Ahn Kee-Jeong, Jeon Mi-Jeong, Branham Marc A
Department of Biology, Chungnam National University, Daejeon 305-764, South Korea.
Biological Resources Research Department, National Institute of Biological Resources, Incheon 404-170, South Korea.
Cladistics. 2010 Aug;26(4):344-358. doi: 10.1111/j.1096-0031.2009.00290.x. Epub 2009 Oct 23.
A phylogenetic analysis of the tribe Liparocephalini Fenyes is presented based on morphological and molecular characters. The data set comprised 50 adult morphological characters, partial COI (907 bp), COII (366 bp) and 12S rDNA (325-355 bp), and nearly complete sequences of 18S rDNA (1768-1902 bp) for 21 species. Eighteen species of liparocephaline beetles from all eight genera and three outgroups, are included. The sequences were analysed separately and simultaneously with morphological characters by direct optimization in the program POY4 and by partitioned Bayesian analysis for the combined data. The direct optimization (DO) tree for the combined data under equal weighting, which also shows a minimum incongruence length difference value, resulted in a monophyletic Liparocephalini with the following patterns of phylogenetic relationships (outgroup ((Baeostethus, Ianmoorea) (Paramblopusa ((Amblopusa, Halorhadinus) (Liparocephalus, Diaulota))))). A sensitivity analysis using 16 different parameter sets for the combined data shows the monophyly of the liparocephalines and all its genera under all parameter sets. Bayesian analysis resulted in topological differences in comparison with the DO tree under equal weighting only in the position of the genus Paramblopusa and clade (Amblopusa + Halorhadinus), which were reversed. Historical biogeography and the stepwise evolutionary colonization of intertidal habitat in the Liparocephalini are discussed. Based on the biogeographical analyses, we hypothesize that the ancestor of the Liparocephalini occurred along the Panthallassan Ocean, the direct antecedent of the Pacific Ocean, followed by repeated dispersals to the Nearctic from the Palearctic. We also hypothesize that ancestors of the Liparocephalini appear to have arisen in the littoral zone of beaches and then colonized rocky reef areas in the low tidal zone later through high- to mid-tide zones. © The Willi Hennig Society 2009.
基于形态学和分子特征，对脂头甲族（Fenyes）进行了系统发育分析。数据集包括50个成虫形态特征、部分COI（907bp）、COII（366bp）和12S rDNA（325 - 355bp），以及21个物种的近乎完整的18S rDNA序列（1768 - 1902bp）。其中包括来自所有八个属的18种脂头甲族甲虫以及三个外类群。通过在POY4程序中直接优化以及对合并数据进行分区贝叶斯分析，分别对序列和形态特征进行了分析。合并数据在同等加权下的直接优化（DO）树，其不一致长度差异值也最小，结果显示脂头甲族为单系群，具有以下系统发育关系模式（外类群（（拟隐头甲属，伊氏隐头甲属）（副裸甲属（（裸甲属，卤甲属）（脂头甲属，双甲属）））））。使用16种不同参数集对合并数据进行的敏感性分析表明，在所有参数集下，脂头甲族及其所有属均为单系群。贝叶斯分析与同等加权下的DO树相比，仅在副裸甲属和分支（裸甲属 + 卤甲属）的位置上存在拓扑差异，二者位置颠倒。讨论了脂头甲族的历史生物地理学以及潮间带栖息地的逐步进化定殖。基于生物地理学分析，我们推测脂头甲族的祖先出现在泛太洋沿岸，泛太洋是太平洋的直接前身，随后从古北区多次扩散到新北区。我们还推测脂头甲族的祖先似乎起源于海滩的潮间带区域，然后通过高潮带到中潮带区域，后来定殖到低潮带的岩石礁区域。©威利·亨尼希协会2009年。
