Evolutionary relationships among the Scarabaeini (Coleoptera: Scarabaeldae) based on combined molecular and morphological data
Evolutionary relationships among the Scarabaeini (Coleoptera: Scarabaeldae) based on combined molecular and morphological data
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DOI：
10.1016/j.ympev.2006.04.018
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发表时间：
2006-09-01
影响因子：
4.1
通讯作者：
Scholtz, Clarke H.
中科院分区：
文献类型：
--
作者：
Forgie, Shaun A.;Kryger, Ute;Scholtz, Clarke H.
斯卡拉贝尼人是东半球一个滚动粪虫的部落，起源至少可以追溯到中新世中晚期(1900万-800万年前)。该部落在形态或分子系统发育方面很少或根本没有受到关注。我们获得了25种金枪鱼线粒体细胞色素氧化酶亚基I(1197bp)和16S核糖体RNA(461bp)基因的序列数据，试图进一步了解该部落内广泛的系统发育关系。对两个标记的序列数据以及216个形态性状和3个生物学性状分别进行了分析和组合。独立分析显示，树的分辨率很差，许多中间和基本节点因引导值较低而崩溃。这两个基因的许多位点都表现出强烈的A+T核苷酸偏向和高度的谱系间差异。综合分析揭示了一些得到很好支持的亲缘关系，如夜间活动物种Scarabaeus Satyrus、S.[Neateuchus]prooscideus和S.zambesianus。此外，总的证据树建议将S.(Pachysoma)提升到一个独立的属Pachysoma的地位，作为一个包含Pachylmerus foralis和Scarabaeus Sensu Lato的分支的姊妹分类单元。在后者中，通过数据集的组合保留了以下亚属：S.(Scarabaeolus)、S.(Sceliages)和S.(Kheper)。据推测，在金枪鱼中，觅食专业化和食物重新定位行为都是多种多样的。全面的证据分析发现，没有证据支持金丝雀和尤卡尼尼的共同祖先。(C)2006 Elsevier Inc.保留所有权利。
The Scarabaeini is an old world tribe of ball-rolling dung beetles that have origins dating back to at least the mid-upper Miocene (19-8 million years ago). The tribe has received little to no attention in morphological or molecular phylogenetics. We obtained sequence data from the mitochondrial cytochrome oxidase subunit I (1197 bp) and 16S ribosomal RNA (461 bp) genes for 25 species of the Scarabaeini in an attempt to further resolve broad phylogenetic relationships within this tribe. Sequence data from both markers along with 216 morphological and 3 biological characters were analysed separately and combined. Independent analyses showed poorly resolved trees with many of the intermediate and basal nodes collapsed by low bootstrap values. Many sites in both genes exhibited strong A + T nucleotide bias and high interlineage divergences. The combined analysis revealed a number of well supported relationships such as the monophyly of the nocturnal species Scarabaeus satyrus, S. [Neateuchus] proboscideus, and S. zambesianus. Furthermore, the total evidence tree suggested to elevate S. (Pachysoma) to the status of an independent genus, Pachysoma, as a sister taxon to a clade containing Pachylomerus femoralis and Scarabaeus sensu lato. Within the latter, the following subgenera were maintained by the combination of data sets: S. (Scarabaeolus), S. (Sceliages), and S. (Kheper). Both, feeding specialisation and food relocation behaviour, were inferred to be polyphyletic in the Scarabaeini. Total evidence analysis found no support for common ancestry of Scarabaeini and Eucraniini. (c) 2006 Elsevier Inc. All rights reserved.