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1.
本文记述天牛科沟胫天牛亚科1新属,球胸天牛属Gibbohammusgen.nov.和1新种:缩颈球胸天牛Gibbohammusstricticollissp.nov。  相似文献   

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广西短翼蚱科的新属和新种(直翅目:蚱总科)   总被引:9,自引:0,他引:9  
记述采自广西大瑶山地区短翼蚱科一新属二新种,即拟科蚱属Cotysoides Zheng et Jiang,gen.nov.广西拟科蚱Cotysoides guangxiensis Zheng et Jiang,sp.nov.及瑶山大磨蚱Macromotettix yaoshanensis Zheng et Jiang,sp.nov.。模式标本保存于陕西师范大学动物研究所。  相似文献   

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记述了沟胫天牛亚科沟胫天牛族Agnini3新种,即双斑齿胫天牛Paraleprodera bimaculata sp.nov.,云南棱柄天牛Nanohammus yunnana sp.nov.和白斑肖墨天牛Xenohammus albomaculata sp.nov.。新种模式标本保存于西南农业大学昆虫标本馆。  相似文献   

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本文了中国花天牛亚科3新种-卵斑长颊瘦花牛Gnathostrangalia elliptica,sp.nov。,暗背脊花天牛Stenocorus fuscodoralis,sp.nov.,四斑短腿瘦花天牛Pedostrangalia quadrimaculata,sp.nov。模式标本存西农业大学昆虫标本馆。  相似文献   

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本文报道中国西南地区淡水贝8个新种:Viviparus tricinctus Liu,Zhang et Wang,sp.nov.Parafossarulus globosus Liu,Zhang et Wang,sp.nov.,Lithoglyphopsis hyalinus Liu,Wang et Duan,sp.nov.,Semisulcospira marica Liu,Wang et Zh  相似文献   

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中国花天牛亚科三新种记述(鞘翅目:天牛科)   总被引:1,自引:0,他引:1  
训国花天牛亚科3新种--黑角瘤花天牛Gaurotina nigroantenata,sp.nov.,青海皮花一在牛Rhagium qinghaiensis,sp.nov.,四面山华花天牛Sinostrangalissimianshana,sp.nov.。模式标本存西南农业大学昆虫标本馆。  相似文献   

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脊额叶蝉属三新种:同翅目:叶蝉科:横脊叶蝉亚科   总被引:1,自引:1,他引:0  
本文记述脊额叶蝉属Carinata3新种,即枝茎脊额叶蝉C.branchera Wang et Li。sp.nov,弯突脊额叶蝉C.recurvana Wang et Li,sp.nov.一点脊额叶蝉C.unipuncta Wang etLi,sp,nov.模式标本保存在贵州农学院  相似文献   

8.
湘西中寒武世多节类三叶虫新属种   总被引:1,自引:0,他引:1  
描记湘西江南斜坡带中寒武统花桥组的多节类三叶虫4新属7新种:Changqingialaevissp.nov,Fissanomocarellapaibiensisgen.etsp.Nov.,Huayuaniasubcalvagen.etsp.nov,Luaspisdecorosagen.etsp.Nov.。Paranomocarellafortissp.Nov.,Wangcuniawangcunensisgen.etsp.nov和Zhujiahunanensissp.Nov.。Fissanomocarellagen.nov.属Anomocarellindae科;Wangcuniasen.nov.和Huayuaniasen.nov.分别存疑地归入Papyraspidae科和Anomocarellidae科;Luaspisgen.nov.的科级分类位置未定。所有新属种与华北和东北南部中寒武世动物群关系较密切,是斜坡相混生动物群的重要分子。  相似文献   

9.
中国织蛾二新种记述(鳞翅目:织蛾科)   总被引:1,自引:0,他引:1  
报道中国织蛾二新种:锈平织蛾Pedioxestis ferruginea Wang et Zheng,sp.nov.和龟圆织蛾Eonympha chelonina Wang et Zheng,sp.nov.。锈平织蛾外形与Pedioxestis isomorpha Meyrick相似,但可通过雌性外生殖器来区别:交配囊略呈圆形;导管端片呈不规则梯形,密布微刺;囊突略呈方形,具齿。龟圆织蛾外形与Eo  相似文献   

10.
郭英兰  蒋毅 《菌物系统》2000,19(3):302-305
5种尾孢菌和2种假尾孢菌,其中有3个新种:杜若尾孢Cercospora polliae-japonicaeY.L.Guo&Y.Jiang,sp.nov.,日本锦带花尾孢C.weigelae-japonicaeY.L.Guo&Y.Jiang,sp.nov.和旋覆花假尾孢Pseudocercospora inulaeY.L.Guo&Y.Jiang,sp.nov.,1个新组合:紫菀假尾孢Pseudoce  相似文献   

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It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.  相似文献   

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Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.  相似文献   

18.
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.  相似文献   

19.
肝癌中HBV和HCV基因和抗原的分布及意义   总被引:1,自引:0,他引:1  
采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细  相似文献   

20.
For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.  相似文献   

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