中国四川褶蜢属一新种(直翅目,蜢总科,蜢科)

记述了采自四川的褶蜢属Ptygomastax B.-Bienko,1959 1新种,阿坝褶蜢Ptygomastax abaensis sp.nov.,新种同黑马河褶蜢Ptygomastax heimahoensis Cheng et Hang,1974近似,不同之处为:颜面隆起几何平行;触角15节;后足胫节具15～17刺.正模♂,四川阿坝,海拔3443 m,2011-08-24,叶保华采.雄性 未知.词源:新种种名源自模式标本产地地名.     

大别山地区比蜢属一新种(直翅目:蜢总科)

本文记述在大别山区采到的比蜢属一新种三齿比猛 Pielomastax tridentata sp. nov.,新种近似于细尾比蜢 Pielomastax tenuicerca Hsia et Liu,模式标本保存于山东大学生物系及陕西师范大学生物系。     

湖南省比蜢属一新种记述（直翅目：蜢总科）

本文记述采自湖南省壶瓶山自然保护区比蜢属一新种，即尖尾比蜢PieLomastax axuticerca sp.nov。模式标本保存于陕西师范大学动物研究所。     

江西省比蜢属一新种记述（直翅目：蜢总科）

本文记述采自江西省比蜢属１新种：武夷山比蜢Ｐｉｅｌｏｍａｓｔａｘ ｗｕｙｉｓｈａｎｅｎｓｉｓ，ｓｐ．ｎｏｖ．。模式标本保存于山东大学生物系。     

湖北神农架比蜢属一新种：直翅目：蜢总科

本文记述在湖北省采到的比蜢属一新种,神农架比蜢Ｐｉｅｌｏｍａｓｔａｘｓｈｅｎｎｏｎｇｊｉａｅｎｓｉｓｓｐ．ｎｏｖ．,模式标本保存于山东大学生物系。     

中国比蜢属一新种记述(直翅目:蜢总科)

在调查河南省蝗虫中,发现比蜢属一新种。模式标本保存于中国科学院上海昆虫研究所。 肛翘比蜢Pielomastax lobata新种(图1—6)     

中国蜢总科五新种记述：直翅目：蜢总科

蜢总科Eumastacoidea是一类较罕见而又较原始的小型昆虫,其中有些还被认为是第三纪残遗下来的幸存种类。由于头部颜面的特殊,状似马面被称为马面蜢,又由于触角较短于前足股节也称为短角蜢。大多数种类生活在热带和亚热带的灌木丛或林区内。迄今全世界已知在300种以上。我国对这类昆虫的研究报道甚少,仅知23种,分别隶属于13     

中国比蜢属二新种记述（直翅目：蜢总科）

本文记述采自处牯牛降自然保护区及湖北省神农架比蜢属２新种,即牯牛降比蜢Ｐｉｅｌｏｍａｓｔａｘ ｇｕｌｉｕｊｉａｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ。及钝齿比蜢Ｐｉｅｌｏｍａｓｔａｘ ｏｂｔｕｓｉｄｅｎｔａｔａ。ｓｐ．ｎｏｖ。模式标本保存于陕西师范大学动物研究所标本室。     

浅谈蚱、蜢、蝗

蝗虫、炸姓是昆虫纲Insec匕、直翅目orthoptera中很大的类群,不少种类是农林牧业的重要害虫,其中有的种类可猖撅发生并形成蝗灾,如沙漠蝗dehistocercagrngarla（ForS－kal）、飞蝗LDcustamlgratoriaL．、意大利蝗Ca帅tamusitalicusL．、西伯利亚蝗Gompho－ceruss汕irlcusL．、印度黄脊蝗Patangasucc～nc贼hnnaeus）、黄脊竹蝗Ceracris伍ngsu＊。等。①沙漠蝗的记述可追溯到古埃及印制的书籍中和古墓内的壁滩上。在史前时期,它就是北非、西非和印度等沿热带地区之河谷、绿洲上的农业害虫。在古波斯人所用的楔形文字中也论及沙漠蝗。…     

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.