云南行军蚁亚科和猛蚁亚科二新属记述(膜翅目:蚁科)

在云南西双片纳自然保护区热带雨林内采集并描述行宫蚁亚科和猛蚁亚科２新属。云行军蚁属Ｙｕｎｏｄｏｒｙｌｕｓ ｇｅｎ．ｎｏｖ．新属隶属于行军蚁亚科,为单模属,地栖性,其属模六刺云行军蚁Ｙ．ｓｅｘｓｐｉｎｕｓ ｓｐ．ｎｏｖ．新种的２个巢群发现于季节性雨林和落叶季雨林的土壤样中。版纳猛蚁属Ｂａｎｎａｐｏｎｅ ｇｅｎ．ｎｏｖ．新属隶属于猛蚁亚科钝猛蚁族Ａｍｂｌｙｏｐｏｎｉｎｉ,为单模属,其属模木兰版纳猛蚁Ｂ     

中国扁胸切叶蚁属一新种及红蚁属一新纪录种(膜翅目,蚁科)

报道了采自湖北西部地区的扁胸切叶蚁属1新种和红蚁属中国1新纪录种,即亮颚扁胸切叶蚁Vollenhovialucimandibula sp.nov.和乌尔班红蚁Myrmica urbanii Radchenko et Elmes.新种与埃氏扁胸切叶蚁V.emeryi Wheeler相似,但新种身体黑褐色,第2结节背面具密集粗糙刻点,上颚光亮无刻点.模式标本保存于湖北民族学院昆虫标本室.     

湖北蚁科二新种记述(膜翅目,蚁科)

记述了采自湖北省的蚁科昆虫2新种,即九宫山凹头臭蚁Phildris jiugongshanensis sp.nov.和七齿前结蚁Prenolepis septemdenta sp.nov．。文中提供了凹头臭蚁属Philidris Shattuck和前结蚁属Prenlepis Mayr在我国所有种的检索表。新种模式标本保存于湖北民族学院昆虫标本室。     

中国湖南细胸蚁属一新种(膜翅目,蚁科)

描述中国湖南省细胸蚁属1新种,衡山细胸蚁Lep-tothorax hengshanensis sp. nov..新种与布朗氏细胸蚁L.braunsi(Forel)相似,但并胸腹节侧面观后侧呈角形;背面观第1结节长为宽的1.5倍;并胸腹节缝不凹陷;后腹部光亮,无刻点.因为本属目前仅有2个已知种并腹胸缺刺,因此新种易于与其他已知种区别.     

中国西南地区角腹蚁属和卡蚁属新种记述（膜翅目：蚁科：切叶蚁亚科）

中国西南地区角腹蚁属和卡蚁属新种记述（膜翅目：蚁科：切叶蚁亚科）徐正会,郑哲民（陕西师范大学动物研究所陕西省西安市７１００６２）本文报道了在中国西南地区发现的２个蚂蚁新种。新种女蜗角腹蚁Ｒｅｃｕｒｖｉｄｒｉｓｎｕｗａ,ｓｐ．ｎｏｖ．与弯刺角腹蚁Ｒ．ｒ...     

中国红蚁属分类研究(膜翅目:蚁科)

记述中国红蚁属Myrmica Latreille昆虫11种,其中1种为中国新纪录种,即盖列尼红蚁M.gallieni Bondroit;描述1新种,太白红蚁M.taibaiensis sp.nov。新种与M.inezae相近,其不同处为：1）新种上颚咀嚼缘具8齿,端部2齿尖长,从第3齿开始变为细齿,后者上颚咀嚼缘具9齿,端部4齿较粗大,2）新种并胸腹节刺指向斜后上方,后者并胸腹节刺较直立;3）新种体色成双色,胸部颜色明显淡于头部及腹部,后者体色一致。文中编制了11个种的工蚁分种检索表。     

中国云南细蚁亚科二新种(膜翅目:蚁科)

在云南省昆明市西山森林公园发现细蚁亚科2新种,即叉颚原细蚁Protanilla furcoandibula sp.nov和昆虫细蚁Leptanilla kunmingensis sp.nov。分别编制了中国原细蚁属Protanilla3个已知种和细蚁属Lep-tanilla4个已知种工蚁分种检索表,并附所有物种的插图。     

中国棱胸蚁属系统分类研究（膜翅目：蚁科）

研究中国棱胸蚁属Pristomyrmex Mayr蚂蚁4种;短刺棱胸蚁,P.brevispinosus Emery,台湾棱胸蚁P.formosae Forel,双针棱胸蚁P.pungens Mayr,弯钩棱胸蚁P.hamatus sp.nov。编制了工蚁分种检索表。描述了采于云南省南部勐腊热带雨林内一新种弯钩棱胸蚁P.hamatus sp.nov该新种与双针棱胸蚁P.pungens Mayr接近。但上鄂内缘具1个明显的齿,背面观并胸腹节刺内弯呈钩状,侧面观胸部背面圆形隆起,腹柄结宽且背面较直。模式标本标本保存在西南林学院资源学院。     

中国西南地区铺道蚁属的新种和新记录（膜翅目：蚁科）

中国西南地区铺道蚁属的新种和新记录（膜翅目：蚁科）徐正会,郑哲民（陕西师范大学动物研究所,陕西省西安市７１００６２）关键词蚁科,铺道蚁属,新种,新记录,中国本文报道了中国西南地区发现的铺道蚁属ＴｅｔｒａｍｏｒｉｕｍＭａｙｒ３新种和１新记录种：心头铺道...     

广西巨首蚁属昆虫研究：膜翅目：蚁科

本文记述广西壮族自治区的巨首蚁属Ｐｈｅｉｄｏｌｏｇｅｔｏｎ昆虫６种,其中３新种,即：黑沟巨道蚁,宽结巨首蚁和粗纹巨首蚁。新种正模标本保存于陕西师范大学动物研究所,副模标本保存于广西师范大学生物系。文中提供广西该属已知种的大头工蚁分种检索表。     

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.