Characterization of the Complete Mitochondrial Genome of the Spotted Catfish Arius maculatus (Thunberg, 1792) and Its Phylogenetic Implications
文献类型： 外文期刊
作者： Yang, Min 1 ; Yang, Zimin 1 ; Liu, Cuiyu 1 ; Lee, Xuezhu 1 ; Zhu, Kecheng 2 ;
作者机构： 1.South China Agr Univ, Coll Marine Sci, Joint Lab Guangdong Prov & Hong Kong Reg Marine Bi, Guangzhou 510642, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Minist Agr, Guangzhou 510300, Peoples R China
关键词： Arius maculatus; mitochondrial genome; RSCU; Ka; Ks; phylogenetic analysis
期刊名称：GENES （ 影响因子：4.141； 五年影响因子：4.474 ）
ISSN：
年卷期： 2022 年 13 卷 11 期
页码：
收录情况： SCI
摘要： The spotted catfish, Arius maculatus (Siluriformes), is an important economical aquaculture species inhabiting the Indian Ocean, as well as the western Pacific Ocean. The bioinformatics data in previous studies about the phylogenetic reconstruction of Siluriformes were insufficient and incomplete. In the present study, we presented a newly sequenced A. maculatus mitochondrial genome (mtDNA). The A. maculatus mtDNA was 16,710 bp in length and contained two ribosomal RNA (rRNA) genes, thirteen protein-coding genes (PCGs), twenty-two transfer RNA (tRNA) genes, and one D-loop region. The composition and order of these above genes were similar to those found in most other vertebrates. The relative synonymous codon usage (RSCU) of the 13 PCGs in A. maculatus mtDNA was consistent with that of PCGs in other published Siluriformes mtDNA. Furthermore, the average non-synonymous/synonymous mutation ratio (Ka/Ks) analysis, based on the 13 PCGs of the four Ariidae species, showed a strong purifying selection. Additionally, phylogenetic analysis, according to 13 concatenated PCG nucleotide and amino acid datasets, showed that A. maculatus and Netuma thalassina (Netuma), Occidentarius platypogon (Occidentarius), and Bagre panamensis (Bagre) were clustered as sister clade. The complete mtDNA of A. maculatus provides a helpful dataset for research on the population structure and genetic diversity of Ariidae species.
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