| 利用16S rDNA序列鉴定常见嗜尸性蝇类种属 |
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| 引用本文： | 陈凤磊,蔡继峰,郭亚东,常云峰,杨立.利用16S rDNA序列鉴定常见嗜尸性蝇类种属[J].中国法医学杂志,2011,26(5):362-364. |
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| 作者姓名： | 陈凤磊 蔡继峰 郭亚东 常云峰 杨立 |
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| 作者单位： | 中南大学基础医学院法医学系,湖南长沙,410013 |
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| 基金项目： | 国家自然科学基金资助项目(30672354); 大学生教育创新基金(YC0913,YC10108,YC10118) |
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| 摘 要： | 目的通过分析16S rDNA 551bp基因序列,鉴定常见嗜尸性蝇类种属。方法随机采集17个地区放置于室外草地的家兔尸体上7个种24只嗜尸性苍蝇样本,经形态学鉴定种类后,提取胸肌DNA,对16S rDNA 551bp基因片段进行PCR扩增,产物纯化、测序后上传GenBank;利用MEGA 4.0软件构建序列间的系统发育树,分析建立种内及种间进化分歧表。结果 24只样本16S rDNA序列分析显示7种蝇类可以较好聚类;其中棕尾别麻蝇种内进化分歧整体均数为2.8%,家蝇为1.5%,丽蝇科的5个种均在0.7%以内。上述7个蝇种的种间进化分歧均数在1.6%～7.1%之间。其中,棕尾别麻蝇、家蝇与其它蝇类的种间分歧均数在4.0%～7.1%之间。结论本文分析结果显示,蝇种间同源性相差明显,采用mtDNA 16S rDNA中551bp基因序列分析,可进行蝇种鉴定。
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| 关 键 词： | 法医昆虫学 种类鉴别 16S rDNA 嗜尸性苍蝇 线粒体DNA |
Application of the identification of sarcosaphagous flies by analyses the sequence of 16SrDNA |
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| CHEN Fenglei,CAI Jifeng,GUO Yadong,CHANG Yunfeng,YANG Li.Application of the identification of sarcosaphagous flies by analyses the sequence of 16SrDNA[J].Chinese Journal of Forensic Medicine,2011,26(5):362-364. |
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| Authors: | CHEN Fenglei CAI Jifeng GUO Yadong CHANG Yunfeng YANG Li |
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| Institution: | (CHEN Fenglei,CAI Jifeng,GUO Yadong,CHANG Yunfeng,YANG Li/School of Basic Medical Sciences Central South University,Changsha 410013,China) |
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| Abstract: | Objective Identifing species of Sarcosaphagous flies by analyzing the amplified 551bp of 16S rDNA.Methods Twenty-four Samples of sarcossphagous flies belong to seven species on the corpses of rabbits were collected from seventeen districts.All samples were identified by entomologists using traditional morphological characteristics and then the Mitochondrial DNA of flies was extracted using the phenol chloroform extraction.Polymerase chain reactions were conducted on a Perkin-Elmer 9600 thermal cycler.PCR pr... |
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| Keywords: | forensic entomology species identification 16S rDNA sarcosaphagous flies mtDNA |
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