植绥螨科3新种和似巨钝绥螨特征补充(蜱螨亚纲:中气门目)

记述植绥螨科Phytoseiidae3新种:永安钝绥螨Amblyseius yonganensis sp.nov.,仿盾钝绥螨Ambly-seius imitopeltatus sp.nov.和尤溪盲走螨Typhlodromus youxiensis sp.nov.,并补充似巨钝绥螨Amblyseius grandisimilis Ma,2004特征。     

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。     

钝绥螨属2新种和东方盲走螨雄螨及若螨描述(蜱螨亚纲:革螨股:植绥螨科)

记述钝绥螨属 2新种 :拟大钝绥螨 Amblyseius submagnus sp.nov.和似巨钝绥螨 Amblyseiusgrandisimilissp.nov.,同时描述东方盲走螨 Typhlodromusorientalis Wu,1 981雄螨和若螨。模式标本存于全国鼠疫布氏菌病防治基地 ,吉林省白城市。     

中国北方植绥螨二新种和二新纪录（蜱螨亚纲：植绥螨科）

本文记述采自中国北方滨海地区植绥螨二新种及二新纪录种。单毛盲走螨Typhlodromus,monosetus sp.nov.采自吉林长自山;凹胸盲走螨T.concavus sp.nov.采自山东省泰山。山葡萄钝绥螨Amblyseius vineaticus Wainstein及柞钝绥螨A.quaesitus Wainsteia et Begliarov均采自长白山,为中国新纪录。首次描述千山盲走螨T.qianshanensis Wu雄螨。     

中国东北地区植绥螨新种和新纪录Ⅲ：蜱螨亚纲：植绥螨科

本文记述东北地区的植绥螨共7种,其中有4个新种:三毛盲走螨Typhlodromus trisetus sp.nov.兴城盲走螨Typhlodromus xingchengensis sp.nov.榛植绥螨Phytoseius corylus sp.nov.和杂草钝绥螨Amblyseius gramineous sp.nov.。2种我国新纪录:树木盲走螨Typhlodromus corticis Herbert,三孔盲走螨Typhlodromus ternatus Ehara,后者雄性为首次描述。一种新异名即西宁盲走螨Typhlodromus xiningensis Chen et Chu为苏氏盲走螨Typklodromus soleiger (Ribaga)的异名。     

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.     

山楂叶螨对胡瓜钝绥螨的吸引作用研究

采用两侧吸引作用试验测定天敌胡瓜钝绥螨Amblyseius cucumeris Oudemans在田间对山楂叶螨的搜索和控制能力。结果表明：山楂叶螨不同螨态对胡瓜钝绥螨均有显著的吸引作用,排泄物对胡瓜钝绥螨没有明显的吸引作用。山楂叶螨对胡瓜钝绥螨的这种吸引作用说明胡瓜钝绥螨在田间具有自动搜索山楂叶螨的能力,可用于山楂叶螨的生物防治。     

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。     

寄螨科四新种记述(蜱螨亚纲,革螨股)

记述寄螨科4新种:短胸常革螨Vulgarogamasus brachysternalis sp.nov.,长囊常革螨Vulgarogamasus longascidiformis sp.nov.,河南新革螨Neogamasus henanensissp.nov.和树状钝革螨Amablygamasus dendriticus sp.nov..     

土耳其斯坦叶螨对胡瓜钝绥螨的吸引反应

土耳其斯坦叶螨（Tetranychus turkestani Ugarov ＆ Nikolski）对胡瓜钝绥螨（Amblyseius cucumeris Oudemans）的吸引测试表明,胡瓜钝绥螨对不同螨态的土耳其斯坦叶螨的刺激均能产生显著的吸引反应。胡瓜钝绥螨能捕食土耳其斯坦叶螨的卵,但对土耳其斯坦叶螨的“卵＋丝网＋粪便＋取食斑”没有明显的反应,土耳其斯坦叶螨的若螨I和幼螨是胡瓜钝绥螨最喜欢的猎物。土耳其斯坦叶螨主要通过活动螨对胡瓜钝绥螨产生吸引反应,这种吸引反应能明显提高胡瓜钝绥螨在田间搜索土耳其斯坦叶螨的能力。     

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.