Si Li-Zhen, Gong Li, Shi Wei, Yang Min, Kong Xiao-Yu
a Key Laboratory of Tropical Marine Bio-Resources and Ecology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , Guangzhou , PR China , and.
b University of Chinese Academy of Sciences , Beijing , PR China.
Mitochondrial DNA A DNA Mapp Seq Anal. 2017 Jan;28(1):58-59. doi: 10.3109/19401736.2015.1110797. Epub 2015 Dec 18.
The Pseudorhombus dupliocellatus belongs to family Paralichthyidae of Pleuronectiformes. In this study, the complete mitochondrial genome of P. dupliocellatus is determined and described. The mitogenome is 16 621 bp in length and consists of 13 protein-coding genes, 22 tRNAs, 2 rRNAs, a control region, and a L-strand replication origin. The arrangement of the mitogenome is identical to that of the typical teleost. The overall base composition is 26.9%, 25.3%, 31.0%, and 16.8% for A, T, C, and G, respectively, with a slight bias on A+T content (52.2%). The phylogenetic tree of 13 species all in Pleuronectiformes demonstrated that P. dupliocellatus, as well as the other Paralichthyidae fishes containing Paralichthys olivaceus and Pseudorhombus cinnamoneus, clustered in a clade and had a closer relationship with Pleuronectidae species than Bothidae ones. This study is expected to contributing to the systematic evolution of Paralichthyidae and further Pleuronectiformes.
双瞳斑鲆属于鲽形目牙鲆科。在本研究中，测定并描述了双瞳斑鲆的完整线粒体基因组。该线粒体基因组长度为16621 bp，由13个蛋白质编码基因、22个tRNA、2个rRNA、一个控制区和一个轻链复制起点组成。线粒体基因组的排列与典型硬骨鱼的排列相同。总体碱基组成为A占26.9%、T占25.3%、C占31.0%、G占16.8%，A+T含量略有偏向（52.2%）。对所有鲽形目的13个物种构建的系统发育树表明，双瞳斑鲆以及其他包含褐牙鲆和桂皮斑鲆的牙鲆科鱼类聚为一个分支，与鲽科物种相比，它们与鲆科物种的关系更为密切。本研究有望为牙鲆科以及进一步为鲽形目的系统进化做出贡献。
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