Complete mitochondrial genome of Tundra swan Cygnus columbianus jankowskii (Anseriformes: Anatidae)

Abstract

Cygnus columbianus jankowskii is a subspecies of Tundra swan, which breeds in eastern Russia and northeast China, wintering in the middle and lower reaches of the Yangtze River. In this study, we used PCR-based method to obtain the complete mtDNA of this subspecies. The arrangement pattern of the complete mtDNA is identical with typical bird species, which is the shortest (16,723 bp) in three subspecies. The length of the PCGs is same except ND2, ND3 and ND6, and the initiation/termination codons are all same with other subspecies. The length of 12S rRNA and 16S rRNA is same with C. c. columbianus, but different from C. c. bewickii. The length and structure of all tRNAs are the same with other subspecies except for tRNA^Ile, tRNA^leu(CUN) and tRNA^ser(AGY). The control region is located between tRNA^Phe and tRNA^Glu, but the length is different with others.

• Anseriformes
• complete mitogenome
• Cygnus columbianus jankowskii

Declaration of interest

The authors report no conflicts of interest. The authors are also responsible for the content and writing of the paper alone. This work was supported by the National Science Foundation of China (Grant no. 31172117) and The National College students' Innovative Program of China (Grant no. 201310357037).