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1.
本文报道血革螨属一新种,命名为狭背血革螨,新种Haemogamasusangustussp.nov.采自新疆乌苏,寄主为野兔。  相似文献   

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血革螨属一新种(蜱螨亚纲:血革螨亚科)   总被引:4,自引:3,他引:1  
本文记述采自云南下关市大绒鼠体上的血革螨属一新种,多齿血革螨Haemogamasus multidentis sp.nov.。模式标本保存在南京大学医学院寄生虫学教研室。  相似文献   

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中国血革螨科记述及一新属的建立:蜱螨亚纲:寄螨目   总被引:1,自引:0,他引:1  
本文对中国血革螨科进行整理,总共记录了53种和亚种,并建立了畸胸螨属Terasternagen.nov.,新属与中国血革螨亚科中唯一的血革螨属Haemogamasus相并列。  相似文献   

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血革螨属一新种:(蜱螨亚钢:厉螨科)   总被引:2,自引:1,他引:1  
本文记述采自云南剑川县大绒鼠巢中的血革螨属一新种,六毛血革螨Haemogamasus sexsetosus sp nov.,其背部刚毛呈三叉状,与多齿 革螨H.multidentis较相近,但肛板副毛6根,钳齿毛呈喇叭状,胸部副行全部光滑,殖腹板较宽大,可与后者相区别。  相似文献   

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血革螨属一新种(蜱螨亚纲:厉螨科)   总被引:3,自引:1,他引:2  
本文记述采自云南剑川县大绒鼠巢中的血革螨属一新种,六毛血革螨Haemogamasussexsetosussp.nov.,其背部刚毛呈三叉状,与多齿血革螨H.multidentis较相近,但肛板副毛6根,钳齿毛呈喇叭状,胸部副毛全部光滑,殖腹板较宽大,可与后者相区别。  相似文献   

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血革螨属一新种:寄螨目:血革螨科   总被引:2,自引:2,他引:0  
本文介绍了血革螨属一新种:贡山血革螨 Haemogamasus gongshanensis sp.nov.,它采自多齿鼩鼹 Nasillus gracilis Thomas 体上。该文对新种的形态特征作了详细描述,并与近似种云龙血革螨 Haemogamasus yunlongensis Gu et Fang进行了比较。  相似文献   

7.
新革螨属二新种记述:蜱螨亚纲:革螨股:寄螨科   总被引:2,自引:0,他引:2  
记述新革螨属2新种:异形新革螨Neogamasusanomalussp.nov.和皱形新革螨Neogamasuscrispussp.nov。  相似文献   

8.
田杰 《动物分类学报》1990,15(3):313-316
本文介绍了血革螨属一新种:顾氏血革螨Haemogamasus gui sp. nov., 它采自小林姬鼠四川亚种Apodemus syluaticus orestes Thomas体上。该文对新种的形态特征作了详细描述,并与近似种贡山血革螨Haemogamasus gongshanensis进行了比较。  相似文献   

9.
血革螨科二新种(蜱螨亚纲)   总被引:4,自引:2,他引:2  
田杰 《动物分类学报》1990,15(4):453-456
本文记述了血革螨科两新种:大理血革螨Haemogamasus daliensis sp.nov.和中华真厉螨Eulaelaps sinensis sp.nov.。该文对新种的形态特征作了描述,并与近似种进行了比较。  相似文献   

10.
刘井元  马立名 《昆虫学报》2002,45(Z1):118-120
 记述血革螨属Haemogamasus Berlese, 1889一新种,后凹血革螨H.postsinuatus sp. Nov.,采于湖北西北部神农架自然保护区的食虫目(Insectivora)。 另对鼯鼠真厉螨Eulaelaps petauristae Liu et Ma, 1998 雌性气门沟原始描述 进行更正。  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   

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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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