Phylogenetic analysis of three Odontotermes holmgern based on mitochondrial COn sequences

Phylogenetic and sequence analysis of Cytochrome Oxidase Subunit II gene (CO gene) were conducted to elucidate the relationships among 15 populations of 3 species Odontotermes from Hainan province. The results showed that the sequence identification of inter-species of Odontotermes ranged from 92.5% to 95.1%, and divergence ranged from 5.1% to 8.1%; while different populations of O. formosanus and O. hainanensis ranged from 97% to 99.9% and 98.4% to 100%, and divergence ranged from 0.1% to 3.0% and 0% to 1.6%. The sequence of Odontotermes sp. Yach shared 95.4% identification and closely genetic relationship with O. javanicus, a species from Japan. CO gene of genus Odontotermes showed high AT composition, which reached to 61.4%, and the main base variation was transversion .