青海甘肃植绥螨五新种（蜱螨亚纲：植绥螨科）

本文报道采自青海、甘肃植绥螨科5新种:青海钝绥螨Amblyseius qinghaiensis sp.nov.,长中毛钝绥螨A.longimedius sp.nov.,大通盲走螨Typhlodromus datongensis sp.nov.,张掖盲走螨T.zhangyensis sp.nov.,和冬盲走螨T.hibernus sp.nov.。全部标本保存在北京市农林科学院。     

中国真扇毛螨属记述(蜱螨亚纲,肉食螨科)

记述了中国真扇毛螨属6个种,其中包括1新种缺毛真扇毛螨Eucheyletia omissa sp.nov.和中国1新纪录种比氏真扇毛螨Eucheyletia bishoppi Baker,1949;并列出了中国真扇毛螨属种检索表.     

毛绥螨属六新种(蜱螨亚纲:裂胸螨科)

毛绥螨属Lasioseius Berlese隶属于裂胸螨科Aceosejidae,国内仅有过混毛绥螨L. confusus,Evans的纪录。本文绘图描述了采自贵州和陕西省啮齿类体上的毛绥螨属6新种:匙毛绥螨L. spatula sp. nov. 贫板毛绥螨L. paucispathus sp. nov.、裂毛绥螨L. schizopilus sp. nov.、黔毛绥螨L. qianensis sp. nov.、点毛绥螨L. punctatus sp. nov. 及多板毛绥螨L. multispathus sp. nov.。文中列举各新种的宿主与采集纪录及与相近种类的鉴别。     

雄尾螨属二新种及马氏雄尾螨重新记述：（蜱螨亚纲：雄尾螨科）

作者在整理采自贵阳、长沙、武汉的马氏雄尾螨Arrenurus(Micruracarus)madarasziDaday标本中,发现了两个近似新种:拟马氏雄尾螨Arrenurus(Micruracarus)madarasziatus sp.nov.和华中雄尾螨Arrenurus(Micruracarus)huazhongensis sp.nov.本文记述了此三近以种,并作了特征鉴别。     

中国奥甲螨科3新种（甲螨亚目：奥甲螨科）

记述采自我国南方的奥甲螨科3新种:鞭毛奧甲螨Oppia flagellifera sp.nov.、雕纹大奥甲螨Lasiobelba sculpta sp.nov.和闽越奥甲螨Vietoppia fujianensis sp.nov,。     

瘤瘿螨属四新种记述（蜱螨亚纲：瘿螨科）

记述瘿螨亚科Eriophyinae瘤瘿螨属4新种：柳州瘤瘿螨Aceria liuzhouensis sp．nov．，采自柳州的木芙蓉；狗肝菜瘤瘿螨Aceria dicliptera sp．nov．，采自武鸣县的狗肝菜；上思瘤瘿螨Aceria shangsiensis sp．nov．和破布叶瘤瘿螨Aceria microcis sp．nov．，分别采自防城市的降真香和破布叶。     

毛绥螨属2新种（蜱螨亚纲：囊螨科）

记述毛绥螨属2新种:前毛绥螨Lasioseiue praevius sp.nov.与中毛绥螨Lasiosius medius sp.nov.     

叶刺瘿螨亚科三新种记述(蜱螨亚纲:瘿螨科)

记述了瘿螨科3新种,芒萁丽瘿螨Calacarus dicranopteris sp.nov.,黄肉楠上三脊瘿螨Calepitrimerus actinodaphnis sp.nov.和蒲葵上三脊瘿螨Calepitrimerus livistonae sp.nov.。均采自广西南宁市。     

毛绥螨属1新种和囊螨属1新种（蜱螨亚纲：裂胸螨科,胭螨科）

描述廖氏毛绥螨,新种Lasioseius jilinsimilis sp.nov.和植囊螨,新种Ascaplantaria sp.nov.     

中国瘿螨科三新种记述(蜱螨亚纲,瘿螨总科)

记述了合位瘿螨属Cosella 1新种:广花耳草合位瘿螨Cosella hedyotis sp.nov.,畸瘿螨属Abacarus2新种:心叶稷畸瘿螨Abacarus panici sp.nov.和芦竹畸瘿螨Abacarus arunis sp.nov..前者采自广西防城港市上思县十万大山国家森林公园,后两种采自广西武鸣县大明山.量度单位为μm.模式标本保存在广西大学农学院昆虫教研室.     

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.