河南省锤举腹蜂属研究(膜翅目,举腹蜂科)

报道采自河南省的锤举腹蜂属3新种：白跗锤举腹蜂Pristaulacus albitarsatus sp.nov．，黑足锤举腹蜂Pristaulacus memnonius sp nov.，脊锤举腹蜂Pristaulacus porcatus sp．nov．和1已知种：喀锤举腹蜂Pristaulacus karinulus Smith，2001。标本保存在国家林业局森林病虫害防治总站标本馆。     

窄腹细蜂属二新种(膜翅目:窄腹细蜂科)

报遭窄腹细蜂属Ropronia Provancher 2 新种：梵净山窄腹细蜂R．fanjingshanensis He et Chen．sp．nov．和双斑窄腹细蜂R．bimaculata He et Chen,sp．nov。均采自贵州省。描述了形态特征并与近似种做了比较。模式标本保存于杭州浙江大学植物保护系寄生蜂标本室。     

中国华甲腹茧蜂属一新种记述(膜翅目:茧蜂科:甲腹茧蜂亚科:愈腹茧蜂族)

本记述采自中国福建省武夷山的茧蜂科Braconidae甲腹茧蜂亚科Cheloninae华甲腹茧蜂属Siniphanerotomella He,Chen et van Achterberg1新种,异唇华甲腹茧蜂Sini phanerotomella disparclypeolus Ji etChen ,sp.nov.。模式标本保存于福建农林大学植保学院益虫研究室。     

红腹举腹蜂Aulacus erythrogaster的新名

Because Aulacus erythrogaster He et Chen 2002 is preoccupied by Aulacus erythrogaster Kieffer 1904, authors propose a new name Aulacus sinensis He and Chen as replacement name for A. erythrogaster He et Chen.     

中国中沟细蜂属种类记述(膜翅目:细蜂科)

记述中国中沟细蜂属 Parthenocodrus Pschorn-Walcher 5种,其中包括4新种:梵净山中沟细蜂P.fanjingshanensis He et Xu,sp.nov.、褐足中沟细蜂P.fu scipes He et xu,sp.nov.、鼓鞭中沟细蜂P.tumidiflagellum He et ...     

中国短细蜂属种类记述(膜翅目:细蜂科)

记述中国短细蜂属Brachyserphus Hellén 5种,其中包括4新种:周氏短细蜂Brachyserphus choui He et Xu,sp.nov.、天目山短细蜂Brachyserphus tianmushanensis He et Xu,sp.nov.、贵州短细蜂Brachyserphus guizho...     

小腹茧蜂亚科一新种记述及一新组合(膜翅目:茧蜂科)

记述小腹茧蜂亚科Microgastrinae湿小腹茧蜂属Hygroplitis Thomson 1新种：黔湿小腹茧蜂Hygroplitis nigrita Luo et You,sp．nov．,并提山沟腹茧蜂属Diolcogaster Ashmead 1新组合：赵氏沟腹茧蜂Diolcogaster chaoi(Luo et You)。模式标本保存住贵州师范大学地理与生物科学学院。     

云南小腹茧蜂属一新种记述（膜翅目：茧蜂科，小腹茧蜂亚科）

本记述采自云南昆明的小腹茧蜂属Microgaster Latreille一新种,云南小腹茧蜂Microgaster yunnanensis Xu et He,sp nov．     

黑龙江侧沟茧蜂属-新种记述（膜翅目：茧蜂科：小腹茧蜂亚科）

本记述采自黑龙江的侧沟茧蜂属Microplitis Foerster一新种,杨二尾舟蛾侧沟茧蜂Microplitis menciana Xu et He,sp nov.。     

中国深沟茧蜂族分类研究及二新种记述（膜翅目：茧蜂科：茧蜂亚科）

记述中国茧蜂亚科深沟茧蜂族3属(泛深沟茧蜂属Aniphiaulax Kokoujev,1899,驼腹茧蜂属Hybogaster Szepligeti,1906和深沟茧蜂属Iphiaulax Foerster,1862)11种,其中有2新种:斑翅驼腹茧蜂Hybogaster zebripterae Wang et Chen,sp. nov.和乌海深沟茧蜂Iphiaulax wuhainensis Wang et Chen, sp. nov. 及2中国新记录种:短尾深沟茧蜂Iphiaulax impeditor(Kokoujev,1898)和长尾深沟茧蜂Iphiaulax mactator(Klug,1817)。长尾深沟茧蜂在吉林育自灰长角天牛 Acanthocinus aedilis Linn.幼虫,赤腹深沟茧蜂Iphiaulax impostor(Scopoli,1763)在辽宁和山西育自青杨天牛(山杨天牛)Saperda populnca Linn.幼虫。文中附有深沟茧蜂族3属的分属检索表、驼腹茧蜂属和深沟茧蜂属分种检索表和新种的形态特征图。所有标本均保存在浙江大学昆虫科学研究所(ZJUH)。     

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.