Statistics of sequence compositions and nucleotide substitutions were obtained using MEGA2.1. PAUP*4.0blO (PPC) was used to evaluate the phylogenetic information content of the data and reconstruct NJ, MP and ML trees.

• PAUP~*4.；0b10(PPC)对数据集系统发育信号进行评估，并以NJ、MP，ML和贝叶斯系统发育推论法分别重建系统发生树。