青第省花蝇科二新种（双翅目）

记述青海省花蝇科Ａｎｔｈｏｍｙｉｉｄａｅ２新种,即周氏泉种蝇Ｐｅｇｏｈｙｌｅｍｙｉａ ｃｈｏｕｉ,ｓｐ．ｎｏｖ．及多曲草种蝇ｈｏｒｂｉａ ｐｏｌｙｓｔｒｅｐｓｉｓ,ｓｐ．ｖｎｏ．。模式标本均存中国科学院上海昆虫研究所。     

四川省岷山地区花蝇科泉种蝇属四新种（双翅目;花蝇科）

本文记述四川省松潘县和茂汶县地区花蝇科泉种蝇属４新种,即蝶肛泉肿蝇Ｐｅｇｏｈｙｌｅｍｉａ ｐａｐｉｌｉｏｃｅｒｃａ ｓｐ．ｎｏｖ。巨板泉种蝇Ｐｅｇｏｈｙｌｅｍｙｉａ ａｌｃａｅｃｅｒｃａ ｓｐ．ｎｏｖ。角泉种蝇Ｐｅｇｏｈｙｌｅｍｙｉａ ｃｏｒｎｕｔａ ｓｐ．ｎｏｖ．四尖泉种蝇Ｐｅｇｏｈｙｌｅｍｙｉａ ｔｅｔｒａｃｒｕｌａ ｓｐ．ｎｏｖ。     

贵州花蝇科一新种（双翅目：花蝇科）

本文采自贵州中部齿岭山地（普定）的花蝇科１新种：黑隰蝇Ｈｙｄｒｏｐｈｏｒｉａ ｐｕｌｌａｔａ，ｓｐ．ｎｏｖ．。新种的模式标本保存于贵州安顺地区卫生防疫站昆虫标本室。     

中国蝇科二新属二新种（双翅目：蝇科）

整理新疆地区蝇科标本中,发现二新属和二新种,其中花秽蝇属,新属Ａｎｔｈｏｃｏｅｎｓｉａ ｇｅｎ．ｎｏｖ．隶于秽蝇亚科Ｃｏｅｎｓｏｉｉｎａｅ,叉棘蝇属,新属Ｃｒｕｓｉａｅｌｌａ ｇｅｎ．ｎｏｖ．隶于棘蝇亚科Ｐｈａｏｎｉｉｎａｅ。新种模式标本保存于沈阳师范学院生物系。     

中国辽宁蕨蝇属一新种(双翅目:花蝇科)

发现分布于我国辽宁省的花蝇科Anthomyiidae蕨蝇属Chirosia一新种:附突蕨蝇Chirosia appendiprotuberans sp.nov.。模式标本采自辽宁省本溪市,文中给出了新种的种类描述、特征图和属的隶属问题。     

辽宁省植蝇属一新种(双翅目：花蝇科)

辽宁省植蝇属一新种（双翅目：花蝇科）张连富张大丽（辽宁省朝阳市卫生防疫站朝阳１２２０００）１９９５－０３－１５收稿,１９９６－０４－２６收修改稿·１０３·辽宁植蝇Ｌｅｕｃｏｐｈｏｒａｌｉａｏｎｉｎｇｅｎｓｉｓ新种（图１～４）雄性体长７．５ｍｍ。头眼裸...     

辽宁省花蝇科二新种(双翅目:花蝇科)

记述采自辽宁省的花蝇科2新种,即分布于辽宁省桓仁县老秃顶山的老秃顶须泉蝇Pegoplata laotuding-ga sp.nov。该种外形与丁斑须泉蝇Pegoplata linotaenia(Ma,1988)近似,但新种雄性前胫无前背鬃,翅前鬃短小,腹部各背板均具倒山字形黑斑;肛尾叶端部较狭,侧尾叶后面观较细长,其侧面观端半部较宽大,末端较圆;前阳基侧突端半部狭,后缘具1根小毛等不同。分布于辽宁省本溪南甸的中叶泉蝇Pegomya mediarmata sp.nov,该种与并棘泉蝇Pegomya holosteae(Hering,1924)近似,但新种具上倾口缘鬃1行,前颏发亮,翅前鬃长于后背侧片鬃;下腋瓣短小;前胫无前背鬃,中胫无后腹鬃,后胫前背鬃2;第5腹板具中叶,侧叶基部和端部分别具一鬃毛簇,阳茎具宽大的端阳体等不同,模式标本保存于沈阳师范大学昆虫研究所。     

云南省花蝇科三新种(双翅目:花蝇科)

记述采自云南省花蝇科3新种,即：①分布于云南省禄劝的范氏草种蝇Phorbia fani sp.nov.,该种近似于四川产的峨眉草种蝇Phorbia omeishanensis Fan,1982,但新种雄性具1根上眶鬃;前中鬃1对,肩后鬃1：2,无后背侧片鬃;第5腹板侧叶的内缘具4行小刚毛,侧尾叶侧面观其中部宽大,后面观其端部较直等不同于已知种。②分布于土产兰坪冷山的冷山须泉蝇Pegoplata lengshanensis sp.nov.,该种雄性主要特征近似于,河南须泉蝇Pegoplata henanensis(Ge et Fan,1982）,但新种具间额鬃,侧颜为触角宽的2／3,芒具长纤毛,最长芒毛为触角宽的2／5（约为芒基的2倍）,后头背区裸;盾片具3条棕色粉被条;后股有1列后腹鬃;阳茎端部圆形,不向两侧呈角状延伸等不同。③分布于云南省泸水片马的云南泉蝇Pegomya yunnanensis sp.nov.,该种近似日本泉蝇Pegomya japonica Suwa,1974,但新种雄笥前中鬃呈2列体毛状,腹侧片鬃1＋3;中胫无后腹鬃,后胫后背鬃2;第5腹板侧叶侧面观较细长,侧尾叶后面观较宽,侧面观其端部前缘稍弯曲,前、后阳基侧突的形状不同。模式标本保存于沈阳师范大学昆虫研究所。     

甘肃酒泉地区花蝇科二新种(双翅目)

作者之一于1983年间于酒泉地区采得花蝇科标本9种:1.骚花蝇 Anthomyia procellaris Rondani酒泉,1;2.葱地种蝇 Delia antiqua(Meigen)酒泉,1;3.灰地种蝇 Delia platura(Meigen)肃北,1;4.灰宽颊叉泉蝇 Eutrichota(Arctopegomyia)pallidoldtigena新种,肃 北,2;     

四川省阳蝇属三新种：双翅目：蝇科

阳蝇属三新种,双鬃阳蝇,新种Ｈｅｌｉｎａｄｕｐｌｉｃｉｓｅｔａｓｐ．ｎｏｖ;大斑阳蝇,新种Ｈｅｌｉｎａｍａｇｎｉｍｕｃｕｌａｔａｓｐ．ｎｏｖ。欢愉阳蝇,新种Ｈｅｌｉｎｉａｈｅｓｔａｓｐ．ｎｏｖ。模式标本Ｉ号存华西医科大学,Ⅱ,Ⅲ号存在于雅安地区卫生防疫站。     

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.