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中国毛绥螨属一新种及一新纪录种(蜱螨亚纲:裂胸螨科) 总被引:3,自引:1,他引:2
本文忆述毛绥螨属一新种,三叉毛绥螨Lasioseius trifurcipilus sp.nov.和一新纪录种,肛毛绥螨Lasioseius analis Evans,1958,它们分别采自贵州的黑线姬鼠和云南的大绒鼠体上,后种的雄螨尚属首次发现。对我国已知的10种毛绥螨编制了检索表。 相似文献
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本文记述毛绥螨属一新种,三叉毛绥螨Lasioseiustrifurcipilussp.nov.和一新纪录种,肛毛绥螨LasioseiusanalisEvans,1958,它们分别采自贵州的黑线姬鼠和云南的大绒鼠体上,后种的雄螨尚属首次发现。对我国已知的10种毛绥螨编制了检索表。 相似文献
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本文民述囊螨科Ascidae毛绥螨属Lasioseius Berlese,1916的1新种-中国毛绥螨Lasioseius sinensis sp.n。及中国2新记录种-细孔毛绥螨L.porulosus De Leon与茸毛绥螨L.lasiodactyli Ishikawa。新种模式标本保存于沈阳农业大学植物保护系。 相似文献
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宁夏毛绥螨属一新种:蜱螨亚纲:囊螨科 总被引:2,自引:0,他引:2
本文记述采自宁夏角川市郊柳树寄生多孔菌体上的毛绥螨属1新种-殷氏毛绥螨Lasioseius yini,sp.nou。,模式标本保存在宁夏回族自治区地方病防治所和沈阳农业大学。 相似文献
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记述手绥螨属3新种:长岭手绥螨Cheiroseius changlingensis sp.nov.,宽沟手绥螨Cheiroseius capacoperitrematus sp.nov.和狭沟手绥螨Cheiroseius angustiperitrematus sp.nov.,并补充洮手绥螨Cheiroseius taoanensis Ma.1996雌螨特征及描述后若螨。 相似文献
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曲美绥螨雄螨和洮儿河美绥螨前若螨描述(蜱螨亚纲:革螨股:美绥螨科) 总被引:3,自引:0,他引:3
描述曲美绥螨Ameroseius curvatus Gu.Wang et Bai,1989雄螨和洮儿河美绥螨Ameroseius taoerhensis,Ma,1995前若螨。 相似文献
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吉林省美绥螨属2新种(蜱螨亚纲:美绥螨科) 总被引:3,自引:1,他引:2
报道美绥螨属2新种:崔氏美绥螨Ameroseiuscuiqishengisp.nov和洮儿河美绥螨Ameroseiustaoerhensissp.nov采自吉林省白城的腐烂树皮下。 相似文献
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记述手绥螨属一新种,即圆肛手绥螨Cheiroseius cyclanalis Ma,sp.nov.。 相似文献
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美绥螨科一新属新种记述(蜱螨亚纲:革螨股) 总被引:1,自引:0,他引:1
本文记述美绥螨科Ameroseiidae一新属、新种,叶华绥螨Sinoseius lobatus Bai etGu,gen.et sp.nov.,其主要形态特征无法归入美绥螨科诸属中,故建立华绥螨属,新属Sinoseius Bai et Gu,gen.nov.,模式标本采自宁夏海原县的长尾仓鼠体上,保存于宁夏回族自治区地方病防治所。 相似文献
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浙江植绥螨科一新种及一新纪录(蜱螨亚纲:植绥螨科) 总被引:5,自引:0,他引:5
本文在我国浙江省余杭县竹子上采到的植绥螨科Phytoseiidae Berlese,1916植绥螨属Phytoseius Ribaga,1904一新种,余杭植绥螨Phytoseius yuhangensis sp.nov.和盲走螨属Typhlodromus Scheuten,1858中国1新纪录,竹盲走螨Typhlodromus bambusae Ehara,1964。文内对新种进行描记和绘图。模 相似文献
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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. 相似文献
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
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
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
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
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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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H.-R. GREGORIUS 《Biological journal of the Linnean Society. Linnean Society of London》1984,23(2-3):157-165
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
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