The yellowtail rasbora ( Rasbora tornieri ) is a miniature ray-finned fish categorized under the genus Rasbora in the family of Cyprinidae. In this study, a complete mitogenome sequence of R. tornieri was sequenced using four primers targeting two halves of the mitogenome with overlapping flanking regions. The size of mitogenome was 16,573 bp, housing 22 transfer RNA genes, 13 protein-coding genes, two ribosomal RNA genes and a putative control region. Identical gene organization was detected between this species and other members of Rasbora genus. The heavy strand encompassed 28 genes while the light strand accommodated the other nine genes. Most protein-coding genes execute ATG as start codon, excluding COI and ND3 genes, which utilized GTG instead. The central conserved sequence blocks (CSB-E, CSB-F and CSB-D), variable sequence blocks (CSB-1, CSB-3 and CSB-2) as well as the terminal associated sequence (TAS) were conserved within the control region. The maximum likelihood phylogenetic family tree revealed the divergence of R. tornieri from the basal region of the Rasbora clade, where its evolutionary relationships with other Rasbora members are poorly resolved as indicated by the low bootstrap values. This work acts as window for further population genetics and molecular evolution studies of Rasbora genus in future.

中文翻译：

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Rasbora torneri（鲤形目：鲤科：Rasbora）完整有丝分裂基因组DNA的测序和表征及其进化意义

鰤鱼 ( Rasbora tornieri ) 是一种微型鳍鱼，归类在鲤科鱼类中的鱼属。在这项研究中，使用针对有重叠侧翼区域的有丝分裂基因组的两半的四个引物对 R. tornieri 的完整有丝分裂基因组序列进行了测序。有丝分裂基因组的大小为 16,573 bp，包含 22 个转移 RNA 基因、13 个蛋白质编码基因、两个核糖体 RNA 基因和一个推定的控制区。在该物种和 Rasbora 属的其他成员之间检测到相同的基因组织。重链包含 28 个基因，而轻链包含其他 9 个基因。大多数蛋白质编码基因将 ATG 作为起始密码子执行，但 COI 和 ND3 基因除外，它们使用 GTG 代替。中央保守序列块（CSB-E、CSB-F 和 CSB-D）、可变序列块（CSB-1、CSB-3 和 CSB-2) 以及末端相关序列 (TAS) 在控制区域内是保守的。最大似然系统发育家谱揭示了 R. tornieri 与 Rasbora 进化枝的基底区域的分歧，其与其他 Rasbora 成员的进化关系很难解决，如低引导值所示。这项工作为未来进一步研究 Rasbora 属的种群遗传学和分子进化提供了窗口。