中国内蒙古地区点池蝇属一新种(双翅目,蝇科)

记述分布于内蒙古地区的蝇科Muscidae秽蝇亚科Coenosiinae中的点池蝇属Spilogona Schnabl 1新种:鹦喙点池蝇S.psittorhamphos sp.nov..模式标本保存于军事医学科学院微生物流行病研究所医学昆虫标本馆.     

中国四川毛膝蝇属的研究并记一新种(双翅目:蝇科)

毛膝蝇属Hebecnema隶属双翅目Diptera蝇科Muscidae圆蝇亚科Mydaeinae圆蝇族Mydaeini,为Schnabl于1889年以Anthomyia umbratica Meigen,1826为模式种而建立的属,为蝇科中的1个小属,迄今全世界已知23种,中国记录在册的有10种,占43.5%,其中特有种7种,占我国已知种的70.0%.目前四川省已知种有5种,占我国已知种的40.0%,足见四川毛膝蝇属种类的多样性,是天赋的极其宝贵的基因库.本文编制了四川省毛膝蝇属已知种检索表,并对其中1个新种:冠状毛膝蝇Hebecnema coronata Feng et Wang, sp.nov的鉴别特征进行了详细描述.新种模式标本藏于中国科学院上海植物生理生态研究所昆虫博物馆.     

晋北地区有瓣蝇类的研究及蝇科三新种记述(双翅目)

整理近年来采自山西省北部山区蝇科标本中,发现阳蝇属(Helina R.-D.)二新种和点池蝇属(Spilogona Schnabl)一新种,一并描述。新种模式标本保存于沈阳师范学院生物系。 1.角叶阳蝇Helina angulicerca新种(图1—4) 雄体长:8.5毫米。复眼具短疏纤毛,额宽约为前单眼横径3倍,下眶鬃7—8对,分布于额下半部,无上眶鬃,侧颜约为触角宽1.7倍,触角暗黑,芒羽状,最长芒毛约为触角     

河北省点池蝇属二新种及厕蝇属一新纪录(双翅目:蝇科)

整理采自河北省的蝇科标本中,发现点池蝇属Spilogpna Schnabl,1911二新种和厕蝇属Fannia R.-D.,1830一新纪录种,特此描述。新种模式标本存于沈阳师范学院生物系。     

中国四川省有瓣蝇类三新种(双翅目:厕蝇科,蝇科)

报道采自中国四川省西部山区有瓣蝇类Calyptraae3新种：厕蝇科Fanniiade厕蝇属Fannia2新种：五枝厕蝇Fannia quinquiramula sp.nov.,虞氏厕蝇Fannia yui sp.nov.;蝇科Muscidae棘蝇属Phaonia 1新种：太子棘蝇Phaonia taizipingga sp.nov.。新种虞氏侧蝇的命名,系对虞以新教授在中国蠓科Ceratopogoinidae等医学昆虫研究所作杰出贡献的敬意。厕蝇科模式标本存中国沈阳师范学院昆虫研究所;蝇科模式标本存北京军事医学科学院微生物流行病研究所医学昆虫标本馆。     

中国丽蝇亚科乌丽蝇族二新种（双翅目：丽蝇科）

记述采自中国四川省丽蝇科乌丽蝇族Melanomyini中的鬃腹丽蝇属Tricy-cleopsis Villeneuve,1927和尼蚓蝇属Nepalonesia Kurahashi et Thapa,1994的2新种：毛角鬃腹丽蝇Tricycleopsis pilantenna,sp.nov;范氏尼蚓蝇Nepalonesia fanzidei,sp.nov,模式标本存中国科学院上海昆虫研究所昆虫标本馆。     

中国角潜蝇属莎草潜蝇亚属分类研究(双翅目,潜蝇科)

对中国角潜蝇属莎草潜蝇亚属进行了分类研究,确认我国现知2种：即福建角潜蝇C.(B.)fujianisca sp.nov和苔角潜蝇Cerodontha(Butomomyza)cornigera(dc Meijcrc)。除新种描述并附特征图外,还提供该亚属中国种类分种检索表。模式标本保存于中国科学院动物研究所动物标本馆。     

云南棘蝇属二新种 (双翅目:蝇科)

报道云南省蝇科棘蝇属Phaonia R.D2种,分别命名为滇西棘蝇Phaonia dianxiia sp.nov.和极乐棘蝇Phaonia paradisia sp.nov.,均隶属于仿游荡棘蝇种团P.simulans-group中的褐基棘绳亚种团P.fuscicoxa-subgroup。模式标本保存于沈阳师范学院昆虫研究所。     

四川西部蝇科三新种(双翅目：蝇科)

整理1979～1996年采自中国四川省西部的蝇类标本中,发现蝇科三新种：树棘蝇属 Potamia Robineau-Desvoidy, 1830一新种：鬃跗树棘蝇Potamia setitarsis sp. nov.; 胡蝇属 Drymeia Meigen,1826一新种：四川胡蝇Drymeia sichuanensis sp. nov; 池蝇属 Limnophora Robineau-Desvoidy, 1830一新种：灰黄池蝇 Limnophora cinerifulva sp. nov。模式标本存北京军事医学科学院医学昆虫标本馆。     

齿股蝇属一新种和一新纪录：（双翅目：蝇科）

本文记述产自甘肃省舟曲县齿股蝇属的一新种和采自新疆玛纳斯县齿股蝇属的一新纪录种。新种订名为多刺齿股蝇Hydrotaea spinosus,sp.nov.与毛足齿股蝇 H.Pilipes Stein,1903和拟毛足齿股蝇(H.mimopilipes Ma et Zhao)近缘。正模和副模2分别保存在军事医学科学院微生物流行病研究所和辽宁省卫生防疫站。     

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.