中国棒柄泥蜂属二新种记述 (膜翅目：泥蜂科)

该文记述了采自我国西南部及甘肃省的泥蜂科方头泥蜂亚科棒柄泥蜂属2新种：角唇棒柄泥蜂Rhopalum(Rhopalum)cornilabiatum,spnov和甘肃棒柄泥蜂Rhopalum(Rhopalum)gansuense,spnov模式标本分别保存在浙江农业大学昆虫标本室和中国科学院动物研究所昆虫标本馆。     

中国脊臀泥峰亚属二新种记述 (膜翅目 :泥蜂科)(英文)

本文记述了采自我国四川和贵州的棒柄泥蜂属脊臀泥蜂亚属 2新种。 1.背齿棒柄泥蜂Rhopalum(Calceorhopalum)odontodorsale。该种与R .(C .)spinicollumTsuneki相似 ,但唇基形状、头顶刻点大而密集、前胸领片前侧角有短小的齿突、雄性前足基跗节明显宽、以及雄性外生殖器形状等特征明显有别。正模♀ ,副模 9♀♀ 14♂♂ ,分别采自四川峨眉山和贵州梵净山。正模标本保存在中国科学院动物研究所昆虫标本馆 ,副模标本分别保存在中国科学院动物研究所昆虫标本馆和浙江农业大学昆虫标本室。 2 锈腹棒柄泥蜂Rhopalum (Calceorhopalum)rubigabdominale,sp .nov .此种以其头顶凹陷、前胸邻片前侧角圆形、前胸侧板后侧角呈角状凸出、胸腹侧片中部呈钝角状凸出、头和胸部刻点大而密集、腹部为红褐或黄褐色以及雄性外生殖器形状等特征 ,与其相似种R .(C .)spinicollumTsuneki明显有别。正模♀ ,副模 3♂♂ ,采自四川峨眉山。模示标本保存在中国科学院动物研究所昆虫标本馆。     

濒危植物柄扁桃的传粉者及其访花行为

对濒危植物柄扁桃(Amygdalus pedunculata)访花昆虫的种类、访花行为、访花频率和日活动规律进行了研究.结果表明:柄扁桃的访花昆虫有5目17科19属21种,其中传粉昆虫为3目11科13属15种,主要的传粉昆虫为黑颚条蜂(Anthophora melanognatha)、密林熊蜂(Bombus patagiatus)、大蜂虻(Bombylius major)、黄腿食蚜蝇(Syrphus ribesii)及红足隧蜂(Halictus rubicundus);主要传粉昆虫的日活动规律差异较大,活动高峰期彼此交错;黑颚条蜂具有体积大、携粉量大、小花停留时间短等特点,为柄扁桃传粉的效率最高,今后应加强其生物学、传粉生态学方面的研究.     

沙泥蜂属一新种记述(膜翅目 :泥蜂科)(英文)

记述了采自我国新疆的沙泥蜂属 1新种 ,伪海沙泥蜂AmmophilapseudoheydeniLietHe ,sp nov ,新种与A heydeniDahlbom相似 ,但唇基前缘形状、盾片和并胸腹节背区的皱纹、腹柄明显长于后足跗节Ⅰ +Ⅱ长度、雄性腹柄仅短于后足胫节长的 1/ 5～ 1/ 6以及体色和雄性外生殖器等特征明显有别。正模♀ ,副模4♀♀ ,8♂♂ ,均采自我国新疆。模式标本分别保存在浙江农业大学昆虫标本室和中国科学院动物研究所昆虫标本馆     

中国三室短柄泥蜂属一新种记述(膜翅目:方头泥蜂科)

记述方头泥蜂科三室短柄泥蜂属1新种——排刺三室短柄泥蜂Psenseriatispinosus,sp.nov.。模式标本保存于浙江大学昆虫标本室。     

中国蠊泥蜂属一新种记述(膜翅目:蠊泥蜂科)

记述采自云南的蠊泥蜂科Ampulicidae蠊泥蜂属Ampulex l新种;扁唇蠊泥蜂Ampulex clypecomplana Chen et Li,sp.nov.,并与近似种Ampulex dissector(Thunberg,1822)作了比较。模式标本保存在云南农业大学昆虫标本室。     

快足小唇泥蜂属一新种和八个中国新记录种（膜翅目：方头泥蜂科）

记述方头泥蜂科快足小唇泥蜂属Tachysphex1新种——齿唇快足小唇泥蜂Tachysphex clypedentalis,sp.nov.,和8中国新记录种,并首次描述了中国新记录种木氏快足小唇泥蜂T.moczari Tsuneki的雌性。模式标本保存于云南农业大学昆虫标本室。     

中国沙蜂亚科一新记录属附记一新种(膜翅目:方头泥蜂科)

记述方头泥蜂科Crabronidae沙蜂亚科Bembicinae中国1新记录属:刺大唇泥蜂属Stizoides Guérin-Méneville,1844,并记述1新种：锈唇刺大唇泥蜂Stizoides labirubiginus,sp.nov.。模式标本保存在中国农业大学昆虫标本室.     

中国隆痣短柄泥蜂属研究及二新记录种记述（膜翅目：方头泥蜂科）

记述我国已知的隆痣短柄泥蜂属Carinostigmus Tsuneki 9种,其中包括2中国新记录种:脉隆痣短柄泥蜂Carinostigmus costatus Krombein, 1984,以及弯柄隆痣短柄泥蜂Carinostigmus maior (Maidl, 1925)。编制了中国隆痣短柄泥蜂属已知种类检索表。     

新疆米短柄泥蜂属二新种记述(膜翅目,蜜蜂总科,方头泥蜂科)(英文)

记述了采自新疆2新种,四齿米短柄泥蜂M.quadridentata Ma,Liet Chen,sp.nov.和散点米短柄泥蜂M.sparsipunctulata Ma,Liet Chen,sp.nov.,对米短柄泥蜂属中国已知种类检索表进行了部分修订。模式标本分别保存在浙江大学寄生蜂标本室和中国科学院动物研究所昆虫标本馆。     

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.