中国突瓣叶蜂属一新种(膜翅目,叶蜂科)及于氏突瓣叶蜂雌性记述

记述采自中国河南的叶蜂科突瓣叶蜂亚科1新种:贺氏突瓣叶蜂Nematus hei sp.nov.。新种与Nematus yuae Wei很近似,但新种后足基节基部5/6和股节基部1/4白色,前翅2Rs室大型,长2倍于宽,明显长于1Rs的1/2长,背面观尾须端部显著伸出锯鞘端部,锯鞘缨毛显著弯曲,锯腹片的锯基腹索踵短而宽,背缘鼓凸,锯腹片第1节缝骨化程度显著强于其余各节,中部节缝刺毛带最宽处显著窄于锯节1/3宽。首次记述了于氏突瓣叶蜂Nematus yuae Wei,2002的雌性。新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室。     

中国大跗突瓣叶蜂种团一新种（膜翅目：叶蜂科）

合室舞虻属Tachydromia Meigen是舞虻科中较大的属,已知112种分布世界各地.我国以前已知10种.本文首次发现合室舞虻属在陕西有分布,记述2新种:基黄合室舞虻Tachydromia basiflava sp.nov.和粗鬃合室舞虻Tachydromia crassisetosa sp.nov.,均属于白毛合室舞虻种团Tachydromia arrogans species group,并编制了中国合室舞虻属分种检索表.     

中国突瓣叶蜂属红环突瓣叶蜂种团Nematus lucidus group一新种(膜翅目:叶蜂科)（英文）

记述采自中国突瓣叶蜂属Nematus Panzer,1801红环突瓣叶蜂种团Nematus lucidus group 1新种:白氏突瓣叶蜂Nematus baii Liu,LiWei sp.nov.;记述了N.lucidus group的主要鉴别特征,并编制了N.lucidus group已知种类检索表。     

中国大跗突瓣叶蜂种团一新种(膜翅目:叶蜂科)

记述采自中国广西、贵州、湖南和浙江境内的突瓣叶蜂属大跗突瓣叶蜂种团1新种:钟氏突瓣叶蜂Nematus zhongi Liu,Li&Wei sp.nov.,编制了大跗突瓣叶蜂种团中国已知种类检索表.     

中国钩瓣叶蜂属黄斑钩瓣叶蜂种团一新种（膜翅目：叶蜂科）

记述中国西藏钩瓣叶蜂属黄斑钩瓣叶蜂种团Macrophya flavomaculata group 1新种:横斑钩瓣叶蜂M.transmaculata Li,LiuWei sp.nov.。     

内蒙古贺兰山突瓣叶蜂亚科两新种(膜翅目,叶蜂科)

记述采自内蒙古贺兰山的中国突瓣叶蜂亚科2新种:刺瓣槌缘叶蜂Pristiphora spinivalviceps sp.nov.和褐痣拟栉叶蜂Priophorus fulvostigmatus sp.nov.。新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室。     

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.