Du Yanyan, Su Zijun, Yang Zhuoyu, Zhang Yanping, Lou Zhongyu, Yang Shunwen, Wang Tai
Gansu Fishery Resources and Environment in the Upper Reaches of the Yellow River Observation and Research Station, Gansu Fisheries Research Institute, Lanzhou, China.
Mitochondrial DNA B Resour. 2024 Feb 22;9(2):300-303. doi: 10.1080/23802359.2024.2318401. eCollection 2024.
, a member of the eponymous genus within the Cyprinidae, family of the Cypriniformes order, is an endemic fish species found exclusively in the upper reaches of the Yellow River, spanning from Yinchuan to Lanzhou. This study presents the first comprehensive report of the complete mitochondrial genome sequence of , encompassing 16,604 base pairs (bp) with a nucleotide composition of 26.3% cytosine (C), 17.6% guanine (G), 29.4% adenine (A), and 26.7% thymine (T). In congruence with other species in the genus, its mitochondrial genome comprises 37 genes, including two ribosomal RNA genes, 13 protein-coding genes (PCGs), and 22 transfer RNA genes. Notably, initiates with the start codon GTG, distinct from the typical ATG start codon of other PCGs. The mitogenome exhibits four types of stop codons: TAA, TAG, TA-, and T--. Phylogenetic analyses, grounded in complete mitochondrial sequences, position the forefront of one of two major clusters within the genus , corroborating existing morphological classifications. These findings offer valuable theoretical insights for the taxonomic classification, conservation, and population genetics of
鲤形目鲤科中同名属的成员，是一种仅在黄河上游（从银川到兰州）发现的特有鱼类。本研究首次全面报道了该物种完整的线粒体基因组序列，其长度为16,604个碱基对（bp），核苷酸组成为：胞嘧啶（C）26.3%、鸟嘌呤（G）17.6%、腺嘌呤（A）29.4%、胸腺嘧啶（T）26.7%。与该属的其他物种一致，其线粒体基因组由37个基因组成，包括两个核糖体RNA基因、13个蛋白质编码基因（PCGs）和22个转运RNA基因。值得注意的是，该物种的蛋白质编码基因以GTG起始密码子开始，这与其他蛋白质编码基因典型的ATG起始密码子不同。该线粒体基因组表现出四种终止密码子类型：TAA、TAG、TA-和T--。基于完整线粒体序列的系统发育分析将该物种置于该属两个主要类群之一的前沿，证实了现有的形态学分类。这些发现为该物种的分类学分类、保护和群体遗传学提供了有价值的理论见解。
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