寄生柑桔矢尖蚧的黄蚜小蜂属一新种（膜翅目：蚜小蜂科）

镞盾蚧黄蚜小蜂Aphytis unaspidis新种 本种属短索种组,雌雄触角均为5节,上颚退化,与桔雪蚧黄蚜小蜂Aphytisgordoni十分近似,主要区别在于前翅的形状、翅脉和毛序方面有所不同。 模式产地:四川省重庆市附近。 模式标本分别存放在中国广东省昆虫研究所、美国自然历史博物馆、英国伦敦自然历史博物馆(大英博物馆)和美国德克萨斯大学。     

灯蛾科一新种(鳞翅目)

本文记述灯蛾科一新种,模式标本保存于中国科学院动物研究所。拟火焰污灯蛾Spilarctia pseudoflammeoida,新种 雌蛾翅展48—50毫米;体橙红色;触角锯齿状;触角干背面与腹面黑色,两侧黄白色锯齿黑色;下唇须黑褐色,下方基半部橙红色;前胸足基节橙红色,腿节粉色,前足与中足胫节外侧黑色,内侧粉色,后足胫节全为粉色,跗节均为黑色;腹部腹面黄色,背面橙红色。末端两节膨大,黄色;翅橙红色,稍透明,前翅中带黑点从前缘外科至中脉折角,再向内斜,     

跳小蜂科中国两新记录种

夜蛾跳小蜂Litomastix maculata Ishii ♀:体长0.8毫米左右。通常黑色:中胸盾和小盾片末端有绿色闪光;三角片、小盾片和中胸侧板稍有紫色闪光。触角柄节细长,约为梗节与第一至三索节长之和;梗节长大于宽,长为第一至三索节长之和;索节6节,第一索节长、宽相等。余节渐向端部增宽:棒节紧密,斜截,其长为端部5索节长之和(图1)。翅透明,缘脉附近有1暗色小斑。足胫节基部、前、中足腿节端部、中足跗节和距黄白色;其余为黑褐色或黄褐色,跗节末端褐色,小盾片基半部有1凹槽。腹部短,只及胸部长之半,末端尖。 寄主:斜纹夜蛾Prodenia litura Fabricius,银纹夜蛾Plusia agnata Standinger。     

埃及Aphytis黄蚜小蜂属记述附二新种描述（膜翅目：蚜小蜂科）

对埃及的黄蚜小蜂属进行了综述,并描述了2个新种,即Aphytis azai Abd—Rabou和Aphytis matruhi Abd—Rabou。文章对产自埃及的17个种做了简要描述,还提供了寄主和分布信息,以及埃及黄蚜小蜂属的分种检索表。新种A．azai sp．nov．与A．melinus相似,但区别在于触角节的大小。新种A．matruhi sp．nov．区别于A．lepidosaphes之处在于间节、后胸腹板以及小盾片的相对长度不同。     

中国绒茧蜂属Apanteles Foerster四新种(膜翅目:茧蜂科)

1.樟巢螟绒茧蜂Apanteles locastrae You et Tong,新种(图1) 雌 体黑色。触角、各足基节、后足转节、腿节、胫节端部3/4、跗节、腹部、产卵管鞘黑色;下颚须基节、翅痣褐色,下颚须2—5节浅黄;前足转节、腿节基部1/4,中足转节、腿节基部3/4、胫节端部1/2,前缘脉、痣后脉、翅痣边缘暗褐色;足的其余部分和产卵管黄褐色,后足胫距白色;翅基片黑褐色。     

中国黄蚜小蜂属一新记录种及其蛹的个体发育

记述了中国黄蚜小蜂属一新记录种—桑氏黄蚜小蜂 Aphytis sankarani Rosen et DeBach，描述了桑氏黄蚜小蜂的形态特征，观察了蛹的个体发育，并提供了重要鉴别特征的照片。     

中国伪短痣蚜属（蚜科：伪短痣蚜亚科）研究及新种记述

研究表明中国伪短痣蚜属（Aiceona Takahashi,1921)四个种,其中包括一个新种,长柄伪短痣蚜Aiceona longifestuca,sp.nov.和一个新记录种,日本伪短痣蚜Aiceona japonica Takahashi,1960,中记述了大隅伪短痣蚜Aiceona osugii Takahashi,1924的两种新型－雌性蚜和雄性蚜,长柄伪短痣蚜Aiceona longifestuca,sp.nov,正模：无翅孤雌蚜,No.Y2542-1-1-2,May15,1980,云南省宾川县,寄主植物未知;本新种因无翅孤雌蚜中胸腹岔具有长柄而得名,本新种与A.pallida Ghosh and Raychaudhuri 1972的不同在于：无翅孤雌：中胸腹岔具长槽（后：两臂分离）;喙端节为后足跗节Ⅱ的0．65倍,端部具有2根次生长（后：为0．95－1．0倍,有3对次生毛）;腹部背片Ⅰ-Ⅵ每节具有淡褐色缘斑,背片Ⅶ-Ⅷ全节具有淡褐色横带（后：体背除毛基斑外,无缘斑和横带）;体背毛长,腹部前几节背板毛长为触角节Ⅲ最宽直径的3．75倍,背片Ⅷ毛长为0.21mm（后：体背毛短,腹部前几节背板毛长为触角节Ⅲ最宽直径的2．5倍,背片Ⅷ毛长为0.14mm）。提供了该属中国已知种的两个分种检索表,各种提供了地理分布和寄生植物信息,新种和新型给出形态特征图,所有标本保存在中国科学院院动物研究所动物标本馆。     

贵州省长柄茧蜂属一新种* (膜翊目：茧蜂科：优茧蜂亚科)

贵州长柄茧蜂 Streblocera guizhouensis 新种 雌虫 体黄褐色,头部单眼区、上颚端部、并胸腹节两侧和端缘、腹部背板末端、爪、产卵管鞘深褐色至黑褐色。触角第3—21节、产卵管、前缘脉、翅痣(除前缘)、径脉第一段、第一肘间横脉、后足跗节褐色。     

瑞夜蛾眉一新种记述(鳞翅目:夜蛾科)

本文记述瑞夜蛾 Raddea一新种,采自四川省贡嘎山。新种的正模标本及副模标本1♂保存于中国科学院动物研究所,副模标本2♂♂保存于四川凉山彝族自治州农业科学研究所。 高山瑞夜蛾Raddea alpina 新种 翅展33—35毫米。雄蛾触角双栉形,复眼后缘有长睫毛,头部与胸部褐黄色带红棕色,下胸带有黑褐色,足外侧黑褐色,各跗节端部有白斑;腹部淡褐色;前翅褐黄色,中室除     

寄生白蜡虫雌虫的蚜小蜂

四川是我国养殖白蜡虫最多的地区。寄生白蜡虫雌虫的蚜小蜂,尚未见有报道。本文报道的二种蚜小蜂是寄生在白蜡虫雌虫二龄幼虫和成虫体内,在四川白蜡虫养殖区较为常见的种类,即日本软蚧蚜小蜂及环刺花翅蚜小蜂。白蜡虫雌虫是它们的新宿主。1.日本软蚧蚜小蜂Coccophagus japonicu     

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.