陕西根螨属一新种记述（蜱螨亚纲：粉螨科）

本文描述根螨属１新种：大蒜根螨Ｒｈｉｚｏｇｌｙｐｈｕｓ ａｌｌｉｉ ｓｐ．ｎｏｖ．,模式标本保存在西南农业大学植物保护系。     

根螨——一类重要地下害螨

<正> 根螨Rhizoglyphus spp,在土壤中为害植物的地下部分,是世界性的害螨。随着我国蔬菜和花卉(特别是球根、球茎类)种植面积的扩大,根螨的为害值得重视,现根据有关文献编写此文,以供参考。     

常革螨属一新种和下盾螨属一新种(蜱螨亚纲:革螨股:寄螨科,厉螨科)

记述常革螨属1新种：湖北常革螨Vulgarogamasus huberensis Ma et Liu,sp.nov.和下盾螨属1新种：类刺下盾螨Hypoaspis spinaperaffinis Ma et Cui,sp.nov.。     

中气门螨四新种记述(蜱螨亚纲,表刻螨科,胭螨科,寄螨科)

记述表刻螨科表刻螨属2新种：贺氏表刻螨Epicrius hejianguoi sp.nov．和黑龙江表刻螨Epicarius hei-longjiangensis sp．nov．;胭螨科囊螨属一新种：拟巨囊螨Asca submajor sp.nov．;寄螨科新革螨属一新种：囊形新革螨Neogamasus ascidiformis sp．nov.。模式标本存于全国鼠疫布氏菌病防治基地,吉林省白城市。     

背刻螨属—新种及洮儿河美绥螨雄螨、后若螨描述（蜱螨亚纲：革螨股：美绥螨科）

报道背刻螨属在中国的发现。并描述1新种：吉林背刻螨Epicriopsis jilinensis，sp.nov.。同时描述洮儿河美绥螨Ameroseius taoerhensis Ma，1995雄螨及后若螨。模式标本存在于吉林省白城市全国鼠疫布氏菌病防治基地。     

茶园螨类调查及利用胡瓜钝绥螨控制卵形短须螨的初步研究

对广东省农业科学院茶叶研究所英德实验茶场进行调查,共有螨类10科,12属,17种.其中捕食性螨类6科,13种,捕食螨优势种为江原钝绥螨Amblyseius eharai.植食性螨类4科,4种,植食性螨类主要为卵形短须螨Brevipalpus obovatus.茶园释放胡瓜钝绥螨Amblyseius cucumeris释放后10～50 d,对卵形短须螨的防治效果达23.30%～81.31%,可有效控制卵形短须螨的为害.并建议在应用中,每株茶树释放一袋胡瓜钝绥螨.     

革板螨属一新种和绒鼠革板螨雄螨及若螨描述(蜱螨亚纲:革螨股:派盾螨科)

记述革板螨属1新种：拟绒革板螨Gamasholaspis imiteothenomydis，sp.nov.，并描述绒鼠革板螨Gamasholaspis eothenomydis雄螨、后若螨和前若螨。     

背刻螨属一新种及洮儿河美绥螨雄螨、后若螨描述(蜱螨亚纲:革螨股:美绥螨科)

报道背刻螨属在中国的发现。并描述1新种:吉林背刻螨Epicriopsisjilinensis,sp.nov.。同时描述洮儿河美绥螨AmeroseiustaoerhensisMa,1995雄螨及后若螨。模式标本存于吉林省白城市全国鼠疫布氏菌病防治基地。     

寄螨属四种前若螨描述（蜱螨亚纲：革螨股）

本文描述寄螨属4种前著螨;邓氏寄螨Parasitus tengkuofani Ma,1995,王氏寄螨parasitus wangdunqingi Ma,1995,温氏寄螨parasitus wentinghuani Ma,1996,二刺寄螨parasitus bis pinatus Ma,1996.     

中国下盾螨亚科昆虫相关的革螨(蜱螨亚纲:中气门目:厉螨科)

下盾螨亚科的革螨多为营自由牛活的捕食者,其中有一部分种类与昆虫密切相关,人们已经开始关注这些螨类在生物防治领域中的应用潜力.本文首次整理出中国与昆虫相关的下盾螨业科的革螨2属31种,其中下盾螨属Hypoaspis 28种,占90.32%;鞘厉螨属Coleolaelaps 3种,占9.68%.在昆虫的体表发现15种,占48.39%;在昆虫的巢穴和洞道中发现16种,占51.61%.     

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.