A standardized reanalysis of molecular phylogenetic hypotheses of Gobioidei
A standardized reanalysis of molecular phylogenetic hypotheses of Gobioidei
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DOI：
10.1080/14772000.2012.699477
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发表时间：
2012-01-01
影响因子：
1.9
通讯作者：
Rueber, Lukas
中科院分区：
文献类型：
--
作者：
Agorreta, Ainhoa;Rueber, Lukas
虎鱼亚目是鲈形鱼类的一个亚目，全世界约有2000种。尽管在进化和生态上的重要性，它们的系统发育的内部和内部关系仍然知之甚少。只有少数的研究（无论是形态学或分子）已经解决了作为一个整体的Gobioidei的生殖。其中，迄今为止只有六项研究基于分子数据（每项研究都使用不同的分类单元采样，基因，外群和系统发育推断方法）解决了虎鱼的内部关系，产生了关于主要谱系之间系统发育关系的对比结果。在这项研究中，我们重新分析了这些分子系统发育研究的Gobioidei的标准化标准下的数据（相同的外群和系统发育推断的方法），以评估其结果的鲁棒性，以及确定哪些部分的gobioid树是最少解决。在这项研究中重新分析的所有数据集的结果通常是相似的，各自的原始研究，并建议广泛的模式之间的系统发育关系的虾虎鱼谱系。然而，四项研究之间存在许多拓扑差异，许多系统发育关系的支持率较低，拓扑测试无法拒绝绝大多数测试的替代拓扑。数据集的连接产生了相对稳健的Gobioidei主要谱系的同源性，但存在一些重叠和缺失数据的问题，这些问题通过包含来自GenBank的额外同源序列来改善，从而增加数据集的完整性。由于主要虾虎鱼类群的单系性和它们之间的系统发育关系都不能完全解决，很明显，需要进一步的系统发育研究，这应该伴随着虾虎鱼亚科的重大分类修订。尽管如此，即使现有的分子系统相对不稳定，也有一些单系单位可以被识别，并且虎鱼科树的基本结构似乎很明显。
Gobioidei is a suborder of perciform fishes with about 2000 species distributed worldwide. Despite the evolutionary and ecological importance of gobioids, their phylogenetic inter-and intrarelationships are still poorly understood. Only a few studies (either morphological or molecular) have tackled the phylogeny of Gobioidei as a whole. Of these, only six studies thus far have addressed gobioid intrarelationships based on molecular data (each using different taxon sampling, genes, outgroups and method of phylogenetic inference), yielding contrasting results regarding the phylogenetic relationships among major lineages. In this study, we have reanalysed data from four of these molecular phylogenetic studies of Gobioidei under standardization criteria (same outgroup and methods of phylogenetic inference) in order to assess the robustness of their results, as well as to identify which parts of the gobioid tree are least resolved. Results from all datasets reanalysed in this study are generally similar to those of the respective original studies, and suggest broad patterns of phylogenetic relationships among gobioid lineages. However, there are numerous topological discrepancies among the four studies, support is low for many phylogenetic relationships and topology tests are unable to reject the vast majority of alternative topologies tested. The concatenation of datasets yields a relatively robust phylogeny of major lineages of Gobioidei, but there are some issues of overlap and missing data, which are ameliorated with the inclusion of additional homologous sequences from GenBank that increase dataset completeness. Because both monophyly of major gobioid groups and phylogenetic relationships among them cannot be fully resolved, it is clear that further phylogenetic research is needed, and this should be accompanied by a major taxonomic revision of the Gobioidei. Nevertheless, even with the relatively unstable nature of the available molecular phylogenies, there are some monophyletic units that can be identified, and a basic structure of the gobioid tree appears evident.