中国七纺蛛属二新种(蜘蛛目:节板蛛科)

记述了采自湖南省的七纺蛛层2新种：慈利七纺蛛,新种Heptathela ciliensis sp.nov和索溪峪七纺蛛,新种Heptathela suoxiyuensis sp.nov。模式标本保存在湖南师范大学生命科学学院。文中量度单位mm。     

中国七纺蛛属1新种（蜘蛛目：节板蛛科）

记述我国节板蛛科七纺蛛属1新种,命名为佘氏七纺蛛,新种Heptathela shei sp.nov.。     

香港七纺蛛属（蜘蛛目：节板蛛科）一新种

记述采自香港的节板蛛科七纺蛛属一新种,定名为香港七纺蛛Ｈｅｐｔｙａｔｈｅｌａｈｏｎｇｋｏｎｇｓｐ．ｎｏｖ．,以庆贺香港回归祖国。     

中国七纺蛛属2新种(蜘蛛目:节板蛛科)

记述采白湖北省的七纺蛛属2新种:岁田七纺蛛,新种 Ileptathela luotianensis sp. nov. 和咸宁七纺蛛,新种 Heptathela xianmngensis sp. nov.。     

中国七纺蛛属一新种(蜘蛛目,节板蛛科)

记述了中国湖南省节板蛛科Liphistiidae七纺蛛属Heptathela1新种：莽山七纺蛛Heptathela mangshan sp．nov．。新种与Heptathela sinensis Bishop and Crosby,1932相似,但有如下区别：前者的引导器仅1齿,而后者的引导器具2个大齿和1个小齿;两者的反盾片都有齿,但后者在基部有2个分离的齿,前者没有;两者的插入器形状不同。新种以模式产地而命名。模式标本保存于湖南师范大学生命科学学院。     

狼蛛,蟹蛛和跳蛛

狼蛛、蟹蛛和跳蛛分别是蜘蛛目中三个科的蜘蛛的通称。这三类蜘蛛包括了我们日常见到的游猎型蜘蛛的大部分种类,它们在帮助人类消灭害虫中所起作用也较大,所以作为动物学教学中的例子加以介绍。 (一)狼蛛狼蛛在地面或植物上疾驰,凶狠如狼,故名。体长3-25毫米,但多数种类在5-8毫米间。体色多黄褐色,不鲜艳。8眼,排成三列。前列4个小眼,中、后两列各2个眼,较大;后列两眼的间距稍大于中列两眼的间距(图1左)。卵袋扁球形,由两片半圆形丝膜缝合而成。卵袋挂在母蛛腹部后端的纺器上,由母蛛随身携带。幼蛛孵出后不分散,而是爬伏在母蛛腹部     

真水狼蛛纺器的扫描电镜观察

通过室内饲养,获得了不同龄期的真水狼蛛。对其纺器扫描电镜观察表明：真水狼蛛的纺器表面分布许多纺管,纺管的数目随着龄期的增大面增加。１龄幼蛛纺器分化没有完成。因而不能纺丝。雌蛛和雄蛛在纺器的排列位置、形态、纺管类型和纺管数目上都存在较大差异。纺器的形态、结构与纺器纺丝、结网的功能相适宜。     

我国南方八纺器蛛一新种：蜘蛛目：八纺蛛科

次坪八纺蛛,新种Liphistius cipingensis sp.nov.采自江西省井冈山次坪。正模♀保存于湖南师范大学生物系。     

中国隙蛛属七新种（蜘蛛目：漏斗蛛科）

隙蛛属Ｃｏｅｌｏｔｅｓ隶属呈漏斗蛛科Ａｇｅｌｅｎｉｄａｅ．本文记述隙蛛属蜘蛛七新种：双轮隙Ｃ．ｓｙｚｙｇｉａｔｕｓ ｓｐ．ｎｏｖ．,月形隙蛛Ｃ．ｌｕｎｉｆｏｒｍｉｓ ｓｐ．ｎｏｖ．,似阴暗隙蛛Ｃ．ｓｕｂｌｕｃｔｕｏｓｕｓ ｓｐ．ｎｏｖ．,弯曲隙Ｃ．ｐａｌｉｎｉｔｒｏｐｕｓ ｓｐ．ｎｏｖ．。     

奎孔蛛（跳蛛科）雌蛛记述

本文记述奎孔蛛的雌性和雄性鉴别特征。雌蛛最初记述于越南,雌蛛系新发现。文内附以雄蛛左触肢的腹面观和侧面观,其中侧面观的角度与原定名人的附图的角度不同,以供读者参考。本种在我国系新记录,产于湖南和云南两省,其实际分布范围尚待进一步调查。     

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.