中国蚤蝇属记述：双翅目：蚤蝇科

中国蚤蝇属记述（双翅目：蚤蝇科）刘广纯,周尧（西北农业大学昆虫博物馆,陕西省杨陵区７１２１００）关键词双翅目,蚤蝇科,蚤蝇属,新种,分类学,中国蚤蝇属（ＰｈｏｒａＬａｔｒｅｉｌｌｅ,１７９６）是蚤蝇科中较大的类群;其身体绒黑（♂）或暗黑（♀）,中足胫...     

基因序列在蚤蝇科分子系统学研究中的应用

概述基因序列在双翅目蚤蝇科分子系统学研究中的应用。对蚤蝇科已测序的分类单元和基因序列进行了总结,12S rDNA和16S rDNA应用最广泛,涉及蚤蝇科17个属;获得基因序列最多的是Melaloncha属。蚤蝇科分子系统学研究内容为高级阶元系统发育分析、物种鉴定和隐存种发现。今后蚤蝇科分子系统学研究应增加蚤蝇标本的种类与数量,选择标准化基因。     

中国锥蚤蝇属(双翅目,蚤蝇科)一新种和一新纪录种(英文)

记述了中国蚤蝇科锥蚤蝇属Conicera 1新种和1新纪录种,指突锥蚤蝇Conicera digitalis sp.nov.和方叶锥蚤蝇Conicera quadrata Michailovskaya.指突锥蚤蝇与肾叶锥蚤蝇相似,但两者在前缘脉指数及侧尾叶形状上有所区别.模式标本存于沈阳大学生物与环境工程学院.     

云南所麻蝇属一新种记述：双翅目：麻蝇科

作者在整理1985年采集的麻蝇科标本中,发现所麻蝇属(SarcosolomoniaBaranov)1新种。模式标本分别保存于云南省卫生防疫站和军事医学科学院微生物流行病研究所。     

中国异蚤蝇属二新种记述（双翅目：蚤蝇科）

记述中国异蚤蝇属2新种:羽鬃异蚤蝇Megaselia pennisetalis sp.nov.和膨跗异蚤蝇Megaselia tarsocrassa sp.nov.。羽鬃异蚤蝇的体色和尾器的羽状鬃与M.rufipes(Meigen)相似,但后者的中侧片光裸无毛。膨跗异蚤蝇与M.turbidipennis Borgmeier相似,但后者翅较暗、Rs脉基部具1微毛、前缘脉比3.80:1.60:1.00。模式标本存放于沈阳大学城市有害生物治理与生态安全辽宁省重点实验室。     

中国寒蚤蝇属一新种记述（双翅目：蚤蝇科）

记述中国寒蚤蝇属Triphleba Rondani 1新种:壳叶寒蚤蝇Triphleba conchiformis sp. nov.。本新种缺R2+3,其贝壳状侧尾叶区别于本属其它种。模式标本存放于沈阳大学城市有害生物治理与生态安全辽宁省重点实验室。     

中国蚤蝇属一新种及一新纪录种记述(双翅目,蚤蝇科)

记述了我国蚤蝇科蚤蝇属Phora 1新种,又突蚤蝇Phora furcularis Liu et Wang,sp.nov.和1新纪录种,缺齿蚤蝇P.edentata Schmitz.P.furcularis与P.zherikhini Mostovski相似,但前者额向后渐狭,生殖背板侧叶无钩状突,且左侧尾叶后背部生有"Y"形脊.模式标本存于沈阳大学生物与环境工程学院.     

中国新纪录属--脉蚤蝇属及二新种记述(双翅目,蚤蝇科)

报道了中国新纪录属脉蚤蝇属Anevrina Lioy,并记述该属2新种,微毛脉蚤蝇A microcilia Liu et Fang,sp.nov.和裸斑脉蚤蝇A.glabrata Liu et Zhu,sp.nov..微毛脉蚤蝇与A.unispinosa(Zetterstedt)相似,但前者Rs脉的细毛极弱,尾器侧尾叶细长;裸斑脉蚤蝇以中足腿节前表面的长卵形裸斑区别于本属其它种.模式标本存于沈阳大学生物与环境工程学院.     

中国四川阳蝇属二新种及华西粪蝇补充描述（双翅目：蝇科，粪蝇科）

报道中国四川地区蝇科阳蝇属Helina Robineau-Desvoidy,1830二新种,黑肩阳蝇Helina ateritegula,sp.nov.,拱阳蝇Helina arcuatiabdomina,sp.nov.,并对粪蝇科粪蝇属Scathophaga Meigen,1803的华西粪蝇Scathophaga chinensis (Malloch,1935)作补充描述,新种模式标本存中国科学院上海昆虫研究所昆虫标本馆。     

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。     

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.