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Forensic Applications of the Sequencing of Mitochondrial DNA Cytochrome Oxidase Subunit Ⅰ Gene for Sarcosaphagous Flies (Diptera) in Huhhot and Dunhuang District
Author(s): CAI Jifeng, DONG Jianguo, LIU Min, YING Binwu, TAO Tao, PAN Hongfu, ZHANG Lin, ZUO Hongtao, ZHANG Jialing, LIAO Zhigang
Pages: 100-
103,106
Year: 2005
Issue:
2
Journal: JOURNAL OF FORENSIC MEDICINE
Keyword: 嗜尸性苍蝇; 种属鉴定; 线粒体DNA; 细胞色素氧化酶辅酶Ⅰ;
Abstract: 目的通过对嗜尸性苍蝇线粒体DNA(mtDNA)上细胞色素氧化酶辅酶Ⅰ(CO Ⅰ)中278bp基因序列的分析,对其成虫及其幼虫、蛹、卵的种属进行鉴定,解决依据形态学方法难以鉴定的难题.方法随机分别采集呼和浩特和甘肃敦煌地区兔和猪尸体上的嗜尸性苍蝇、幼虫、蛹及其腹中的卵,提取其mtDNA,经PCR扩增、产物检测与纯化、测序等,进行序列分析和构建系统发育树.结果双翅目嗜尸性苍蝇的种内基因差异均数小于1%,种间差异均数大于3%,成虫与幼虫、蛹、卵之间无显著性差异.结论mtDNA上CO Ⅰ序列分析均可以有效地对嗜尸性苍蝇及其幼虫、蛹、卵进行种属鉴定,方法快速、简便和精确,可作为法医学嗜尸性苍蝇种属鉴别的可靠方法.
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