8种短鼻蝗线粒体COⅡ基因序列的分析研究(直翅目:蝗总科:癞蝗科)  

Analyses and Studies of Gene Sequences on the 8 species of Filchnerella based on the Mitochondrial Cytochrome Oxidase Ⅱ Gene(Orthoptera:Acridoidea:Pamphagidae)

作　　者：张道川[1] 徐淼洋[1] 李新江[1] 郑金玉[1] 

机构地区：[1]河北大学生命科学学院,河北保定071002

出　　处：《四川动物》2008年第5期761-763,共3页Sichuan Journal of Zoology

基　　金：国家自然科学基金项目(30770263);河北大学博士基金项目(Y2007090)资助

摘　　要：扩增并测定了我国癞蝗科短鼻蝗属8种蝗虫的线粒体COⅡ基因序列(585bp),利用ClustalX和MEGA对序列的碱基组成、转换颠换、遗传距离等进行分析,探讨了COⅡ基因在该属的分子进化特征。结果显示:碱基组成上,A+T含量较高,为70.4%,其中密码子第3位A+T含量最高,达到81.9%;在氨基酸组成上,变异率为12.8%;短鼻蝗属8种昆虫的遗传距离在0.003～0.111之间。The mtDNA CO Ⅱ gene partial sequences （585 bp） of 8 Filchnerella species were amplified and sequenced. Nucleotides composition, transition and transversion, genetic distance of this segment had been analyzed. The molecular evolution characteristic of CO Ⅱ gene in Filchnerella was discussed. The results indicate that average A ＋ T content of CO Ⅱ gene in Filchnerella is 70.4% , which shows strong A ＋ T bias. The variation ratio of amino acid is 12.8%. Genetic distances among genera are 0. 003 - 0.111.

关 键 词：短鼻蝗 癞蝗科 COⅡ基因 序列分析 

分 类 号：Q96[生物学—昆虫学]