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In addition,the rapid development of resistance to chemical insecticide by psocids has also been reported.In China,the commonly occurred psocid species are Liposcelis bostrychophila,L.entomophila,L.decolor,and L.paeta.
在我国发生为害最为严重的种类有嗜卷书虱Liposcelis bostrychophila、嗜虫书虱L.entomophila、无色书虱L.decolor以及小眼书虱L.paeta等。
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The 16S rRNA sequences of the bacterial endosymbionts from five geographic populations of two psocid species, Liposcelis bostrychophila and L. decolor was analyzed.
采用特异性引物PCR扩增、克隆和测序获得嗜卷书虱和无色书虱共5个地理种群体内共生菌16S rRNA基因序列。
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The 6 AChE Genes from L.bostrychophila,L.entomophila and L.decolor were demarcated into Insect TypeⅠAChE Gene and Insect TypeⅡAChE Gene.4 Gene cloning of nAChR and mRNA expression level in L.bostrychophilaTwo nicotinic acetylcholine receptor subunit genes,Lb al and Lb a8,were cloned from the psocid L.bostrychophila.The full length cDNAs of Lb a1(GenBank Accession No.: EU871527) and Lb a8GenBank Accession No.
昆虫的两类AChE严格的区分,其中Ⅰ型AChE先与脊椎动物AChE聚合后才与Ⅱ型AChE相聚,说明两类AChE基因在物种分化前就已经分化。4嗜卷书虱烟碱型乙酰胆碱受体基因克隆及其mRNA表达水平研究利用RT-PCR和RACE技术成功克隆获得了嗜卷书虱2个烟碱型乙酰胆碱受体亚基的全长序列,分别命名为Lb a1(GenBank登录号:EU871527)和Lb a8(GenBank登录号:EU871526)。
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The results was as follow : Under the influence of the different condition on the temperature and the relative humidity, the life cycle of L.
方差分析的结果表明,各种温度和湿度组合条件下,嗜卷书虱生活周期差异极显著(P.01)。本研究中,嗜卷书虱的发育最适条件为35℃±1℃,88%±2%RH,此时完成一个世代约为22天。
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Homology modeling of 3-D structure of two AChE from L.entomophila were constructed using H.sapiens(1p0i:A) native BuChE structure and Drosophila melanogaster(1d×4:A) native AChE structure as templates,respectively,by SWISS-MODEL.The catalytic triad were found and denoted in the 3-D structure of AChE from L. entomophila referring to T.californica.2.2 Gene cloning ofβ-actin and mRNA expression levels of two AChE genes from L. entomophilaBecause no reference gene has ever been used in Real Time PCR for L.entomophila in GeneBank,a fragment ofβ-actin gene was cloned from L.entomophila(GenBank Accession No.: FJ041117).It consists of 822 bp encoding a protein of 273 amino acids residues.
利用蛋白质结构同源建模工具,分别以人丁酰胆碱酯酶(1p0i:A)和果蝇乙酰胆碱酯酶(1d×4:A)的蛋白晶体结构为模板,对嗜虫书虱2个AChE的三维结构进行同源建模,并在三维结构中发现了AChE的酶解活性位点,证明嗜虫书虱体内也存在2个AChE基因。2.2嗜虫书虱β-actin基因克隆及乙酰胆碱酯酶基因mRNA表达水平研究目前关于嗜虫书虱的分子生物学研究较少,在GenBank中没有可用作内参基因的序列,因此本研究从嗜虫书虱体内克隆获得β—actin基因片段(GenBank登录号:FJ041117),该片段长度为822 bp,编码273个氨基酸残基,同源性比对分析表明该片段与其它昆虫的β—actin基因具有很高的同源性。
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There were many adults and nymphae of psocids when the temperature over 15℃ and almost nil under 5~2℃.
在粮温15℃以上时,可以检测到较多的书虱成虫,当粮温降到5~2℃左右时,检测到的书虱密度几乎为0。
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The number of the adults and nymphae of psocids at the surface of the stored wheat was as many as that at the inner of stored wheat when the temperature was 15℃, the number of the psocids at the surface of the stored wheat would exceed the psocids number at the inner when the temperature exceed 20℃.
结果表明,嗜虫书虱在小麦堆的种群变化因粮温的上升而增大,并表现为15℃左右时粮堆表层和粮面下100cm处数量相近,粮温升达到22℃以上后,粮堆表层的书虱数量明显多于粮堆内部。
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There was a stable and relatively low expression level for Lbα1 and a progressive expression pattern for Lbα8 among the 1st,2nd,3rd,and 4th nymphal stages.5 Development and reproduction of L.decolor as a function of temperatureThe developmental rate,survival,intrinsic rate of increase,net reproductive rate(R_0),mean generation time,and population doubling time of L.decolor population were evaluated at eight constant temperatures.
Lb a1在1龄、2龄、3龄、4龄若虫及成虫中的表达水平分别是Lb a8的2.03、2.55、4.77、6.54、和5.28倍,且它们之间的差异均达到显著水平(P<0.05)。5温度对无色书虱发育和繁殖的影响通过比较无色书虱在不同温度条件下的发育速率、存活率、内禀增长率等生命参数以明确无色书虱在不同温度条件下的发生发展规律。
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In contrast,the expression levels of Lb est2 in nymphal stages are lower than that in adult stage.2 Gene cloning of AChE and mRNA expression level in L.entomophila2.1 Gene cloning and sequence analysis of AChE in L.entomophilaTwo full length cDNA encoding AChE were cloned from L.entomophila by the methods of RT-PCR and RACE,named Le ace1(GenBank Accession No.:EU854149) and Le ace2GenBank Accession No.
CarE基因在不同发育阶段mRNA表达量的分析结果表明,Lb est1的表达量随着该虫生长发育的进行逐渐降低,至成虫期时表达水平最低;相反,L6 est2在若虫期表达水平较低,而在成虫期表达水平最高。2嗜虫书虱乙酰胆碱酯酶基因克隆及其mRNA表达水平研究2.1嗜虫书虱乙酰胆碱酯酶基因克隆及序列分析利用RT-PCR和RACE技术成功克隆获得嗜虫书虱2个AChE基在的全长序列,分别命名为Le ace1(GenBank登录号:EU854149)和Le ace2(GenBank登录号:EU854150)。
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Psocids,belonging to Liposcelididae,Psocoptera,are worldwide and commonly found in various processed and unprocessed dry foods.Outbreaks of psocids could pose an alarming threat to stored product.Routine fumigations of warehouses and storage facilities with methyl bromide and PH_3 have failed to control these pests.
书虱属于虱啮目Psopotera、书虱科Liposcelididae、书虱属Liposcelis,是一类重要的储藏物害虫,大量发生时可造成严重的经济损失,而且对化学药剂的抗性发展很快,已经引起了全世界储藏物工作者的高度重视。
- 更多网络解释与书虱相关的网络解释 [注:此内容来源于网络,仅供参考]
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book louse:书虱
book loss 帐面损失 | book louse 书虱 | book lung 书肺
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Bdellidae:吸螨科
形昆虫(如书虱)等为食,肉食螨类如吸螨科(Bdellidae)、巨须螨科(Cunaxidae)、蒲螨科(Pymotidae)和肉食螨科Cheylitidae(已记录的有触足螨属(Chletomorpha)、单梳螨属Acaropsis、扇羽螨属Cheyletia和肉食螨属Cheyletus 4个属最有价值),
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booklouse:书虱
与书蟫或书蠹相比,"书虱"(booklouse)一词当属后起. 蝨(虱),"啮人虫也"(<<说文>>). 相传中的古代神箭手纪昌,他学射时用来练眼力和做箭靶的那只"悬虱",就应是"啮人虫",即吸血为生的寄生虫,按生物分类学,当属虱目;而喜欢啮食旧书籍的"书虱",