中国豆芫菁属一新种及二雌性补充描述（鞘翅目，芜菁科）

记述云南豆芫菁属1新种,即缘毛豆芫菁,新种Epicauta seriata sp.nov.;编制了凹跗豆芫菁组Epicauta interrupta group已知种检索表;并对钩刺豆芫菁E．curvispina Kaszab和墨江豆芫菁E．mojiangensis Tan雌性进行了补充描述。模式标本保存于河北大学博物馆。     

中国豆芫菁属一新种及二雌性补充描述(鞘翅目,芫菁科)

记述云南豆芫菁属1新种,即缘毛豆芫菁,新种Epicauta seriata sp.nov.;编制了凹跗豆芫菁组Epicauta interrupta group已知种检索表;并对钩刺豆芫菁E.curvispina Kaszab和墨江豆芫菁E.mojiangensis Tan雌性进行了补充描述.模式标本保存于河北大学博物馆.     

芫菁科昆虫体内斑蝥素的气相色谱法测定

分别采用酸水解法和直接浸提法处理不同种芫菁样品、短翅豆芫菁Epicauta aptera Kaszab的卵和大斑芫菁Mylabris phalerata Pallas的不同虫体部位,后用气相色谱仪测定斑蝥素含量。结果表明:用酸水解法处理后的芫菁体内斑蝥素含量较之用直接浸提法处理后有显著提高,增高幅度在1~9倍之间,其中以豆芫菁属Epicauta昆虫的增高幅度最大,一般在7倍以上,而斑芫菁属Mylabris的斑蝥素含量增幅不高,芫菁卵中斑蝥素含量变化不显著;斑蝥素主要富集于大斑芫菁的腹部。     

中国沟芫菁属分类研究及一新种记述(鞘翅目,芫菁科)

总结中国沟芫菁属Hycleus Latreille,1817并记述1新种:毛背沟芫菁Hycleus dorsetiferus sp.nov.及1新组合:多毛沟芫菁Hycleus hirtus(Tan,1992)comb.nov.。新种模式标本保存在河北大学博物馆。提供了中国已知种类的分种检索表。     

基于触角感器的部分芫菁属、种分类地位和关系分析(鞘翅目:芫菁科)

针对斑芫菁族分类系统中伪斑芫菁属Pseudabris分类关系的不确定,选择该族6个代表种,对其触角感器的形态特征、类型变化和分布位置做了记述、分析比较,提供了扫描电镜照片;基于14个触角特征的分析数据,构建了该族3个属和6个种可能的系统发育树。属间关系:沟芫菁属Hycleus+(伪斑芫菁Pseudabris+苹斑芫菁Mylabris);种间关系:(眼斑沟芫菁H.cichorii+大斑沟芫菁指名亚种H.phaleratus)+((长角伪斑芫菁P.hingstoni+长腹伪斑芫菁P.longiventris)+(苹斑芫菁M.calida+丽斑芫菁M.speciosa))。     

A NEW CHINESE RECORD GENUS AND ONE NEW RECORD SPECIES OF MELOIDAE FROM CHINA (COLEOPTERA, TENEBRIONOIDEA)

记述芫菁科Meloidae 中国1新纪录属,异角芫菁属Rhampholyssa,以及中国1新纪录种,斯氏异角芫菁Rhampholyssa steveni (Fischer von Waldheim.1823).该属的主要鉴别特征是:触角8 节,♂性第3～5节极为特化,背面观颊几乎不可见;♂额具发达纵隆脊并由侧面可见.提供了斯氏异角芫菁形态描述、生物学、寄主及形态特征图.研究标本保存在河北大学博物馆.     

细纹豆芫菁和大斑芫菁的性行为

本文对细纹豆芫菁EpicautamannerheimiM kl和大斑芫菁MylabrisphalerataPallas的求偶和交配过程进行了描述。列举了芫菁亚科 5族 1 3属 3 4种芫菁的性行为 ,并讨论了雄成虫在形态构造上对求偶和交配行为的适应性行为。     

芫菁科中国一新纪录属种(鞘翅目,拟步甲总科)

记述芫菁科Meloidae中国1新纪录属,异角芫菁属Rhampholyssa,以及中国1新纪录种,斯氏异角芫菁Rhampholys sasteveni(Fischervon Waldheim,1823)。该属的主要鉴别特征是:触角8节,♂性第3～5节极为特化,背面观颊几乎不可见;♂额具发达纵隆脊并由侧面可见。提供了斯氏异角芫菁形态描述、生物学、寄主及形态特征图。研究标本保存在河北大学博物馆。     

沙地沟芫菁指名亚种在中国首次发现(鞘翅目:芫菁科)

报道采自中国新疆的沟芫菁属1新记录亚种——沙地沟芫菁指名亚种Hycleus tekkensis tekkensis (Heyden,1883),提供其特征图、整体图及生境照片,并首次根据鞘翅斑纹将其分为4种类型.观察标本分别保存在河北大学博物馆和新疆大学昆虫标本室.     

红头芜菁触角感器形态描述(鞘翅目,芜菁科)

红头芫菁成虫群集性很强,常聚集在泡桐树中取食泡桐叶片,继而为害豆科等植物,其毒素斑蝥素在医学上有着重要的研究价值。本研究利用扫描电镜对红头芫菁雌雄成虫触角感器进行了观察,描述了触角感器的外部形态、类型和分布,并结合文献资料对其功能进行了讨论,试图解析其触角感器在寄主选择行为机制。     

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.