西双版纳地区的陆生等足类(甲壳亚门:等足目:潮虫亚目)

本文记述西双版纳地区陆生等足类１７种,包括７新种。新种模式标本保存于中国科学院动物研究所。种类名录如下。喜阴虫科Ｐｈｉｌｏｓｃｉｄａｅ 叶肢缅甸虫Ｂｕｒｍｏｎｉｓｃｕｓ ｌｏｂａｔｕｓ Ｋｗｏｎ ＆ Ｔａｉｔｉ,１９９３,勐仑缅甸虫,新种Ｂｕｒｍｏｎｉｓｃｕｓ ｍｅｎｇｌｕｎｅｎｓｉｓ ｓｐ．ｎｏｖ．,版纳缅甸虫,新种Ｂｕｒｍｏｎｉｓｃｕｓ ｂａｎｎｉｃｕｓ ｓｐ．ｎｏｖ．,易武缅甸虫,新种Ｂｕｒ     

四种锚首虫科包括一新种的描述

本报道采自广东阳江闸坡中华海鲶鳃上的锚首虫科四个虫种。包括一新种瘤钩小沙汉虫Ｃｈａｕｈａｎｅｌｌｕｓ ｔｕｂｅｒｈａｍａｔｕｓｓｐ．ｎｏｖ．。它以背中央大钩钩尖基部内侧具瘤状结构而区别于本属已记述的２１个种。其余为菠沙汉虫Ｃ．ｆｌｅｘｉｏｓｕｓ、海鲶血粳虫Ｈａｍａｔｏｐｅｄｕｎｃｕｌａｒｉａ ａｒｉｉ、和简单血梗虫．Ｈ．ｓｉｍｐｌｅｘ。     

中国鳞虫兆属Tom ocerus四新种(弹尾目:鳞虫兆科)

本文记述了中国鳞虫兆属Ｔｏｍ ｏｃｅｒｕｓ４新种,即紫胸鳞虫兆Ｔｏｍ ｏｃｅｒｕｓ（Ｔｏｍ ｏｃｅｒｉｎａ） ｐｕｒ－ｐｕｒｉｔｈｏｒｕｓ, ｓｐ． ｎｏｖ．, （四川）; 白鳞虫兆Ｔｏｍｏｃｅｒｕｓ（Ｔｏｍ ｏｃｅｒｉｎａ） ｃａｌｃｅｕｓ, ｓｐ． ｎｏｖ．, （四川）;巨鳞虫兆Ｔｏｍｏｃｅｒｕｓ（ｓ．ｓｔｒ．）ｍ ａｘｉｍｕｓ,ｓｐ．ｎｏｖ．（四川）;小鳞虫兆Ｔｏｍ ｏｃｅｒｕｓ（ｓ．ｓｔｒ．）ｅｍ ｅｉｃｕｓ, ｓｐ． ｎｏｖ． （四川）。模式标本保存于绵阳经济技术高等专科学校农艺系昆虫标本室。１． 紫胸鳞虫兆Ｔｏｍ ｏｃｅｒｕｓ（Ｔｏｍｏｃｅｒｉｎａ） ｐｕｒｐｕｒｉｔｈｏｒｕｓ, 新种（图１）鉴别特征：本种与Ｔ．（Ｔｏｍ ｏｃｅｒｉｎａ） ｍ ｉｎｕｔｕｓＴｕｌｌｂｅｒｇ １８７６ 非常相似,但其下列特征可与后者相区别：弹器齿节刺的刺式为５／７,１,弹器端节间齿数为５～７,爪内齿数为１,１,１,握弹器体上刚毛数为５支。正模：♀,四川峨眉山,１９－ ＩＶ－ １９９５,刘永琴;副模：４♀♀２♂♂,同正模。２． 白鳞虫兆Ｔｏｍ ｏｃｅｒｕｓ （Ｔｏｍ ｏｃｅｒｉｎａ） ｃａｌｃｅｕｓ, 新种（图２）鉴别特征：本种与Ｔ．（Ｔｏｍｏｃｅｒｉ     

凝血酶激活的单链尿激酶型纤溶酶原激活剂的构建、表达、纯化和性质研究

用Ｋｕｎｋｅｌ突变法,将单链尿激酶型纤溶酶原激活剂（ｓｃｕ－ＰＡ）ｃＤＮＡ基因中编码Ｐｒｏ１５５—Ｌｙｓ１５８的片段定点突变,并将此突变的ｓｃｕ－ＰＡ（ｔｓｃｕ－ＰＡ）的ｃＤＮＡ克隆到表达载体ｐＣＭ－β－ｎｅｏ中,与ｐＣＭ－ｄｈｆｒ共转染ＣＨＯ／ＤＨＦＲ－细胞．获得的稳定表达株在无血清培养基中２４ｈ的表达量为６２０ＩＵ／１０６细胞．经锌离子螯合Ｓｅｐｈａｒｏｓｅ亲和层析得到ｔｓｃｕ－ＰＡ纯品．ＳＤＳ－ＰＡＧＥ显示ｔｓｃｕ－ＰＡ分子量为５３ｋＤ左右,与预期的结果相符．ｔｓｃｕ－ＰＡ是由凝血酶激活而不是由纤溶酶激活,但激活后也能转变为双链分子（ｔｃｕ－ＰＡ）．ｔｓｃｕ－ＰＡ仍保持了ｓｃｕ－ＰＡ的血纤维蛋白亲和性．酶动力学研究表明,激活后的ｔｓｃｕ－ＰＡ水解Ｓ２４４４的Ｋｍ和Ｋｃａｔ值与高分子量尿激酶（ＨＵＫ）相似．体外溶栓实验结果表明,ｔｓｃｕ－ＰＡ可以选择性地溶解富含凝血酶的血凝块,对贫凝血酶的血凝块作用不大     

中国真缓步纲三新种及六新纪录种记述(近爪目:大生熊虫科,高生熊虫科)

记述了大生熊虫科大生熊虫属Ｍａｃｒｏｂｉｏｔｕｓ一新种和三新纪录种,即神农大生熊虫,新种Ｍ．ｓｈｅｎｎｏｎｇｅｎｓｉｓ ｓｐ．ｎｏｖ．桃形大生熊虫Ｍ．ｐｅｒｓｉｍｕｌｉｓ Ｂｉｎｄａ ＆ Ｐｉｌａｔｏ,１９７２,卷形大生熊虫Ｍ．ｒｏｌｌｅｉ Ｈｅｉｎｉｓ,１９２１,陆栖大生熊虫Ｍ．ｔｅｒｒｉｃｏｌａ Ｍｉｈｅｌｃｉｃ,１９４９以及趾生熊虫属一新种,即水生趾生熊虫,即长白等高熊虫,Ｉｓ,ｃｈａｎｇｂ     

四川省鱼类寄生粘孢子虫两新种（粘孢子纲：双壳目）

本四川省鱼类寄生粘孢子虫两新种：寄生墨头鱼的宜宾两极虫,新种Ｍｙｘｉｄｉｕｍ ｙｉｂｉｎｅｎｓｅ ｓｐ．ｎｏｖ．和寄生鳙Ａｒｉｓｔｉｃｈｔｈｙｓ ｎｋｂｉｌｉｓ的鳙单尾虫,新种Ｕｎｉｃａｕｄａ ａｒｉｓｔｉｃｈｔｈｙｄｉｓ ｓｐ．ｎｏｖ。     

云南新贝氏虫属一新种(指环虫目:锚首虫科)

报道了采自云南寄生于黄斑褶ＺｈａｏＰｓｅｕｄｅｃｈｅｎｅｉｓ ｓｕｌｃａｔｕｓ （ＭｃＣｌｅｌｌａｎｄ）鳃丝上的新贝氏虫属一新种－钳状新贝氏虫Ｎｅｏｂｙｃｈｏｗｓｋｙｅｌｌａ ｃｈｅｌｉｃｅｒｕｓ ｓｐ．ｎｏｖ．。     

中国瘿螨科三新种记述(蜱螨亚纲:瘿螨总科)

记述瘿螨科Ｅｒｉｏｐｈｙｉｄａｅ３新种：瘿螨亚科Ｅｒｉｏｐｈｙｉｄａｅ的相瘤瘿螨Ａｃｅｒｉａ ｃｅｌｔｉｄｉｓ Ｚｈａｏ ｅｔ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．;叶刺瘿螨亚科Ｐｈｙｌｌｏｃｏｐｔｉｎａｅ的无花果中瘿螨Ｓｉｎａｃｕｓ ｃａｒｉｃａｅＺｈａｏ ｅｔ Ｋｕａｎｇ,ｓｐ．ｎｏｖ．和柳顶冠瘿螨Ｔ ｅｇｏｌｏｐｈｕｓ ｓａｌｉｃｉｓ Ｋｕａｎｇ ｅｔ Ｚｈａｏ,ｓｐ．ｎｏｖ．。display structure     

持续农业与中国的生态农业

持续农业与中国的生态农业李萍萍,章熙谷（南京农业大学农学系,２１００１４）ＳｕｓｔａｉｎａｂｌｅＡｇｒｉｃｕｌｔｕｒｅａｎｄＣｈｉｎａ’ｓＥｃｏｌｏｇｉｃａｌＡｇｒｉｃｕｌｔｕｒｅ￥．ＬｉＰｉｎｇｐｉｎｇ;ＺｈａｎｇＸｉｇｕ（ＮａｎｊｉｎｇＡｇｒｉｃｕｌ－ｔｕｒａｌＵｎｉｖｅｒｓｉｔｙ,２１００１４）．ＣｈｉｎｅｓｅＪｏｕｒｎａＪｏｆＥｃｏｌｅｇｙ,１９９３,１２（２）：１６－１８．Ｔｈｅｂａｃｋｇｒｏｕｎｄ,ｃｏｎｃｅｐｔａｎｄｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔｕｒｅａｒｅｄｉｓｃｕｓｓｅｄ,ａｎｄｉｔｓｓｉｍｉｌａｒｉｔｉｅｓａｎｄｄｉｆｆｅｒｅｎｃｅｓｔｏＣｈｉｎａ’ｓｅｃｏｌｏｇｉｃａｌａｇｒｉｃｕｌｔｕｒｅａｒｅｄｅｓｃｒｉｂｅｄ．Ｉｔ’ｓｃｏｎｓｉｄｅｒｅｄｔｈａｔＣｈｉｎａ’ｓｅｃｏｌｏｇｉｃａｌａｇｒｉ－ｃｕｌｔｕｒｅｉｓａｃｏｎｃｒｅｔｅｒｅｆｌｅｃｔｉｏｎｏｆｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔｕｒｅａｎｄａｓｕｃｃｅｓｓｆｕｌｍｏｄｅｌｆｏｒａｇｒｉｃｕｌｔｕｒａｌｄｅｖｅｌｏｐ－ｍｅｎｔ．Ｋｅｙｗｏｒｄｓ：ｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔ     

太湖地区持续农业的发展战略与对策

太湖地区持续农业的发展战略与对策杨林章,徐琪（中国科学院南京土壤研究所,２１０００８）ＳｔｒａｔｅｇｉｅｓｆｏｒＤｅｖｅｌｏｐｉｎｇＳｕｓｔａｉｎａｂｌｅＡｇｒｉｃｕｌｔｕｒｅｉｎＴａｉＬａｋｅＲｅｇｉｏｎ￥．ＹａｎｇＬｉｎｚｈａｎｇ;ＸｕＱｉ（ＩｎｓｔｉｔｕｔｅｏｆＳｏｉｌＳｃｉｅｎｃｅ,ＡｃａｄｅｍｉａＳｉｎｉｃａ,Ｎａｎｊｉｎｇ,２１０００８）．ＣｈｉｎｅｓｅＪｏｕｒｎａｌｏｆＥｃｏｌｏｇｙ,１９９３,１２（２）：２７—２８．ｐｒｏｂｌｅｍｓａｎｄｃｈａｌｌｅｎｇｅｓｆａｃｅｄｂｙａｇｒｉｃｕｌｔｕｒａｌｄｅｖｅｌｏｐｍｅｎｔｉｎＴａｉＬａｋｅｒｅｇｉｏｎ,ｏｎｅｏｆｔｈｅｍｏｓｔｉｎｄｕｓｔｒｉａｌ－ｉｚｅｄｒｅｇｉｏｎｓｉｎＣｈｉｎａａｒｅｄｉｓｃｕｓｓｅｄａｎｄｓｔｒａｔｅｇｉｅｓｆｏｒｄｅｖｅｌｏｐｉｎｇｉｔｓｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔｕｒｅａｒｅｐｒｏｐｏｓｅｄｉｎｔｈｉｓｐａｐｅｒ．Ｋｅｙｗｏｒｄｓ：ｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔｕｒｅ,ＴａｉＬａｋｅｒｅｇｉｏｎ．１关于持续农业（ｓｕｓｔａｉｎａｂｌｅａｇｒｉｃｕｌｔｕｒｅ）近年来在一些地区由于不合理的利用土地资源,过     

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.