中国平背叶蜂亚科两新种(膜翅目,叶蜂科)

记述中国叶蜂科平背叶蜂亚科两新种:黄氏元叶蜂Taxonus huangleii Wei,Liao et Huang,sp.nov.和黄胫秋叶蜂Apethymus xanthotibialis Wei,sp.nov.,前者与Taxonus flavicornis Wei很相似,但该种前、中、后胸侧板以及后胸背板均有明显黑斑,中胸后背片黑色,中胸前侧片中部刻点稀疏,具明显光滑间隙,锯腹片9～10锯刃窄于刃间膜,节缝刺毛带中部宽约为锯节的1/3;后者与Apethymus kolthoffi(Forsius)比较近似,但各足胫节和跗节全部黄褐色,小盾片黑色,后头延长,单眼后区长几乎等于宽,触角鞭节明显侧扁,锯鞘很短,仅等长于后足基跗节,后翅臀室柄长于cu-a脉1/2,中部锯刃短高,仅具4～6个外侧亚基齿.新种模式标本保存于中南林业科技大学昆虫模式标本室.     

中国叶蜂属(膜翅目,叶蜂科)三新种

记述采自中国河南、陕西、浙江的叶蜂科叶蜂亚科叶蜂属3新种:吕氏横斑叶蜂Tenthredo lunani Wei et Niu,sp.nov.,三斑槌腹叶蜂Tenthredo dolichomisca Wei et Niu,sp.nov.,黑腰白端叶蜂Tenthredo pararubiapicilina Wei et Niu,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。     

中国钩瓣叶蜂属三新种(膜翅目,叶蜂科)

记述采自中国甘肃的钩瓣叶蜂属3新种,肿跗钩瓣叶蜂Macrophya incrassitarsalia Wei et Wu,sp.nov.,黑体钩瓣叶蜂Macrophya melanosomata Wei et Xin,sp.nov.和白转钩瓣叶蜂Macrophya leucotrochanterata Wei et Li,sp.nov..新种模式标本保存于中南林业科技大学昆虫模式标本室.     

金氏叶蜂属一新种(膜翅目,叶蜂科)

记述采自陕西和河北的1个叶蜂新种:黄角金叶蜂finia flavicornis Wei et Li,sp.nov,.编制了金氏叶蜂属已知种分种检索表.新种模式标本保存于中南林业科技大学昆虫模式标本室(CSCS).     

中国真片叶蜂属(膜翅目,叶蜂科)四新种

记述采自中国河南的真片叶蜂属4新种:短室真片叶蜂Eutomostethus brevicellus Wei et Niu,sp.nov.,狭突真片叶蜂Eutomostethus lineituberculus Wei et Niu,sp.nov.,白腹真片叶蜂Eutomostethus albiventralinus Wei et Niu,sp.nov.和假亮真片叶蜂Eutomostethus pseudometallicus Wei et Niu,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.     

中国方颜叶蜂属(膜翅目,叶蜂科)种团二新种

记述方颜叶蜂属Pachyprotasis pallidistigma种团2新种:周氏方颜叶蜂Pachyprotasis zhoui Wei et Zhong,sp. nov.和稻城方颜叶蜂Pachyprotasis daochengensis Wei et Zhong, sp. nov..新种模式标本保存在中南林业科技大学昆虫模式标本室.     

中国方颜叶蜂属(膜翅目,叶蜂科)二新种

记述采自云南及四川省的方颜叶蜂属Pachyprotasis两新种:郑氏方颜叶蜂Pachyprotasis zhengi Wei et Zhong,sp.nov.和程氏方颜叶蜂Pachyprotasis chenghanhuai Wei et Zhong,sp.nov..新种模式标本保存在中南林业科技大学昆虫模式标本室.     

中国叶蜂属(膜翅目,叶蜂科)两新种

记述中国叶蜂科叶蜂属2新种:平突翠绿叶蜂Tenthredo flatotrunca Wei et Hu,sp.nov.和角斑长突叶蜂Tenthredo triangulimacula Wei et Hu,sp.nov..前者属于叶蜂属翠绿叶蜂种团Tenthredo trunca group,后者属于叶蜂属长突叶蜂种团Tenthredo triangulifera group.简要讨论了翠绿叶蜂种团和长突叶蜂种团的特征与种类分布状况.提供了长突叶蜂种团分种检索表.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.     

神农架钩瓣叶蜂属二新种(膜翅目,叶蜂科)(英文)

记述采自湖北神农架的钩瓣叶蜂属2新种:江氏钩瓣叶蜂Macrophya jiangi Wei et Zhao,sp.nov.和神农钩瓣叶蜂Macrophya shennongjiana Wei et Zhao,sp.nov.。2个新种均属于Macrophya sanguinolenta种团。编制了新种及其2个近缘种的分种检索表。模式标本保存于中南林业科技大学昆虫模式标本室。     

金氏叶蜂属研究及一新种记述(膜翅目,叶蜂科,平背叶蜂亚科)

修订了膜翅目叶蜂科平背叶蜂亚科的金氏叶蜂属Jinia Wei,描述了分布于中国中部的1新种:黑斑金氏叶蜂Jinia nigromacula sp.nov,基于正模标本重新描述了黄褐金氏叶蜂Jinia fulvana Wei et Nie,1999.金氏叶蜂属是中国特有属,目前已发现3种.编制了金氏叶蜂属已知种分种检索表.新种模式标本分别保存于中南林学院昆虫标本室和中国科学院动物研究所.     

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.