中国鸣蝗属一新种(直翅目:蝗总科)

报道采自重庆市万盛地区鸣蝗属一新种。重庆鸣蝗Ｍｏｎｇｏｌｏｔｅｔｔｉｘ ｃｈｏｎｇｑｉｎｇｅｎｓｉｓ ｓｐ．ｎｏｖ．,新种近似于异翅鸣蝗Ｍｏｎｇｏｌｏｔｅｔｔｉｘ ａｎｏｍｏｐｔｅｒｕｓ（Ｃａｕｄ．）。主要区别为雌性前翅顶端具凹口;雄性前翅达后足股节膝部;雄性得部末节北板具圆形尾片。     

青海省原金蝗属一新种（直翅目：蝗总科）

本文记述青海省蝗虫一新种－巴颜喀拉原金蝗Ｅｏｋｉｎｇｄｏｎｅｌｌａ ｂａｙａｎｈａｒｅｎｓｉｓ ｓｐ．ｎｏｖ．,新种与西藏原金蝗Ｅｏｋｉｎｇｄｏｎｅｌｌａ ｔｉｂｅｔａｎａ（Ｍｉｓｔｓｈ．）及昌都原金蝗Ｅｏｋｉｎｇｄｏｎｅｌｌａ ｃｈａｎｇｔｕｎｉｃａ Ｙｉｎ近似。     

山西雏蝗属二新种记述(直翅目:网翅蝗科)

记述山西省吕梁地区雏蝗属Ｃｈｏｒｔｈｉｐｐｕｓ Ｆｉｅｂｅｒ,１８５２二新种,即似鹤立雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｆｕｓｃｉｐｅｎｎｏｉｄｅｓ Ｍａ,Ｚｈｅｎｇ ｅｔ Ｇｕｏ,ｓｐ．ｎｏｖ．和关帝山雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｇｕａｎｄｉｓｈａｎｅｎｓｉｓ Ｍａ,Ｚｈｅｎｇ ｅｔ Ｇｕｏ,ｓｐ．ｎｏｖ．。模式标本保存于山西大学生命科学系动物标本室。     

贺兰山地区雏蝗属二新种记述(直翅目:网翅蝗科)

记述在贺兰山西侧阿拉善左旗采到的网支蝗科雏蝗二新种，即阿拉善雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ａｌｘａｅｎｓｉｓ Ｚｈｅｎｇ，ｓｐ．ｎｏｖ，及哈拉乌雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｈａｌａｗｕｅｎｓｉｓ Ｚｈｅｎｇ，ｓｐ，ｎｏｖ．。     

东北地区蝗虫－新属及三新种（直翅目：蝗总科）

本文记述了采自东北地区蝗虫的一新属,拟蹦蝗属Ｓｉｎｏｐｏｄｉｓｍｏｉｄｅｓｇｅｎ．ｎｏｖ．及三新种,千山拟蹦蝗Ｓｉｎｏｐｏｄｉｓｍｏｉｄｅｓｑｉａｎｓｈａｎｅｎｓｉｓｓｐ．ｎｏｖ．、草绿拟蹦蝗Ｓｉｎｏｐｏｄｉｓｍｏｉｄｅｓｐｒａｓｉｎａｓｐ．ｎｏｖ．和长白山玛蝗Ｍｉｒａｍｅｌｌａｃｈａｎｇｂａｉｓｈａｎｅｎｓｉｓｓｐ．ｎｏｖ．。模式标本保存于陕西师范大学动物研究所。     

条纹鸣蝗雌雄嵌体记述

条纹鸣蝗雌雄嵌体记述郑一平（东北师范大学生物系长春１３００２４）关于双翅目、鳞翅目、膜翅目和直翅目昆虫的雌雄嵌体,前人曾就不同问题做过许多工作,但鸣蝗属中雌雄嵌体的报道尚未见到。本文就采自大连菜达岭的条纹鸣蝗Ｍｏｎｇｏｌｏｔｅｔｔｉｘｊｏｐｏｎｉｃｕ...     

甘肃省雏蝗属一新种记述（蝗总科：网翅蝗科）

本文记述了雏蝗属一新种：短角雏蝗（Ｃｈｏｒｔｈｉｐｐｕｓｂｒｅｖｉｃｏｒｎｉｓｓｐ．ｎｏｖ．,采自甘肃省肃南县宝瓶河牧场。模式标本存于陕西师范大学动物研究所。     

浙江省小蹦蝗属一新种

本文记述采自中国浙江省的小蹦蝗属１新种，即乌岩岭小蹦蝗Ｐｅｄｏｐｏｄｉｓｍａ ｗｕｙａｎｌｉｎｇｅｎｓｉｓ，ｓｐ．ｎｏｖ．模式标本保存于山东大学生物系。     

蝗虫 蝗灾 治蝗

１蝗虫蝗虫属于节肢动物门、昆虫纲、直翅目、蝗科。蝗科的种类全世界有１万多种,我国有３００多种。很多种类都是庄稼的害虫。如中华稻蝗Ｏ．ｃｈｉｎｅｎｓｉｓ,红翅重蝗,Ｐ．ｓａｕｔｅｒｉ,尤其是东亚飞蝗Ｌｏｃｕｓｔａｍｉｇｒａｔｏｒｉａｍａｎｉｌｅｎｓｉｓ...     

大兴安岭地区雏蝗属一新种(直翅目:蝗总科)

雏蝗属Ｃｈｏｒｔｈｉｐｐｕｓ Ｆｉｅｂｅｒ是网翅蝗科中一个大属,广泛分布于中国古北区。本文记述采自内蒙古大兴安岭地区的雏蝗属一新种：额左旗雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｅｚｕｏｑｉｅｎｓｉｓ ｓｐ．ｎｏｖ．,模式标本保存于东北师范大学生物系动物标本室。     

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.