中国双羽爪瘿螨属二新种记述(蜱螨亚纲: 羽爪瘿螨科)

记述羽爪瘿螨科2个新种忍冬双羽爪瘿螨Diptacus lonicerae sp.nov.,寄主为忍冬;山莓双羽爪瘿螨Diptacus rubi     

双羽爪瘿螨属二新种记述（蜱螨亚纲：大嘴瘿螨科）

本文的二个新种是樱桃双羽爪瘿螨Diptacus pseudocerasis sp.nov.和三角枫双羽爪瘿螨Diptacus aceris sp.nov.它们均营自由生活,分别寄生于樱桃Prunus pseudocerasus和三角枫Acer buergerianus     

中国羽扑瘿螨属二新种记述（蜱螨亚纲：羽爪瘿螨科）

记述羽扑瘿螨科2个新种：忍冬双羽扑瘿螨Diptacus lonicerae sp.nov.，寄主为忍冬；山莓双羽扑瘿螨Diptacus rubi sp.nov.，寄主为山莓。     

羽毛瘿螨科3新种记述（蜱螨亚纲：羽爪瘿螨科）

记述羽爪瘿螨科3个新种：扁担杆鼻植羽瘿植Rhinophytoptus grewiae sp.nov.,寄主为扁担杆;喜树蜡皮瘿螨Apodiptacus comptothecae sp.nov.,寄主为喜树：竹无毛双羽瘿螨Asetadiptacus indosasae sp.nov.,寄主为大节竹。     

中国陕西双羽爪瘿螨属二新种(瘿螨总科,羽爪瘿螨科,羽爪瘿螨亚科)

记述在陕西发现的双羽爪瘿螨属2新种:短毛双羽爪瘿螨 Diptacus brevichaetus sp.nov.,寄主是山胡椒Lindera glauca(Sieb.et Zucc.)Bl.(樟科Lauraceae);商州双羽爪瘿螨Diptacus shangzhous sp.nov.,寄主是樱桃Cerasus pseudocerasus (Lindl.)G.Don(蔷薇科Rosaceae).模式标本保存在安康学院农学与生命科学学院.短毛双羽爪瘿螨,新种Diptacus brevichaetus sp.nov.(图1～6)正模♀;副模:7♀♀,5♂♂,2008-07-24,陕西省商南县(33°31′N,110°53′E;海拔780m),金丝峡、谢满超采.寄主为山胡椒Lindera glauca(Sieb.et Zucc.)Bl.(樟科Lauraceae).新种与黄肉楠双羽爪瘿螨Diptacus actinodaphne Wang et Wei,2009相似,但新种背盾板饰有网格;足Ⅰ基节间光滑;生殖盖片基部饰有颗粒,端部饰有12短线予以区别(黄肉楠双羽爪瘿螨D.actinodaphne背盾板饰有不规则短线;足Ⅰ基节饰有线条;雌生殖盖片饰有8～10条纵肋).商州双羽爪瘿螨,新种Diptacus shangzhous sp.nov.(图7～12)正模♀;副模:9♀♀,7 ♂ ♂,2008-08-26,陕西省商州市(33°47′N,109°40′E;海拔870 m),秦王山、谢满超采.寄主为樱桃Cerasus pseudocerasus(Lindl.)G.Don(蔷薇科Rosaceae).新种与樱桃双羽爪瘿螨Diptacus pseudocerasis Kuang et Hong,1990相似,但新种具前叶突;足Ⅰ基节分离,无胸线;基节饰有颗粒和少量短线;雌生殖器盖片基部饰有颗粒,端部光滑予以区别(樱桃双羽爪瘿螨D.pseudocerasis无前叶突;足Ⅰ基节间具胸线,基节光滑;雌生殖器盖片光滑).     

羽爪瘿螨亚科二新种记述蜱螨亚纲：羽爪瘿螨科)

羽爪瘿螨亚科二新种记述（蜱螨亚纲：羽爪瘿螨科）韦绥概,匡海源（广西农业大学南宁５３０００５）（南京农业大学南京２１ＺＺ９５）本文记述我国羽爪瘦螨科,羽爪瘿螨亚科Ｄｉｐｔｉｌｏｎｄｏｐｉｎａｅ的二个新种。所用量度单位为ｍ。正模和配模标本保存在南京农业大...     

中国广西大瑶山瘿螨新属和新种（蜱螨亚纲：瘿螨总科）

记述采自广西的瘿螨总科10属10新种。新属二环顶背瘿螨属Tegosecanus gen. nov. 的主要属鉴别特征为：螨体为纺锤形,胛毛位于盾后缘之前,螨体背环光滑,腹环具微瘤,背环具中纵脊,终止于2侧脊之前,第2背环宽,覆盖于其后的二背环之上,第3–4背环具侧突。10新种分别是：油杉三毛瘿螨Trisetacus fortunei sp. nov.;桂林雕瘿螨Glyptacus kweilinensus sp. nov.;腺叶桂樱新拟尖叶瘿螨Neoacaphyllisa phaeosticta sp. nov.;山黄麻尖空瘿螨Oxycenus tomentosae sp. nov.;拟赤杨小叶剌瘿螨Phyllocoptacus fortuneir sp. nov.;金秀二环顶背瘿螨Tegosecans jinxiuensis sp. nov.;古柯上瘿螨Epitrimerus sinensis sp. nov.;润楠叶剌瘿螨Phyllocoptes glaucifoliae sp. nov.;山麻风羽爪瘿螨Diptilomiopus pomiferae sp. nov.;卫矛维氏瘿螨Vimola laxifloris sp. nov. 上述所有瘿螨新种均生活在寄主叶片背面,无明显为害状。     

中国南方大嘴瘿螨亚科二新种(蜱螨亚纲,瘿螨总科,羽爪瘿螨科)

记述了大嘴瘿螨属2新种:广西大嘴瘿螨Rhyncaphytoptus guangxiensis sp.nov.和冯氏大嘴瘿螨Rhyncaphytoptus fengi sp.nov.,采自广西田林县利周乡岑王老山.度量单位为μm.模式标本保存在广西大学农学院昆虫标本室.     

中国蜡梅上的瘿螨二新种(蜱螨亚纲,瘿螨总科)

记述寄生在蜡梅Chimonanthus praecox(Linn.)Link.(蜡梅科Calycanthaceae)叶子上的瘿螨2新种:蜡梅离子瘿螨Leipothrix chimonae sp.nov.和蜡梅双羽爪瘿螨Diptacus praecoxsp.nov.。模式标本保存在河北大学博物馆。蜡梅离子瘿螨,新种Leipothrix chimonae sp.nov.(图1～5)正模♀,副模:25♀♀,2♂♂,2009-06-01,陕西省岚皋县蜡烛村,海拔600m,谢满超采。寄主为蜡梅Chimonanthuspraecox(Linn.)Link.(蜡梅科Calycanthaceae)。新种与悬钩子离子瘿螨Leipothrix yipingae Shi,2000相似,但新种背盾板具背中线,雌生殖盖片基部具纵线,端部饰有斜线,羽状爪3支,而悬钩子离子瘿螨L.yipingae背盾板上无背中线,雌生殖盖片饰有短线和粒点,羽状爪4支。蜡梅双羽爪瘿螨,新种Diptacus praecox sp.nov.(图6～12)正模♀,副模:8♀♀,7♂♂,2009-06-01,陕西省岚皋县蜡烛村,海拔600m,谢满超采。寄主为蜡梅Chimonanthuspraecox(Linn.)Link.(蜡梅科Calycanthaceae)。新种与臭樱双羽爪瘿螨Diptacus maddenis Song,Xue etHong,2007相似,但新种足Ⅰ基节间具胸线,基节饰有线条和粒点,雌生殖器盖片上饰有1排纵肋,而臭樱双羽爪瘿螨D.maddenis足Ⅰ基节间无胸线,基节饰有粒点,雌生殖器盖片基部饰有粒点。     

秦巴山区竹子上的瘿螨三新种记述(蜱螨亚纲,瘿螨总科,瘿螨科)

记述了采自陕西秦巴山区竹子上的瘿螨科3新种:纹股新波羽瘿螨Neocymoptus ornapodus sp.nov.,寄主慈竹Neosinocalamus affinis (Rendle) Keng;刚竹背槽瘿螨Aculochetus phyllostacher sp.nov.,寄主刚竹属Phyllostachys sp.;尖嘴四瘿螨Tetra spicrostrae sp.nov.,寄主刚竹属Phyllostachys sp..     

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.