Mitogenomic circumscription of a novel percomorph fish clade mainly comprising "Syngnathoidei" (Teleostei)
Mitogenomic circumscription of a novel percomorph fish clade mainly comprising "Syngnathoidei" (Teleostei)
复制标题
DOI：
10.1016/j.gene.2014.03.040
复制
发表时间：
2014-06-01
期刊：
影响因子：
3.5
通讯作者：
Nishida, Mutsumi
中科院分区：
文献类型：
--
作者：
Song, Ha Yeun;Mabuchi, Kohji;Nishida, Mutsumi
Percomorpha，约占现代硬骨鱼类的60%，被描述为树的“（未解决的）灌木”，由于巨大的多样性（> 15，000种），其内部关系仍然不明确。然而，最近的分子系统发育研究的基础上广泛的分类和字符采样，揭示了一些意想不到的分支Percomorpha，其中之一是由海龙（海马，海龙，和他们的亲戚）加上几个群体分布在三个不同的目的。为了更明确地界定该分支，我们参考以前的研究和新确定的全线粒体基因组（mitogenome）序列的16 percomorph物种跨越海龙类，dactropterids，和他们的pueromyoidei密切相关的鱼类（Mullidae，Callionymoidei，Malacanthidae）取样几个候选类群。对来自这16个物种加上78个percomorphs和两个外类群（总共96个物种）的明确比对序列（13，872 bp）进行分区贝叶斯和最大似然分析。由此产生的树揭示了一个高度支持的分支，包括七个家庭在海龙（Gasterosteiformes），Dactopteridae（Scorpaeniformes），Mullidae在Percoidei和两个家庭在Callionymoidei（Perciformes）。根据最新的细胞核DNA研究结果，我们建议将该分支命名为海龙形目。(C)2014爱思唯尔有限公司版权所有。
Percomorpha, comprising about 60% of modern teleost fishes, has been described as the "(unresolved) bush at the top" of the tree, with its intrarelationships still being ambiguous owing to huge diversity (>15,000 species). Recent molecular phylogenetic studies based on extensive taxon and character sampling, however, have revealed a number of unexpected clades of Percomorpha, and one of which is composed of Syngnathoidei (seahorses, pipefishes, and their relatives) plus several groups distributed across three different orders. To circumscribe the clade more definitely, we sampled several candidate taxa with reference to the previous studies and newly determined whole mitochondrial genome (mitogenome) sequences for 16 percomorph species across syngnathoids, dactylopterids, and their putatively closely-related fishes (Mullidae, Callionymoidei, Malacanthidae). Unambiguously aligned sequences (13,872 bp) from those 16 species plus 78 percomorphs and two outgroups (total 96 species) were subjected to partitioned Bayesian and maximum likelihood analyses. The resulting trees revealed a highly supported clade comprising seven families in Syngnathoidei (Gasterosteiformes), Dactylopteridae (Scorpaeniformes), Mullidae in Percoidei and two families in Callionymoidei (Perciformes). We herein proposed to call this clade "Syngnathiformes" following the latest nuclear DNA studies with some revisions on the included families. (C) 2014 Elsevier B.V. All rights reserved.