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线粒体细胞色素氧化酶I (mt COI) 序列分析揭示扶桑绵粉蚧复合种存在隐存谱系
引用本文:褚栋,刘国霞,付海滨,徐卫.线粒体细胞色素氧化酶I (mt COI) 序列分析揭示扶桑绵粉蚧复合种存在隐存谱系[J].昆虫学报,2009,52(11):1261-1265.
作者姓名:褚栋  刘国霞  付海滨  徐卫
作者单位:1. 山东省农业科学院高新技术研究中心,山东省作物与畜禽品种改良生物技术重点实验室,济南250100;农业部黄淮海作物遗传改良与生物技术重点开放实验室济南250100
2. 沈阳出入境检验检疫局,沈阳,110016
3. 海南出入境检验检疫局,海口,570311
基金项目:National Basic Research and Development Program,Key Projects in the National Science&Technology Pillar Program in the Eleventh Five.Year Plan Period,Liaoning Entry-Exit Inspection and Quarantine Bureau Scientific Research Item 
摘    要:过去约20年间扶桑绵粉蚧Phenacoccus solenopsis Tinsley在许多国家造成严重危害。近年来该害虫传入我国, 对农业生产构成严峻威胁。外来入侵物种的快速准确鉴定是科学研究及其管理的基础。本研究对来自海南三亚和陵水地区的扶桑绵粉蚧的线粒体细胞色素氧化酶I (mt COI)测序并与美国佛罗里达州的扶桑绵粉蚧序列进行了比较。系统发育树表明该物种存在两个遗传支系, 即海南支系与佛罗里达支系; 这两个支系的遗传距离约3%。这是利用mt COI分子标记对我国扶桑绵粉蚧的首次分子鉴定. 这些结果提示:(1)扶桑绵粉蚧可能是至少含有两个隐存谱系或姊妹种的复合种; (2)新入侵我国海南三亚和陵水地区的扶桑绵粉蚧是该复合种内的一个隐存谱系或物种, 且海南三亚和陵水种群可能不是来自美国佛罗里达州。扶桑绵粉蚧隐存谱系的发现对于该物种的分子鉴定及其入侵生态学研究具有重要意义。

关 键 词:扶桑绵粉蚧  生物入侵  复合种  隐存谱系  mt  COI  系统发育分析  

Phylogenetic analysis of mt CO I reveals the cryptic lineages in Phenacoccus solenopsis complex (Hemiptera:Pseudococcidae)
CHU Dong,LIU Guo-Xia,FU Hai-Bin,XU Wei.Phylogenetic analysis of mt CO I reveals the cryptic lineages in Phenacoccus solenopsis complex (Hemiptera:Pseudococcidae)[J].Acta Entomologica Sinica,2009,52(11):1261-1265.
Authors:CHU Dong  LIU Guo-Xia  FU Hai-Bin  XU Wei
Abstract:The mealybug species,Phenacoccus solenopsis Tinsley has caused severe economic losses during the last two decades in many countries.Recently this alien invasive species has been introduced in China and threatened the agricultural production.The rapid and accurate identification of the species has been the basis of the scientific research and management of the alien invasive species(IAS).In this study,the mitochondrial cytochrome oxidase subunit I (mt CO I)of the P.solenopsis materials collected from Sanya City and Lingshui County,Hainan Province were sequenced and compared with the known sequences of the species from Florida of the USA.We unexpectedly found that there were two divergent clades in the mealybug species,PI solenopsis,based on the phylogenetic tree.The genetic distance between the collections from China and those from the USA was approximately 3%.,This was the first report on the molecular identification of P.solenopsis in China based on the mt CO I marker.These data suggest that P.solenopsis might be a species complex which includes at least two cryptic lineages or sibling species.The newly collected P.solenopsis materials from Sanya and Lingshui are of a cryptic lineage or species in the complex.The data also suggest the source of Sanya and Lingshui populations of P.solenopsis in the present study might not come from Florida of the USA.The discovery of the cryptic lineages in P.solenopsis complex is helpful for its accurate identification and the future research in its invasion ecology.
Keywords:mt COI  Phenacoccus solenopsis  biological invasion  species complex  cryptic lineages  mt CO I marker  phylogenetic analysis
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