查询词典 phylogenetic development

OBJECTIVE ①To compare the sequences of the ribosomal rDNA-ITS2, 28S-D3 and mitochondrial mtDNA-COII in the different origins of Anopheles minimus for detecting the intra-and inter-specific variation of the sibling species of the Minimus Complex;②To reconstruct phylogenetic trees of the Minimus Complex and Myzomyia Series for determining the position of An.

目的 ①比较微小按蚊核糖体rDNA-ITS2、28S-D3基因和线粒体mtDNA-COII基因的序列差异，阐明微小按蚊复合体亲缘种种间和种内变异；②根据基因变异重建微小按蚊复合体及迈蚊系成员的种系发生关系，以确立微小按蚊亲缘种变异的种系地位；③建立微小按蚊复合体亲缘种A和C的分子鉴别方法。

OBJECTIVE ①To compare the sequences of the ribosomal rDNA-ITS2, 28S-D3 and mitochondrial mtDNA-COII in the different origins of Anopheles minimus for detecting the intra-and inter-specific variation of the sibling species of the Minimus Complex;②To reconstruct phylogenetic trees of the Minimus Complex and Myzomyia Series for determining the position of An. minimus A and C;③To establish specific methods for differentiation of two sibling species, An. minimus A and An. minimus C, of the Minimus Complex.

中文题名微小按蚊种群变异与分子鉴别研究副题名外文题名论文作者周水森导师汤林华研究员学科专业分子流行病学研究领域\研究方向学位级别博士学位授予单位中国预防医学科学院学位授予日期2002 论文页码总数98页关键词蚊微小按蚊馆藏号BSLW /2003 /R384 /3 目的①比较微小按蚊核糖体rDNA-ITS2、28S-D3基因和线粒体mtDNA-COII基因的序列差异，阐明微小按蚊复合体亲缘种种间和种内变异；②根据基因变异重建微小按蚊复合体及迈蚊系成员的种系发生关系，以确立微小按蚊亲缘种变异的种系地位；③建立微小按蚊复合体亲缘种A和C的分子鉴别方法。

The phylogenetic tree, based on 16S rDNA sequences, indicated that strains 117 and 43401 formed two distinct phyletic lines within the evolutionary radiation occupied by the genus Nocardia.

20株稀有放线菌的16S rDNA序列分析表明，分离菌株117、43401和12202与其相关种之间具有相对低的序列相似性，被选择以进行进一步的多相分类研究。

The phylogenetic analysis of these two nonmarine crabs together with intertidal, supratidal and swimming crabs based on portions of mitochondrial 16S rDNA sequences suggested that Grapsioidea, Ocypodoidea, Potamoidea and Portunoidea arose from a common marine ancestor, and the estimated divergence time are similar.

基于线粒体16S rDNA部分序列，对这2个类型的非海洋蟹类与潮间带蟹类、海洋蟹类之间的系统发生分析提示，方蟹总科、沙蟹总科、溪蟹总科和梭子蟹总科的蟹类起源于一个共同的海洋蟹类祖先，它们彼此之间的歧异时间基本一致。

Nosema antheraeae ; Ribosomal RNA gene ; ITS ; Organization ; Phylogenetic analysis

柞蚕微孢子；核糖体基因；转录间隔区；排列顺序；系统分析

In recent years, as methods of the molecular phylogeny widely used in the studies of systematics and phylogeny of Nymphalidae, the basic phylogenetic patterns of them have been clarified. However, up to the present, these studies, especially about the taxa distributed in China is rather scarce.

近年来，由于分子生物学在蛱蝶科系统分类中的广泛应用，蛱蝶科各主要类群间系统发生关系的格局逐步清晰，但国内蛱蝶科的分子系统学研究还十分匮乏。

Combined with phylogenetic reconstruction of the plant groups, and studies on ornithophily in these taxa, it is possible to elucidate the emergence and evolution of the bird-flower coevolution in the Old World.

结合植物类群的系统发育研究以及对其鸟类传粉现象的认识，可以系统地了解鸟类传粉在旧世界温带地区的起源与演化，以及鸟一花协同进化的过程。

Combined with phylogenetic reconstruction of the plant groups, and studies on ornithophily in these taxa, it is possible to elucidate the emergence and evolution of the bird-flower coevolution in the Old World.

结合植物类群的系统发育研究以及对其鸟类传粉现象的认识，可以系统地了解鸟类传粉在旧世界温带地区的起源与演化，以及鸟-花协同进化的过程。

Results indicate that the number of bacteria grown in media LB, CSEA and WSA was 14.84×10^7, 10.27×10^7 and 6.91×10^7 CFU per gram dry soil, respectively, after 192 h of incubation. The diversity index of soil bacteria was the highest in WSA, while the lowest in LB. Certain similarity was discovered in bacteria community between the three media, i. e. the Jaccard index was 57.69% between LB and CSEA, 53.13% between LB and WSA and 66.67% between CSEA and WSA. Phylogenetic analysis suggests that the dominant bacterial groups in the soil belong to β-Proteobacteria,γ-Proteobacteria and Actinobacteria. The sequence of 16S rDNA of some OTUs was found to have high homology with Burkholderiaceae bacterium, Rhodococcus and Mycobacterium, so it is presumed that the cells of these bacteria can secrete Resuscitation-Promoting Factors, which may effectively improve culturability of soil microorganisms.

结果表明，LB、CSEA、WSA培养基192h后每g干土获得的细菌数量分别为14.84×10^7、10.27×10^7和6.91×10^7CFU，但微生物多样性指数以WSA为最高，LB多样性指数最低；三种培养基培养的细菌菌群有一定的相似性，LB和CSEA培养基间的Jaccard指数为57.69%，LB和WSA培养基之间为53.13%，而CSEA和WSA培养基的相似性指数达66.67%；16SrDNA测序结果表明，所获得的土壤细菌优势种群在分类方面主要属于γ-和β-变形杆菌以及放线菌亚门，其中某些OTUs中的16SrDNA序列与Burkholderiaceae bacterium、Rhodococcus和Mycobacterium属具有较高的同源性，推测其细胞能够分泌复苏促进因子，有效地提高土壤细菌的可培养性。

This paper deals with the classification,distribution and the phylogenetic relationships among the species of the genus Phrynocephalus in Tibet Plateau with the paleogeographic changes in cenozoic.

长期以来，对西藏地区沙蜥(Phrynocephalus：Agamidae)的研究主要是种的分类和地理分布及生态习性方面，如Blyth(1863)、Boulenger(1885)、Zugmayer(1909)、Bedriaga(1907-1909)、赵肯堂(1979，1992)、黄永昭(1979)、原洪(1986)、胡淑琴等(1987)、赵尔宓等(1993)、王跃招等(1993)等。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。