Dataset Information

The complete mitochondrial genome sequence of Schizothorax dulongensis (Cypriniformes, Cyprinidae) from Irrawaddy River in China.

ABSTRACT: Schizothorax dulongensis Huang (1985) is an endemic species in China, which is mainly distributed in the Irrawaddy River and its tributaries. In this study, the complete mitochondrial genome was sequenced. Its length is 16,579 bp, containing 22 tRNAs, two rRNAs, and 13 PCGs. The phylogenetic results showed that S. dulongensis and these species from Brahmaputra River clustered a clade, and supported the Brahmaputra River and the Irrawaddy River have been reorganized of drainage.

SUBMITTER: Song Y

PROVIDER: S-EPMC8381953 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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The complete mitochondrial genome sequence of Schizothorax dulongensis (Cypriniformes, Cyprinidae) from Irrawaddy River in China.

Song Yuchao Y Li Songtao S Gu Haoran H Wang Zhijian Z

Mitochondrial DNA. Part B, Resources 20210818 9

Schizothorax dulongensis Huang (1985) is an endemic species in China, which is mainly distributed in the Irrawaddy River and its tributaries. In this study, the complete mitochondrial genome was sequenced. Its length is 16,579 bp, containing 22 tRNAs, two rRNAs, and 13 PCGs. The phylogenetic results showed that S. dulongensis and these species from Brahmaputra River clustered a clade, and supported the Brahmaputra River and the Irrawaddy River have been reorganized of drainage. ...[more]

PMID: 34435129

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Project description:Schizothorax kozlovi is an endemic and vulnerable fish species found in the upper Yangtze River in China. Over the past few years, the population resources of S. kozlovi have been nearly completely depleted owing to multiple contributing threats. While the complete mitochondrial genomes serve as important molecular markers for phylogenetic and genetic studies, the mitochondrial genome of S. kozlovi has still received little attention. In this study, we analyzed the characterization of the mitochondrial genome of S. kozlovi and investigated the phylogenetic relationships of Schizothorax. The complete mitochondrial genome of S. kozlovi was 16,585 bp in length, which contained thirty-seven genes (thirteen protein-coding genes (PCGs), two ribosomal RNA genes (rRNAs), twenty-two transfer RNA genes (tRNAs)) and two non-coding regions for the origin of light strand (OL) and the control region (CR). There were nine overlapping regions and seventeen intergenic spacers regions in the mitochondrial genome. The genome also showed a bias towards A + T content (55.01%) and had a positive AT-skew (0.08) and a negative GC-skew (-0.20). All the PCGs employed the ATG or GTG as the start codon and TAA, TAG, or single T as the stop codon. Additionally, all of the tRNAs displayed a typical cloverleaf secondary structure, except trnS1 which lacked the D arm. The phylogenetic analysis, based on the maximum likelihood (ML) and Bayesian inference (BI) methods, revealed that the topologies of the phylogenetic tree divided the Schizothorax into four clades and did not support the classification of Schizothorax based on morphology. The phylogenetic status of S. kozlovi was closely related to that of S. chongi. The present study provides valuable genomic information for S. kozlovi and new insights in phylogenetic relationships of Schizothorax. These data could also offer fundamental references and guidelines for the management and conservation of S. kozlovi and other species of Schizothorax.

Dataset Information

The complete mitochondrial genome sequence of Schizothorax dulongensis (Cypriniformes, Cyprinidae) from Irrawaddy River in China.

Publications

The complete mitochondrial genome sequence of <i>Schizothorax dulongensis</i> (Cypriniformes, Cyprinidae) from Irrawaddy River in China.

Similar Datasets

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