxonomic revisions and phylogenetic studies employing morphological and molecular data. ISE also welcomes reviews and syntheses that can appeal to a wide community of systematic entomologists. Single species descriptions, regional checklists, and phylogenetic studies based on few taxa or single molecular markers will generally not be accepted.