中国粉蚧科一新属一新种（同翅目：蚧亚目）

记述我国粉蚧科１新属：结粉蚧属Ｓｉｎｏｃｏｃｃｕｓ,ｇｅｎ．ｎｏｖ．及其模式种：采自天津南开大学校园榆树Ｕｌｍｕｓ ｐｕｍｉｌａ Ｌ．枝干树皮裂缝内的榆华粉蚧Ｓｉｎｏｃｏｃｃｕｓ ｕｌｍｉ,ｓｐ．ｎｏｖ．。模式标本保存在南开大学生物系。     

中国绵粉蚧属种类记述(同翅目:蚧总科:粉蚧科)

研究和整理了中国绵粉蚧属Ｐｈｅｎａｃｏｃｃｕｓ Ｃｏｃｋｅｒｅｌｌ的种类和分布。截至目前,我国该属计有２０种,其中包括本文３新种：无管绵粉蚧Ｐ．ａｔｕｂｕｌａｔｕｓ ｓｐ．ｎｏｖ．,内蒙粉蚧Ｐ．ｎｅｉｍｅｎｇｕｌｉｃｕｓ ｓｐ．ｎｏｖ．和山西绵粉蚧Ｐ．ｓｈａｎｘｉｅｎｓｉｓ ｓｐ．ｎｏｖ．及６个中国新纪录种：盐木绵粉蚧Ｐ．ａｒｔｈｒｏｐｈｙｔｉ Ａｒｃｈａｎｇｅｌｓｋａｙａ,时麦绵粉蚧Ｐ．ｐｒｅｉ     

中国黑粉蚧属及其近似属种类记述(半翅目:蚧总科:粉蚧科)

研究和整理了我国黑粉蚧属Ａｔｒｏｃｏｃｃｕｓ及其近似属的种类,计有５属１２种,其中包括２新种;鹤虱奥粉蚧Ａｌｌｏｃｏｃｃｕｓ ｌｅｐｐｕｌｕｓ Ｗｕ,ｓｐ．ｎｏｖ和山西配粉蚧Ａｌｌｏｔｒｉｏｎｙｍｕｓ ｓｈａｎｘｉｅｎｓｉｓ Ｗｕ,ｓｐ．ｎｏｖ．,和个中国新纪录种,细长黑粉蚧Ａｔｒｏｃｏｃｃｕｓ ｃｒａｃｅｎｓ Ｗｉｌｌｉａｍｓ。模式标本保存在山西农业大学蚧虫研究中心。     

枝圆盾蚧属新种记述（同翅目：蚧总科：盾蚧科）

本文记述了枝圆盾蚧属Ｄｉａｓｐｉｄｉｏｔｕｓ Ｃｏｃｋｅｒｅｌｌ一新种,危枝圆盾蚧Ｄｉａｓｐｉｄｉｏｔｕ ｐｅｒｎｉｃｉａｂｉｌｕｓ ｓｐ．ｎｏｖ．,该属是盾蚧科Ｄｉａｓｐｉｄｉｄａｅ中的一个小属。新种的模式标本保存在中国科学院动物研究所。     

绛蚧属一新种记述（同翅目：蚧总科：绛蚧科）

本文记述了采自云南西双版纳的绛蚧属１新种－－版纳绛蚧Ｋｅｒｍｅｓ ｂａｎｎａｅｎｓｉｓ Ｌｉｕ ｓｐ．ｎｏｖ．,对其雌、雄成虫和一龄若虫的形态特征分别进行了详细描述和图示。模式标本保存于山东农业大学植物保护系昆虫标本室。     

粉蚧科一新属一新种（同翅目：蚧总科）

本文记述同翅目蚧总科粉蚧科一新属一新种。即异星粉蚧属Ｈｅｔｅｒｏｈｅｌｉｏｃｏｃｃｕｓ ｇｅｎ．ｎｏｖ．,内蒙异星粉蚧Ｈ．ｉｎｎｅｒｍｏｎｇｏｌｉｃｕｓ ｓｐ．ｎｏｖ．。新种模式标本保存在山西农业大学蚧虫研究中心。     

皮珠蚧亚科—中国新记录属和一新种：同翅目：蚧总科：珠蚧科

本文讨论了中国新记录长珠蚧属Ｎｅｏｇｒｅｅｎｉａ的分类地位,记述了寄生在刺树皮下的１新种－枣树长珠蚧Ｎ．ｚｉｚｙｐｈｉ,ｓｐ．ｎ．,模式标本存放在山西农业大学植物保护系。     

山西星粉蚧属二新种记述（同翅目：蚧总科：粉蚧科）

本文记述采自中国山西的星粉蚧属２新种,模式标本保存在山西农大蚧虫研究中心。１．无脐星粉蚧Ｈｅｌｉｏｃｏｃｃｕｓａｃｉｒｃｕｌｕｓ,新种（图１）本新种与Ｈ．ＢａｏｔｏｕｉＴａｎｇ,１９８８为本属中无腹脐者。两种的区别在于后种星管腺２种,且多;而新种星管腺１种,且少。正模♀,蒿（Ａｒｔｅｍｉｓｉａｓｐ．）,山西沁水,１９９５－Ⅶ－２１,武三安采;副模１２♀♀,同正模;５♀♀,青蒿（Ａｒｔｅｍｉｓｉａａｐｉａｃｅａ）,其它同正模２．苜蓿星粉蚧Ｈｅｌｉｏｃｏｃｃｕｓｍｅｄｉｃａｇｉｃｏｌａ,新种（图２）本新种与Ｈ．ｐａｖｌｏｖｓｋｉＢｏｒｃｈｓｅｎｉｕｓｅｔＴｅｒｅｚｎｉｋｏｖａ,１９５９相近,其区别在于新种星管腺少,只在后体部存在,而后种星管腺多,在体背缘成纵列。正模♀,苜蓿（Ｍｅｄｉｃａｇｏｓａｔｉｖａ）,山西沁水,１９９５－Ⅶ－２２,武三安采;副模６♀♀,同正模     

皮珠蚧亚科一中国新记录属和一新种（同翅目：蚧总科：珠蚧科）

本文讨论了中国新记录长珠蚊属Ｎｅｏｇｒｅｅｎｉａ的分类地位,记述了寄生在枣树皮下的１新种──枣树长珠蚧Ｎ．ｚｔｚｙｐｈｉ,ｓｐ．ｎ．,模式标本存放在山西农业大学植物保护系。     

四索跳小蜂属二新种(膜翅目:跳小蜂科)

本文记述跳小蜂科四索跳小蜂属二新种,白轮蚧四索跳小蜂Ｐｌａｇｉｏｍｅｒｕｓ ａｕｌａｃａｓｐｉｓ ｓｐ．ｎｏｖ．和大棒四索跳小蜂Ｐｌａｇｉｏｍｅｒｕｓ ｍａｇｎｉｃｌａｖｕｓ ｓｐ．ｎｏｖ．标本采自云南省,从柑桔上的盾蚧育得。     

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.