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1.
后唇科吸虫三新种(吸虫纲:复殖目)   总被引:1,自引:0,他引:1  
记述后唇科吸虫3新种,即东山后唇吸虫Opistholebesdongshanensis.sp.nov.东山异唇吸虫Heterolebesdongshanensis.nov.和兔头异唇吸虫Helterolebeslagocehpalisp.nov模式标本式采自福建省东山县沿的棕斑兔头TunLagoceophaluslunaris spadiceus肠道内。  相似文献   

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本文报道在湛江市附近海域海鸟体内获得的两种吸虫,经鉴定为新种,命名为巨口类茎吸虫,新种Microphalloides macrostonrs sp.nov.,珊瑚多黄吸虫,新种Multivitellus coralius sp.nov.  相似文献   

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中国凹盾象属六新种记述(鞘翅目:象虫科)   总被引:2,自引:0,他引:2  
本文记述产于我国的凹盾象属Stenoscelis昆虫6新种,分别为赤杨凹盾象Stenoscelis(Hexastenoscelis)alni sp.nov.,圆窝凹盾象S.foveatus sp.nov.,齿突凹盾象S.acerbus sp.nov.,小点凹盾象S.puncticulatus sp.nov.,洼喙凹盾象S.recavus sp.nov.,和蔚县凹盾象S.yuxianensis sp  相似文献   

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中国船甲螨属记述(蜱螨亚纲:甲螨亚目:卷边甲螨科)   总被引:1,自引:0,他引:1  
本文记述中国船甲螨属Scapheremaeus Berlese种类共6种,其中包括5新种:网纹船甲螨S.retestriatus sp.nov.,钩船甲螨S.uncinatus sp.nov.,四网船甲螨S.quarireticulatus sp.nov。,双突船甲螨.Sbituberculatus sp.nov.,指突船甲螨S.digitatus sp.nov和1个中国新纪录种子代船甲螨S.na  相似文献   

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本文是对广东滩涂经济鱼类寄生吸虫的和5篇研究报告。详细描述了独孤科Azygiidae Odhner,1911,前宫亚科Protermetrinae,前宫属Protermetra中发现的3新种,即鲒前宫吸虫P.sillagae sp.nov.,短尾前宫吸虫P.brachyura sp.nov.和瓣睾前宫吸虫P.lamellorchis sp.nov。并补充了独孤科的科,亚科,属的新特征。  相似文献   

6.
本文记述小毛瓢虫属Scymnus Kugelann小瓢虫亚属Scymnus(Pullus)Mulsant三新种:枝角小瓢虫Scymnus(Pullus)cladocerussp.nov,鞭丝小瓢虫Scymnus(Pullus)mastigoides sp.nov.,肾斑小瓢虫Scymnus(Pullus)nephrospilus sp.nov.。  相似文献   

7.
本文记述小毛瓢虫属ScymnusKugelann小瓢虫亚属Scymnus(Pullus)Mulsant三新种:枝角小瓢虫Ssymnus(Pullus)cladocerussp.nov.,鞭丝小瓢虫Scymnus(Pullus)mastigoidessp.nov.,肾斑小瓢虫Scymnus(Pullus)nephrospiulssp.nov.。  相似文献   

8.
河南叶县下寒武统辛集组单板类和腹足类化石的研究   总被引:8,自引:3,他引:5  
本文描述和讨论了河南叶县杨寺庄下寒武统辛集组单板类13种,腹足类2种,未定类1种。其中包括2新属6新种:Repenoconus xinjiensis gen.nov.,Scenella pycna sp.nov.,Securiconus vulgaris sp.nov.,Obtusocnus grossicostus sp.nov.,Igorellina proboscis sp.nov.,Gal  相似文献   

9.
福建海产鱼类寄生吸虫二新种(吸虫纲;复殖目)   总被引:7,自引:0,他引:7  
从福建沿海的横纹东方钝肠道里检获鳞肉科和血居科吸虫一新种,即等口双肛吸虫Bianium isostoma sp.nov。中华拟德氏吸虫Paradeontacylix sinensis sp.nov.新种与近似种进行比较,模式标本存放在汕头大学生物系。  相似文献   

10.
本文对广东滩涂经济鱼类寄生复殖吸虫独睾科MonorchiidaeOdhner,1911中的两新种分别进行详细的描述,其中细长椭囊吸虫Elliptobursaattenuatussp.nov作为拟原穴亚科PseudoproctotrematinaeElliptobursa属的新种,巨穴孤睾吸虫Lasiotocusmarotremasp.nov作为孤睾亚科LasiotocinaeLasiotocus属  相似文献   

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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.  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
肝癌中HBV和HCV基因和抗原的分布及意义   总被引:1,自引:0,他引:1  
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  相似文献   

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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.  相似文献   

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