卵形鲹（鲹科：鲹属）的线粒体基因组：基因组特征与系统发育分析
Mitochondrial genome of the Torpedo scad Megalaspis cordyla (Perciformes: Carangidae): genome characterization and phylogenetic consideration.
作者信息
Li Min, Li Yufang, Chen Zuozhi
机构信息
a South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science , Guangzhou , P. R. China and.
b Scientific Observing and Experimental Station of South China Sea Fishery Resources and Environments, Ministry of Agriculture , Guangzhou , P. R. China.
出版信息
Mitochondrial DNA A DNA Mapp Seq Anal. 2016 May;27(3):1856-7. doi: 10.3109/19401736.2014.971258. Epub 2014 Oct 16.
This study presented the complete mitochondrial genome of the Torpedo scad Megalaspis cordyla, the only member of its genus, as well as its phylogenetic position in Carangidae. The genome is 16,566 bp containing the usual 2 rRNA genes, 13 protein-coding genes, 22 tRNA genes, and 1 control region. Gene organization is similar to that observed in most other vertebrates. Gene overlapping and separating were also observed in M. cordyla mitogenome. The overall base compositions of mitogenome was 28.83% A, 25.81% T, 15.93% G, and 29.43% C. Phylogenetic analyses using the concatenated sequence of the protein-coding genes of the reported Carangidae mitogenome showed similar results in the neighbour-joining and Bayesian inference trees. Three clades were formed as Subfamilies Caranginae, Seriolinae and Trachinotinae in Carangidae. M. cordyla was most closely related to the species in genus Caranx.
本研究展示了卵形鲹（Megalaspis cordyla）的完整线粒体基因组，它是该属的唯一成员，同时还展示了其在鲹科中的系统发育位置。该基因组为16,566 bp，包含常见的2个rRNA基因、13个蛋白质编码基因、22个tRNA基因和1个控制区。基因组织与大多数其他脊椎动物中观察到的相似。在卵形鲹线粒体基因组中也观察到了基因重叠和间隔。线粒体基因组的总体碱基组成为：A占28.83%、T占25.81%、G占15.93%、C占29.43%。使用已报道的鲹科线粒体基因组蛋白质编码基因的串联序列进行的系统发育分析在邻接法和贝叶斯推断树中显示出相似的结果。在鲹科中形成了三个分支，分别为鲹亚科（Caranginae）、乌鲹亚科（Seriolinae）和竹荚鱼亚科（Trachinotinae）。卵形鲹与鰤属（Caranx）的物种关系最为密切。
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