Phylogenetic Analysis of the North American Beetle Genus Trichiotinus (Coleoptera: Scarabaeidae: Trichiinae)

IF 1.6 Q2 ENTOMOLOGY Psyche: A Journal of Entomology Pub Date : 2016-08-14 DOI:10.1155/2016/1584962
T. K. Philips, M. Callahan, J. Orozco, Naomi S. Rowland
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引用次数: 3

Abstract

A hypothesized evolutionary history of the North American endemic trichiine scarab genus Trichiotinus is presented including all eight species and three outgroup taxa. Data from nineteen morphological traits and CO1 and 28S gene sequences were used to construct phylogenies using both parsimony and Bayesian algorithms. All results show that Trichiotinus is monophyletic. The best supported topology shows that the basal species T. lunulatus is sister to the remaining taxa that form two clades, with four and three species each. The distribution of one lineage is relatively northern while the other is generally more southern. The ancestral Trichiotinus lineage arose from 23.8–14.9 mya, and east-west geographic partitioning of ancestral populations likely resulted in cladogenesis and new species creation, beginning as early as 10.6–6.2 mya and as recently as 1.2–0.7 mya. Morphological character evolution is also briefly discussed. The limited distribution of T. rufobrunneus in Florida and T. viridans in the Midwest mainly due to urban development and widespread agriculture makes these two species of conservation concern.
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北美毛滴虫属的系统发育分析(鞘翅目:金龟甲科:毛滴虫科)
提出了一种假设的北美特有旋毛虫圣甲虫属(Trichiotinus)的进化历史,包括所有8种和3个外群分类群。利用19个形态性状数据和CO1、28S基因序列,采用简约算法和贝叶斯算法构建系统发生系统。结果表明毛霉属单系。最佳支持的拓扑结构表明,基础种T. lunulatus是其余分类群的姐妹,形成两个分支,每个分支有4个和3个物种。一个谱系的分布相对北部,而另一个通常更南部。毛毛虫的祖先谱系起源于23.8-14.9万年前,祖先种群的东西地理划分可能导致了枝进化和新物种的产生,最早开始于10.6-6.2万年前,最近开始于1.2-0.7万年前。还简要讨论了形态特征的演化。由于城市发展和广泛的农业,佛罗里达的T. rufobrunneus和中西部的T. viridans分布有限,这两个物种的保护受到关注。
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CiteScore
1.80
自引率
0.00%
发文量
8
审稿时长
15 weeks
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