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Abstract
In this study, the complete mitogenome sequence of small silver gugeon Squalidus gracilis has been amplified. The mitogenome, consisting of 16,605 base pairs (bp), had the typical vertebrate mitochondrial gene arrangement, including 13 protein-coding genes, 22 transfer RNAs, 2 ribosomal RNAs genes and a non-coding control region (CR). CR of 928 bp length is located between tRNAPro and tRNAPhe. The overall base composition of S. gracilis is 29.8% for A, 27.6% for C, 25.7% for T and 16.9% for G, with higher AT content of 55.5%. The complete mitogenome may provide rather essential and important DNA molecular data for further phylogenetic analysis for not only congeneric species but also higher different taxa of Cyprinid fishes.
Declaration of interest
The authors declare no competing materials in the preparation and execution of this manuscript. The authors are responsible for the content and writing of this paper. The corresponding author (ISC) wishes to thank for the partial grant support for aquatic Biodiversity Research Team from CEO, NTOU. The current work was also supported from the project grants of National Science Council, Taipei, for the corresponding author.