中国沙泥蜂属一新种记述(膜翅目:泥蜂科)

记述泥蜂科Sphecidae沙泥蜂属Ammophila Kirby1新种:褐角沙泥蜂Ammophila antenniferruginea,sp.nov.。模式标本保存在中国科学院动物研究所。     

中国十种寄生于林木害虫的脊茧蜂(膜翅目:茧蜂科:内茧蜂亚科)

本文报道了10种寄生于中国林木害虫的脊茧蜂Aleiodes Wesmael,其中有3个新种:角脉脊茧蜂A. angulinervis sp. nov.、油桐尺蠖脊茧蜂A. buzurae sp. nov.、乌桕毛虫脊茧蜂A. cuproetis sp. nov.;4个中国新记录:舟蛾脊茧蜂A. drymoniae(Watanabe)、夜蛾脊茧蜂A.nocturnus(Telenga)、白脊茧蜂A.pallidotor(Thunberg)、硕脊茧蜂A.praetor(Reinhard);此外3个已知种为:松毛虫脊茧蜂A.dendrolimi(Matsumura)、桑尺蠖脊茧蜂A.iaponicus(Ashmead)、毒蛾脊茧蜂A.lymantriae(Watanabe)。对新种作了全面的描述,并附有特征图、寄主及分布等情况。文中还附有一鉴别此10种的检索表。     

中国沙泥蜂亚科一新纪录属及一新种记述(膜翅目,泥蜂科)

记述了泥蜂科沙泥蜂亚科Ammophilinae中国1新纪录属:异足沙泥蜂属Parapsammophila Taschenberg,1869,及该属的1个新种,无脊异足沙泥蜂Parapsammophila vecarinata sp.nov..新种与P.foleyi(de Beaumont)相似,但前者雌性的唇基前缘中部具凹缺,唇基中部无中纵脊;中胸腹板前面正常;前足跗节不对称性较后者强;中足胫节具1距;上颚基半部、唇基前部、触角柄节、鞭节Ⅰ节基部内侧、3对足除基节基部外、前胸背板侧叶、翅基片、腹部除背板Ⅰ基部外为红黄色;雄性触角鞭节Ⅶ～X节内侧为暗红色;外生殖器阳茎端突外缘无齿等特征与后者明显有别.模式标本均采自我国新疆.模式标本保存在云南农业大学昆虫标本室.     

陕西省沙泥蜂属四新种(膜翅目:泥蜂科)

沙泥蜂属(Ammophila Kirby) 为泥蜂亚科(Sphecinae)沙泥蜂族(Ammophili-ni)中最大的一个属,其前侧沟不通过中胸侧板穴、腹柄端部不伸到背板Ⅱ基部和背板Ⅰ的气孔位于相当腹柄顶端或以远的位置可与族中其它属区别。此属分布于世界各区,古北区和东洋区已有80种(Bohart and Menke,1976)。中国记载过10种,本文基于北京农业大学搬迁陕北时所采集的标本,又增加陕西的四新种,模式标本均保存在我校的昆虫     

吉林省潜水蜂二新种(膜翅目:潜水蜂科)

本文记载长白山潜水蜂Agriotypus changbaishanus Chao和吉林潜水蜂A. jilinensis Chao二新种,标本系张彦成在吉林省长白山自然保护区采集,并观察生活习性和实物照相;由赵修复鉴定描述,并绘制特征图。 潜水蜂前此已发现的共4种,即:具刺潜水蜂Agriotypus armatus Curtis, 1832(欧洲),日本潜水蜂A. gracilis Waterston, 1930(日本),喜马潜水蜂A. himalensis Mason,1971(印度)和缅甸潜水蜂A. kambaitensis Gupta et Chandra, 1975(缅甸)。Townes     

中国新纪录属——瘤螳蛉属一新组合和澳蜂螳蛉属中国三新纪录种(脉翅目,螳蛉科)

首次报道了瘤螳蛉属Tuberonotha在中国的分布,对原"华安螳蛉Entanoneur asinica Yang,1999"进行了修订和重新描述,建立新组合华瘤螳蛉Tuberonoth asini cacomb.nov.;报道了中国螳蛉另一属——澳蜂螳蛉属Austroclimaciella的中国3新纪录种:吕宋澳蜂螳蛉A.luzonica(Weele)、小褐澳蜂螳蛉A.subfusca(Nakahara)和韦氏澳蜂螳蛉A.weelei Handschin,并对拉氏澳蜂螳蛉A.lacolombierei(Navás)进行了重新描述。编写了中国澳蜂螳蛉属检索表,首次对该两属的外生殖器进行了解剖描述和绘图。研究标本保存在中国农业大学昆虫标本馆(CAU)和中国科学院动物研究所动物标本馆(IOZ)。     

中国澳彩带蜂亚属研究(膜翅目,蜜蜂总科,隧蜂科)

报道中国澳彩带蜂亚属4种,并给出了物种检索表.这些物种包括:塔克彩带蜂Nomia(Austronomia)takaoensis Friese、克氏彩带蜂N.(A.)krombeini Hirashima、小齿突彩带蜂N.(A.)notiomorpha Hirashima与大胫板彩带蜂N.(A.)fruhstorferi Pérez,其中小齿突彩带蜂为中国新纪录种.研究标本保存于中国科学院动物研究所.     

五种壁蜂的鉴别特征

壁蜂属 Osmia绝大多数属独栖蜂 ,并具有很强的访花习性。我国自 1 987年从日本引进角额壁蜂 Osmia cornifrons(Rad.)后 ,开始在苹果、梨、李、桃、杏及樱桃等多种北方落叶果树花期 ,利用壁蜂授粉 ,提高坐果率。我国北方春季果树花期常见的壁蜂种类有角额壁蜂 Osmia图　 5种壁蜂雌虫鉴别特征A～ D,唇基两侧的角状突 (侧面观 ) :A.角额壁蜂　 B.叉壁蜂　 C.叉壁蜂 (顶面观 )　 D.壮壁蜂 ;E～ I,唇基端缘特征 (前面观 ) :E.角额壁蜂　F.叉壁蜂　 G.壮壁蜂　 H.凹唇壁蜂　I.紫壁蜂cornifrons(Rad.)、凹唇壁蜂 O.excavataAlfken、紫壁蜂 …     

中国大陆摩蜂麻蝇属的修订研究(双翅目,麻蝇科,蜂麻蝇亚科)(英文)

对中国大陆的摩蜂麻蝇属Amobia Robineau-Desvoidy已知种类进行了修订。我国大陆记载的Amobia distorta(Allen)应为A.quatei Kurahashi。提供了大陆已知摩蜂麻蝇属A.signata、A.quatei与台湾分布的A.oculata区分的检索表。     

蝽茧蜂属Aridelus二新种描述附一国外种的同物异名(膜翅目:茧蜂科,优茧蜂亚科)

蝽茧蜂属Aridelus Marshall前此在我国已知者,仅橙足蝽茧蜂A.rutilipes Papp(1965)1种,产于台湾省。本文增加2新种。 就寄主范围而言,本属仅知A.rufus (Cameron)一种,在非洲寄生为害咖啡的一种椿象Antestla lineaticollis stal的成虫和若虫。非洲的另一种A.cameroni(szépligeti)可能也会寄生这种椿象。因而本属中名拟作椿茧蜂。 中国蝽茧蜂属检索表——雌性     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

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.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

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.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

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.     

肝癌中HBV和HCV基因和抗原的分布及意义

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     

Selection with two alleles and complete dominance

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.