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Abstract
The complete mitochondrial genome sequence of the hybrid of Ctenopharyngodon idella (♀) × Squaliobarbus curriculus (♂) was determined using PCR-based method. The total length of the mitogenome is 16,609 bp. It contains the typical structure as that of most other vertebrates, including 2 ribosomal RNA genes, 13 protein-coding genes, 22 transfer RNA genes, and 1 non-coding control region (D-loop region). The overall composition of the mitogenome was estimated to be 31.86% for A, 26.08% for T, 26.38% for C, and 15.68% for G, respectively, indicating that an A+T (57.94%)-rich feature occurs in the hybrid mitogenome. Both the termination-associated sequence and three conserved sequence blocks (CSB1, CSB2, and CSB3) were also detected in the D-loop region.
Declaration of interest: This study was supported by the National Natural Science Foundation of China (No. 31272652) and National High Technology Research and Development Program of China (2011AA100404). The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.