首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 55 毫秒
1.
The present paper reports thirty-three species of the genus Cryptolechia in China. Fifteen speciesare described as new to science: C. deflecta sp. nov. , C. kangxianensis sp. nov. , C. microbyrsa sp. nov. ,C.falsivespertina sp. nov., C.cornutivalvata sp. nov., C .fasciruptasp. nov., C. neargometra sp. nov., C.paranthaedeaga sp. nov., C.sp. nov., C. stictifascia sp. nov., C.jigongshanica sp. nov., C. mirabilis sp. nov., C. anthaedeaga sp. nov., C. gei sp. nov. and C. varifascirupta sp. nov. The genital structures of the new species are illustrated.  相似文献   

2.
The present paper reports fourteen species of the genus Cryptolechia from Guizhou Province, China. Eleven species are described as new: C. proximideflecta sp. nov., C. muscosa sp.nov., C. solifasciaria sp. nov., C. spinifera sp. nov., C. denticulata sp. nov., C. furcellata sp. nov.,C. latifascia sp. nov., C. acutiuscula sp. nov., C. fasciculifera sp. nov., C. hamatilis sp. nov. and C.concaviuscula sp. nov. The female of C. gei Wang is reported for the first time, and the genital structures of the new species are illustrated.  相似文献   

3.
首次详细描述了河南省石门沟、阳坡和山西省水峪等3条剖面寒武系底部辛集组中的遗迹化石。遗迹化石主要产出于辛集组的近底部层位,以水平管状遗迹化石为主,共计8遗迹属,12遗迹种(含3个未定种),包括Arenicolites sp.,Didymaulichnus lyelli,Gordia marina,Helminthopsis abeli,Helminthopsis sp.,Palaeophycus striatus,Palaeophycus tubularis,Phycodes sp.,Planolites beverleyensis,Planolites montanus,Treptichnus pedum与Treptichnus pollardi,此外还有2枚属种未定的遗迹化石。这一遗迹化石组合属非典型的Cruziana遗迹相,形成于盐度正常的潮下带砂质软底环境。通过对寒武纪早期管状遗迹化石Palaeophycus与Planolites直径大小的统计与分析,推测辛集组下部地层的时代不早于沧浪铺期。  相似文献   

4.
依据从2000年到2002年采自贵州赤水、习水以及梵净山等地的隐织蛾属Cryptolechia Zeller昆虫标本,研究报道了中国贵州的隐织蛾昆虫14种,包括11新种:拟弯带隐织蛾C.proximideflecta sp.nov.,苔隐织蛾C.muscosa sp.nov.,独带隐织蛾C.solifasciaria sp.nov.,棒隐织蛾C.spinifera sp.nov.,齿隐织蛾C.denticulata sp.nov.,叉隐织蛾C.furcellata sp.nov.,阔隐织蛾C.latifascia sp.nov.,尖隐织蛾C.acutiuscula sp.nov.,束隐织蛾C.fasciculifera sp.nov.,钩隐织蛾C.hamatilis sp.nov.和凹隐织蛾C.concaviuscula sp.nov.。首次报道了葛氏隐织蛾C.gei Wang的雌性个体。文中提供了新种的外生殖器特征图。模式标本保存在南开大学生物系。  相似文献   

5.
报道鞘蛾属壮鞘蛾组Coleophora strnipennella group 6新种:无棘壮鞘蛾C.acanthabortiva sp.nov.,党川壮鞘蛾C.dangchuanica sp.nov.,芽壮鞘蛾C.gemmiformis sp.nov.,巩留壮鞘蛾C.gongliuensis sp.nov,赭翅壮鞘蛾C ochroptera sp.nov.和直缘壮鞘蛾C.rectimarginalis sp nov..研究标本及模式标本保存在南开大学生物系.  相似文献   

6.
记述全世界弓背叶蝉属Cyrta Melichar昆虫10种,其中包括8个新种。编制了分种检索表,绘制了新种头、胸部及雄性外生殖器特征图。研究标本中,已知种金弓背叶蝉C.blattina Jacobi的正模标本保存于德国Zoologisches Forschungsinstitut und Museum Alexander Koening (ZFMK),Bonn,但标本标签为Staatliches Museum fuer Tierkunde,Dresden;新种逆毛弓背叶蝉C.recusetosa,sp.nov.模式标本保存于中国南开大学(NKU);具毛弓背叶蝉C.setosa,sp.nov.正模保存于西北农林科技大学昆虫博物馆(NWSUAF),副模保存于中国天津自然历史博物馆(TJNHM);版纳弓背叶蝉C.banna,sp.nov.、尖齿弓背叶蝉C.dentata,sp.nov.和异额弓背叶蝉C.parafrons,sp.nov.模式标本保存于中国科学院动物研究所(IZAS);异色弓背叶蝉C.bicolor,sp.nov.正模保存于中国科学院上海昆虫研究所(SHIE);长突弓背叶蝉C.longiloba,sp.nov.正模及1副模保存于中国科学院动物研究所(IZAS),1副模保存于天津自然历史博物馆(TJNHM);双斑弓背叶蝉C.bimaculata,sp.nov.正模及2副模保存于天津自然历史博物馆(TJNHM),1副模保存于英国Comm.Inst.Ent.(CIE)。  相似文献   

7.
This paper describes four new species of Coenosia Meigen, 1826, namely C. angustifolia sp.nov., C. obscuriabdominis sp. nov. C. sparagmocerca sp. nov. and C. sponsa sp.nov. Type specimens are deposited in Institute of Entomology, Shenyang Normal University, Shenyang, China.  相似文献   

8.
云南晋宁、安宁地区早寒武世蠕形动物及遗迹化石   总被引:8,自引:2,他引:6  
一、概述1978—1980年间,笔者在研究昆明地区震旦-寒武系界线剖面过程中,于晋宁王家湾渔户村组中谊村段及晋宁梅树村筇竹寺组玉案山段发现保存良好的蠕形动物化石Parasabellidites wangjiawanensis sp. nov., P. sp., Sabellidites yunnanensis sp.nov., S. badaowanensis sp.nov.等。另在安宁八街东北十里铺丫口,于沧浪铺组关山段下部砂岩上层面,发现个体较大,保存完好的遗迹化石Scolicia anningensis sp.nov.,Crossopodia sp.。这些化石的发现,不仅丰富了昆明  相似文献   

9.
本文记述金长足虻属Chrysosoma 5新种:大明山金长足虻C.damingshanum sp.nov.,指突金长足虻C.digitatum sp.nov.,长芒金长足虻C.longum sp.nov.,铜壁关金长足虻C.tongbiguanum sp. nov.,和周氏金长足虻C.zhoui sp. nov.。编制该属中国种类的检索表。  相似文献   

10.
王虎  吴玲玲  周立辉  胡妍妍  马小魁 《生态学报》2014,34(11):2907-2915
从陕北地区石油污染土壤中分离鉴定得到两株不动杆菌属(Acinetobacter sp.)的高效石油降解菌A.sp 1和A.sp 2,分别从盐浓度、pH值、氮源、磷源和接种量等因素进行研究以确定其最佳石油降解条件,并进一步通过GC-MS(Gas ChromatographyMass Spectrometer)方法分析其在最佳条件下对原油组分的不同降解性能。结果显示:A.sp 1在盐浓度为1%、pH值为6—7、磷源为KH2PO4和K2HPO4、氮源为尿素和接种量为4%的条件下,最高降解率可达到60%。A.sp 2在盐浓度为1%、pH值为7—9、磷源为KH2PO4和K2HPO4、氮源为硝酸铵和接种量为8%的条件下,最高降解率可达到67%。GC-MS分析结果表明,菌株A.sp 1对石油烃类C21—C25有明显的降解效果,菌株A.sp 2对石油烃类C20—C30的降解效果较好。  相似文献   

11.
12.
13.
14.
15.
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   

19.
20.
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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号