Thacker Christine E, Satoh Takashi P, Katayama Eri, Harrington Richard C, Eytan Ron I, Near Thomas J
Research and Collections, Section of Ichthyology, Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA 90007, USA.
National Museum of Nature and Science, Tsukuba City, Ibaraki 305-0005, Japan.
Mol Phylogenet Evol. 2015 Dec;93:172-9. doi: 10.1016/j.ympev.2015.08.001. Epub 2015 Aug 8.
The percomorph fish clade Gobiiformes is a worldwide, tropical and temperate radiation with species occupying nearly all aquatic, and some semi-terrestrial, habitats. Early molecular phylogenetic studies led to the discovery of Gobiiformes, which contains Gobioidei, the gobies and sleepers, and a clade (Apogonoidei) consisting of Apogonidae and Kurtus, the cardinalfishes and nurseryfishes. Gobioidei is consistently resolved as monophyletic in molecular studies, and includes eight families whose members range from waterfall climbing stream gobies to several prominent lineages inhabiting coral reefs. The sister taxon to Gobioidei is also reliably resolved as Apogonoidei. Despite the consistent support for gobiiform monophyly in molecular studies, it is not known if percomorph lineages unsampled in molecular phylogenetic studies are closely related to Gobioidei or Apogonoidei. Here we assemble a large dataset of DNA sequence from ten protein-coding genes, sampling widely across Acanthomorpha and Percomorpha, including Gobioidei, Apogonidae, and Kurtus, along with representatives of all twelve families comprising the former Trachinoidei. The phylogenies inferred from the nuclear gene sequences show that Trachinoidei is polyphyletic, with constituent lineages spread widely among several major percomorph clades. Most notably, the sanddivers (Trichonotus) are resolved as the sister lineage of Gobioidei. This study clarifies the phylogenetic relationships of lineages previously classified in Trachinoidei, identifies Trichonotus as the sister lineage of gobies, provides a molecular phylogeny of the major lineages of Gobioidei, and offers suggested changes to percomorph classification.
鲈形目鱼类分支虾虎鱼亚目是一个分布于全球热带和温带的类群，其物种占据了几乎所有的水生栖息地以及一些半陆地栖息地。早期的分子系统发育研究促成了虾虎鱼亚目的发现，该亚目包含虾虎鱼科和塘鳢科，以及一个由天竺鲷科和乳香鱼科（天竺鲷和乳香鱼）组成的分支（天竺鲷亚目）。在分子研究中，虾虎鱼亚目一直被确定为单系类群，包括八个科，其成员从能攀爬瀑布的溪流虾虎鱼到栖息在珊瑚礁中的几个重要谱系。虾虎鱼亚目的姐妹分类单元也被可靠地确定为天竺鲷亚目。尽管分子研究一直支持虾虎鱼亚目的单系性，但在分子系统发育研究中未取样的鲈形目谱系是否与虾虎鱼亚目或天竺鲷亚目密切相关尚不清楚。在这里，我们汇集了一个来自十个蛋白质编码基因的大型DNA序列数据集，广泛取样于棘鳍总目和鲈形目，包括虾虎鱼亚目、天竺鲷科和乳香鱼科，以及组成原鲹形目的所有十二个科的代表。从核基因序列推断出的系统发育表明，鲹形目是多系的，其组成谱系广泛分布在几个主要的鲈形目分支中。最值得注意的是，沙潜水鱼（线塘鳢属）被确定为虾虎鱼亚目的姐妹谱系。这项研究阐明了先前归类于鲹形目的谱系的系统发育关系，确定线塘鳢属为虾虎鱼的姐妹谱系，提供了虾虎鱼亚目主要谱系的分子系统发育，并对鲈形目分类提出了建议性的更改。
