中国新(帻)属(襀翅目,(帻)科)一新种记述

记述采自台湾1新种,赛氏新(赜)Neoperla siveci sp.nov.,并讨论了其与近似种的区别.模式标本保存分别在中国农业大学昆虫博物馆和河南科技学院标本馆.赛氏新(帻),新种Neoperla siveci sp.nov.(图1～4)新种腹部第7背板隆突和第8背板的骨化突特征与邵氏新(赜)Neoperla sauteri Klapalek,1912非常近似.二者的主要区别在于:新种雄虫阳茎囊非常短,约为阳茎管的1/5,阳茎囊腹面刺较少,顶端略直;而邵氏新(赜)雄虫阳茎囊长度略短于阳茎管,阳茎管囊腹面刺较多,端部呈钩状.正模♂,台湾屏东石门村,2010-11-08,杨定采.副模1 ♂,同正模.词源:新种种名源自襀翅学家Ignac Sivce博士的姓氏.     

云南鲤科鱼类一新属新种(鲤形目:鲤科:(鱼丹)亚科)

本文记述采自云南澜沧江水系的鲤科(鱼丹)亚科鱼类一新属新种。新属裸(鱼丹)属Gymnodanio gen.nov.在侧线、臀鳍条数目等特征上近似于低线(?)属Barilius,但以其除侧线鳞外体裸露无鳞,具不完全之腹棱等而与其及(鱼丹)亚科现有各属相区别。新种命名为条纹裸(鱼丹)G.strigatus sp.nov.。     

中国倍叉(责)属三新种(责翅目:叉(责)科)

记述我国倍叉(责)属Amphinemura 3新种: 尖突倍叉(责)Amphinemura acutata sp. nov.、双突倍叉(责)Amphinemura didyma sp. nov.、单突倍叉 (责)Amphinemura singularis sp. nov..     

西藏鳞(虫兆)亚属二新种记述(弹尾目,鳞(虫兆)科)

记述采自西藏地区的弹尾目Collembola鳞(虫兆)科Tomoceridae鳞(虫兆)亚属Tomocerus(Tomocerus)2新种:黑带鳞(虫兆)Tomocerus(Tomocerus)nigrofasciatus sp.nov.(西藏:洛扎生格)和背崩鳞(虫兆)Tomocerus(Tomocerus)baibungensis sp.nov.(西藏:墨脱背崩),给出鉴别特征图以及在西藏地区的种检索表.新种模式标本保存在中国科学院动物研究所.     

越南新棘(螩)族一新纪录属陈(螩)属及一新种记述((螩)目,(螩)科,长角棒(螩)亚科)

记述越南新棘(螩)族1新纪录属,陈(螩)属 Cheniphasma Ho,2012,并记述1新种,粒突陈(螩) Cheniphasma granulatum sp.nov..新种模式标本保存于中国科学院动物研究所.     

威(虫兆)属一新种及阔(虫兆)属在我国的发现(昆虫纲:弹尾目)

描述了采自上海地区的威(虫兆)属一新种Willemia shanghaiensis,并报道中国新纪录种厚角阔(虫兆)Oncopodura crassicornis Shoebotham,1911.新种模式标本存放于中国科学院上海昆虫研究所标本馆.     

中国海南省短角枝(螩)属分类研究((螩)目,(螩)科,克(螩)亚科)

对海南省短角枝(螩)属Ramulus Saussure进行分类整理,共计9种,含l新种,吊罗山短角枝(螩)Ramulus diaoluoshanse Ho,sp.nov.;及1新组合,尖峰岭短角枝(螩)Ramulus jianfenglingense(Chen et He,2008)comb.nov.,新种模式标本存放于广州中山大学生物博物馆.     

中国广西金线(鱼巴)属盲鱼一新种及其生境(鲤科，(鱼巴)亚科)

2002年8月28日在广西田林县平山乡一洞穴地下河中采到1尾鱼类标本,经鉴定为鲤科(鱼巴)亚科金线属(鱼巴)鱼类1新种,定名为田林金线(鱼巴)Sinocyclocheilus tianlinensis sp. nov..鉴别特征:眼退化;吻突出,呈鸭嘴状;头后部急剧隆起,形成一向前不分叉的额骨;新鲜标本体半透明.新种与白斑金线(鱼巴)S.albeoguttatus、鸭嘴金线(鱼巴)S.anatirostris、无眼金线(鱼巴)S. anophthalmus和透明金线(鱼巴)S.hyalinus较相近,而与其他已知种不同.模式标本保存中国科学院动物研究所.     

海南(虫糸)目昆虫一新种及一新纪录((虫糸)目:等尾(虫糸)科)

本文记述采自海南省的缺肢叶(虫糸)属Aposthonia Krauss 1911一个新种:海南丝(虫糸)A. hainanensis sp. nov. 并报导在海南和广东省采到的一个中国新纪录种:桑氏丝蚁Oligotoma saundersii(Westwood)。     

越南华枝(虫骨)属一新种((虫骨)目:异(虫骨)科)

记述了华枝(虫骨)属Sinophasma Gnther一新种越北华枝(虫骨)Sinophasma vietnamense新种.描述了新种的外部形态特征,并与近似种比较区别,附主要特征图.     

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.