Nucleotide composition analysis indicated a strong bias against guanine (G) in the three fragments, especially in the third codon positions of COI and Cyt b gene.

• 核苷酸组成分析结果表明：3个目的片段的鸟嘌呤（G）含量普遍较低，在两个蛋白编码基因第三密码子位点上表现得尤为明显。