欧洲球螋的检疫

北京出入境检验检疫局从美国进境旅客携带的石榴中检出欧洲球螋。了解欧洲球螋的基本特性,能为相关部门对其检疫鉴定提供参考依据。对欧洲球螋的相关文献进行了查阅和整理,详细介绍了欧洲球螋的分类地位、分布、形态特征及近似种等信息,我国出入境检验检疫部门对球螋属的截获情况,讨论了欧洲球螋的检疫意义。认为欧洲球螋在我国无分布且具有一定的入侵风险,口岸应对该虫引起足够的重视。     

云南丝尾螋属一新种(革翅目:丝尾螋科)

记述采自云南省丝尾螋属l新种：六库丝尾螋Diplatys liukuensis,sp．nov．。模式标本保存于浙江自然博物馆。     

黄足肥螋的饲养方法

黄足肥螋 Euborellia pallipes Shliraki属革翅目肥螋科 ,在云南分布较广 ,在蔗田内普遍发现 ,是甘蔗象鼻虫 [1]、螟虫和粉蚧壳虫等的重要天敌。成虫体长 8～ 1 3mm,体形扁平 ,黄褐色 ,有光泽 ;头前口式 ,活动自如 ;前翅短小、革质 ,末端平截 ,尾须坚硬 ,铗状 ,不分节。性两型明显 ,雄虫尾铗大而弯 ,雌虫尾铗短而直。渐变态。卵阔卵形 ,白色。若虫与成虫相似 ,尾铗较简单。雌虫有护卵育幼习性。该虫为夜行性 ,白天则潜伏在土缝内及石块、树皮、甘蔗老叶鞘下。 1年 1代。现将其室内饲养方法介绍如下。1　饲养工具罐头玻璃瓶 :高 1 3cm,口径 …     

黄足肥螋的发生及其对苹果绵蚜的捕食作用

本文对黄足肥螋Euborellia pallipes（Shiraki）的发生及其对苹果绵蚜Eriosoma lanigerum（Hausmann）的捕食作用开展了研究。结果表明：7～9月份是黄足肥螋田间发生高峰期,它对苹果绵蚜E．lanigerum（Hausmann）的功能反应符合HollingⅡ,Na=0．9804N／（1＋0．0108N）,其捕食量随苹果绵蚜密度的增加而增加,日最大捕食量和最佳寻找密度可达46．3头和19．9头。在15～30℃下,黄足肥螋的捕食量随温度的升高而增加,每头成虫在10、15℃、18℃、20℃、25℃和30℃下的取食量分别为3．3头、20．3头、23．8头、25．8头和27．0头。研究表明了黄足肥螋是苹果绵蚜的主要捕食性天敌昆虫之一,应加强保护与利用。     

椰心叶甲天敌垫跗螋的生物学研究

垫跗螋Chelisoches morio (Fabricius)是入侵害虫椰心叶甲Brontispa longissima (Gestro)的一种本地天敌.为了了解垫跗螋的生物学习性和控害潜能,本文对垫跗螋的形态特征、生长发育、重要生物学习性以及对椰心叶甲的捕食选择性和捕食量进行了观察研究.垫跗螋雌成虫将产的卵堆积在一起,抱孵在体下,且不时用口器翻动重排卵,受到惊扰时会吃掉卵,甚至初孵的若虫.在室温条件下(20±2)℃,以椰心叶甲2龄幼虫为食料,垫跗螋从卵至成虫的平均发育历期为(107.9±15.2)d;平均每头雌虫产卵量为(138.7±59.5)粒;垫跗螋成虫对椰心叶甲2龄幼虫的日平均捕食量为(6.7±1.1)头.寄主龄期选择性实验表明,垫跗螋成虫和4龄若虫喜欢取食椰心叶甲的2龄幼虫;3龄和2龄若虫喜欢取食椰心叶甲的1龄幼虫.     

贵州省革翅目昆虫纪要

本文根据中国科学院动物研究所和北京农业大学昆虫标本室的标本,记录贵州省的革翅目昆虫3科16属29种,其中包括1个中国新记录属和1个新异名。     

内蒙古自治区上侏罗统最原始的蠼螋昆虫化石(昆虫纲:革翅目:始螋亚目)

我国上侏罗统牛津阶-基末利阶（163-150Ma)保存有完好的最原始的蠼螋昆虫化石,首次描述,分析和讨论了原始蠼螋后翅脉序特征,认为与现代生存的蠼螋后翅基本相同。因此,提出了与西方某些蠼螋昆虫分类学者不同的意见,认为始螋亚目（Aechidermaptera)应归入于革翅目（Dermaptera)之中,且视其为一个最原始的类群较为合理,内蒙古自治区这个原始类群的下列重要特征皆为首次发现;胸骨具有特殊的形态结构;革翅锁具（Tegmina locking device)和刺脊突（spiny crest)发育;前,中,后足跗节皆为5节;后足基节显著伸长;颈部被划分为前,后两个颈片;革翅后缘收缩变尖,上述5项被视为厚原始蠼螋特有的祖征,下列特征应为早期蠼螋共有的原始性状;虫体扁平,通常具毛;腹部侧缘彼此近平行;触角显长,丝状,多节（通常多于11节）;两只单眼发育;上颚具齿;中胸小盾片显大;革翅较长,通常具有明显的翅脉;股节具隆脊;爪和爪垫通常发育;腹部各节背板与腹板不重叠（两者位置非简单的上,下关系）;尾须柔软,多节,雌性产卵器鞘显著外伸,本文建立了始螋亚目1新科Sinopalaeo-dermatidae和2新属2新种Sinopalaeodermata neimonggolensis gen.et sp.nov,Jurassimedeola orientalis gen,et sp.nov。同时,对蠼螋昆虫的起源和演化重新进行了讨论,做出了与西方某些蠼螋昆虫研究者结论不同的推断。     

灰足肥螋的初步观察

<正> 灰足蠼螋Euborellia pallipes Shiraki是鄂东地区分布比较广的一种捕食性天敌,据调查山区、丘陵、平原均有分布。 生物学特性 此虫在鄂东地区一年发生1—2代,以成虫、若虫在田埂、乱石、砖瓦堆内、树根际以及屋角墙基土下越冬。翌年3—4月开始出土活动。每年以夏、秋两季活动最盛,成虫寿命长达半年至一年以上。成虫交配产卵多在夏、秋两季,但     

中国张球螋属的研究及一新种记述(革翅目：球螋科)

中国张球螋属的研究及一新种记述（革翅目：球螋科）张晓春,杨集昆（中国科学院动物研究所,北京１０００８０）（北京农业大学,北京１０００９４）张球嫂属（Ａ。ｅｃｈ。ｒａＳｃｕｄｄｅｒ）是张球嫂亚科（Ａｎｅｃｈｕｒｉｎａｅ）的主要组成部分,共知ＺＩ种,分布...     

浙江丝尾螋属一新种(革翅目:大尾螋科)

凤阳丝尾螋Diplatys fenpyangensis新种 雄性:体细长,深红褐色,被密的黄褐色短柔毛和稀疏的褐色粗毛。唇基淡黄色,额缝缺乏,冠缝明显,短,额突起、眼中等大,稍突出,颊稍长于眼。触角约20节,第1节粗和长,约等于第3与第4节之和,第2节很短。前胸背板长稍大于宽,前胸沟前片肿起,沟后片平,中央纵沟明显。覆翅淡褐色,正常,翅和足正常。腹部细长,呈     

A homozygous female hemophilia A

BACKGROUND:

Hemophilia A (HA), being an X-linked recessive disorder, females are rarely affected, although they can be carriers.

AIMS:

To study the mutation in F8 gene in an extended family with a homozygous female HA.

MATERIALS AND METHODS:

All the seven affected members (six males and one female) were initially screened by Conformation Sensitive Gel Electrophoresis (CSGE) and direct DNA sequencing.

RESULTS:

A homozygous missense mutation c.1315G>A (p.Gly420Ser) was identified in exon 9 of F8 gene in homozygous state in the affected female born of 1° consanguinous marriage and in all the affected male members of the family. Her factor VIII levels was found to be 5.5%, vWF:Ag 120%.

CONCLUSION:

In India, as consanguineous marriages are very common in certain communities (up to 30%), the likelihood of encountering female hemophilia is higher, although this is the first case of HA out of 1600 hemophilia families registered in our Comprehensive Haemophilia Care Center. Genetic diagnosis in such cases is not necessary as all the male children will be affected and daughters obligatory carriers.     

A glucoside of urospermal A

The aerial parts of Urospermum picroides afforded, in addition to urospermal A a p-hydroxylphenyl acetate of a glucoside of urospermal A.     

Aminopeptidase A is angiotensinase A

Summary Quantitative histochemical measurements of aminopeptidase A (APA; E.C.3.4.11.7) were done kinetically in the kidney glomeruli of rat and mouse with an instrumental setup consisting of a microdensitometer and a computer-supported morphometric system. The histochemical demonstration of APA was carried out using the simultaneous azo coupling technique (purest-grade Fast Blue B as coupling agent and -l-glutamic acid-4-methoxy-2-naphthylamide as substrate). The methodological studies show that APA activity is calcium-ion-dependent and increases linearly with the thickness of the tissue section (3–12 m) and that the time-course of APA activity as determined by linear regression is linear only for the first 1 to 2 min of the reaction. — Kinetic measurements indicate a 40% decrease in APA activities when -l-glutamic acid-4-methoxy-2-naphthylamide (-l-Glu-MNA) is replaced by -l-aspartic acid-4-methoxy-2-naphthylamide. When -l-Glu-MNA is replaced with l-alanine-4-methoxy-2-naphthylamide, which is a substrate of aminopeptidase M (APM) only very low reaction rates are measurable (about 1.4% of those with -l-Glu-MNA). 100 and 130 mM NaCl in the incubation medium increase APA activities by approximately 16%–17%. — To clarify the functional importance of APA in the kidney, their activities were measured under the influence of angiotensins. The glomerulus was selected as the measuring site, for besides APA it contains no APM or other peptidases that could degrade angiotensins (the glomerular dipeptidyl peptidase IV is not inhibited by angiotensin II). Using the Lineweaver-Burk plot, we determined a K _m of 0.16 mM for the APA in rat glomeruli and 0.14 mM in mouse glomeruli. The V _max in mouse glomeruli is 1.6 times higher than in rat glomeruli. Ang iotensin I, II and III competitively inhibit APA in the rat and mouse glomeruli. — With quantitative histochemical techniques it was possible to show that APA is equivalent to angiotensinase A (splitting off the N-terminal aspartic acid from angiotensin I and II).Supported by the Deutsche Forschungsgemeinschaft (SFB 105)     

Quadruplexes of human telomere DNA analogs designed to contain G:A:G:A,G:G:A:A,and A:A:A:A tetrads

Replacement of two to four guanines by adenines in the human telomere DNA repeat dG₃(TTAG₃)₃ did not hinder the formation of quadruplexes if the substitutions took place in the terminal tetrad bridged by the diagonal loop of the intramolecular antiparallel three‐tetrad scaffold, as proved by CD and PAGE in both Na⁺ and K⁺ solutions. Thermodynamic data showed that, in Na⁺ solution, the dG₃(TTAG₃)₃ quadruplex was destabilized, the least by the two G:A:G:A tetrads, the most by the G:G:A:A tetrad in which the adenosines replaced syn‐guanosines. In physiological K⁺ solution, the highest destabilization was caused by the 4A tetrad. In K⁺, only the unmodified dG₃(TTAG₃)₃ quadruplex rearranged into a K⁺‐dependent quadruplex form, none of the multiple adenine‐modified structures did so. This may imply biological consequences for nonrepaired A‐for‐G mutations. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 880–886, 2010.