共查询到17条相似文献，搜索用时 93 毫秒
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本文是中国虱齿属分类研究系列第二部分,主要介绍了虱齿属分类研究中的常用方法以及本属昆虫的重要分类特征。 相似文献
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本文是“中国虱Ｃｈｉ属分类研究”系列论文的第３篇，主要介绍了齿目分目，粉齿亚目分级等５个齿目和虱龋属研究中常用检索表。 相似文献
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本文是“中国虱齿属分类研究”系列论文的第５篇，首先对世界仓储虱齿常见种小眼虱齿Ｌｉｐｏｓｃｅｌｉｓ ｐａｅｔａ Ｐｅａｒｍａｎ进行了重新描述，并给出了５种常见虱齿检索表；其次对中国虱齿属已知种进行了总结；最后初步探讨了虱齿属研究在植物检疫标准化建设中的地位和意义。 相似文献
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本文是“中国虱齿属分类研究”系列论文的第４篇，主要针对４种世界常见虱齿属Ｌｉｐｏｓｃｅｌｉｓ昆虫进行了重新描述，即嗜卷虱齿Ｌ．ｂｏｓｔｒｙｃｈｏｐｈｉｌａ Ｂａｄｏｎｎｅｌ、嗜虫虱瞪Ｌ．ｅｎｔｏｍｏｐｈｉｌａ （Ｅｎｄｅｒｌｅｉｎ）、无色虱齿Ｌ．ｄｅｃｏｌｏｒ（Ｐｅａｒｍａｎ）和皮氏虱齿Ｌ．ｐｅａｒｍａｎｉ ｌｉｅｎｈａｒｄ。旨大为我国口岸植物检疫，特别是有关虱齿有关虫的鉴定工作提供参考。 相似文献
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本研究应用形态分类学、模糊数学与计算机相结合的分类方法对中国环总科线虫的主要属种进行了系统的分类研究。 相似文献
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除危害各种储藏物 ,虱属昆虫也可随活体植物、木材、木质包装、废纸、土壤等进行远距离传播。为便于口岸检疫人员及时、准确鉴定所截获的虱属昆虫 ,本文记述了该属 2种中国新记录 ,即鲍氏虱liposcelisbouilloniBadonnel和地虱L .edaphicaLienhard ,并对其进行了再描述 相似文献
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BACKGROUND: Psocids are emerging pests in stored products, particularly in amylaceous commodities such as grains. Currently, their control is based on the use of fumigants and contact insecticides; however, newer data indicate that psocids are tolerant to insecticides used to control other stored‐grain species. This study evaluated the insecticides registered in the USA for use on stored maize, rice and wheat for control of the psocid species Lepinotus reticulatus, Liposcelis entomophila, L. bostrychophila and L. paeta. Mortality of exposed adult females was recorded after 7 and 14 days of exposure, while progeny production was assessed after 30 days of exposure. RESULTS: On wheat and rice, chlorpyriphos‐methyl + deltamethrin was generally more effective against exposed parental adults than spinosad or pyrethrin, while pirimiphos‐methyl was more effective on maize than spinosad or pyrethrin. In most cases, progeny production was suppressed in the treated grains. Progeny production was consistently lowest on wheat and rice treated with chlorpyriphos‐methyl + deltamethrin and maize treated with pirimiphos‐methyl. CONCLUSIONS: Chlorpyriphos‐methyl + deltamethrin and pirimiphos‐methyl were the most effective insecticides for all species and commodities. Conversely, efficacy of spinosad or pyrethrum was highly dependent on the psocid species and commodity. Published in 2009 by John Wiley & Sons, Ltd. 相似文献
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嗜卷书虱和嗜虫书虱酯酶性质的比较研究 总被引：2，自引：1，他引：2
对嗜卷书虱Liposcelis bostrychophila和嗜虫书虱L. entomophila羧酸酯酶及乙酰胆碱酯酶(AChE)的生物化学性质进行了初步研究。结果表明:嗜虫书虱的羧酸酯酶活性明显高于嗜卷书虱,嗜卷书虱和嗜虫书虱羧酸酯酶对底物α-NA的Km值分别为0.665 7、0.285 7 mmol/L,Vmax值分别为1.672 2和2.463 1 mmol·(mg·30 min)-1。嗜卷书虱和嗜虫书虱乙酰胆碱酯酶的活性差异不显著,嗜虫书虱略高于嗜卷书虱。通过聚丙烯酰胺凝胶电泳,检测出8条嗜卷书虱、7条嗜虫书虱酯酶同工酶谱带,嗜卷书虱的酶谱分布比嗜虫书虱广。 相似文献
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嗜卷书虱Liposcelis bostrychophila Badonnel是一种发生在储粮环境中的重要害虫，其抗性问题十分突出。在实验室条件下，采用高CO2（35％CO2、21％O2、44％N2）、低O2＋高CO2（35％C02、1％O2、64％N2）、DDVP和PH3等4种不同的处理，对嗜卷书虱连续处理20代，每代处理2次，每次处理保持对成虫死亡率35％的选择压力，得到了4个不同的抗性品系HCO2-R、HCLO-R、DDVP-R和PH3-R，抗性指数分别为3．3、5．2、10．2和4．5。经过对抗性发展趋势的分析，嗜卷书虱对这几种环境胁迫都有一定的抗性潜力。对抗性品系的现实遗传力（h^2）进行分析，其h^2分别为0．388、0．155、0．341和0．594。抗性风险评估结果表明，分别采用高CO2低O2＋高CO2、DDVP和PH，处理，在50％的选择压力下，抗性增加10倍所需的代数分别为62．30、44．17、26．46和38．48代；而在90％的选择压力下，抗性增加lO倍所需的代数分别为28．1l、20．08、11．98和17．39代。因此对于采用气调处理，嗜卷书虱对低O2＋高CO2处理的抗性风险比用高CO2处理大，而采用药剂处理，嗜卷书虱对DDVP的抗性风险要比PH3处理大。 相似文献
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BACKGROUND: The psocid Liposcelis bostrychophila Badonnel, is a widespread, significant pest of stored commodities, has developed strong resistance to phosphine, the major grain disinfestant. The aim was to develop effective fumigation protocols to control this resistant pest. RESULTS: Time to population extinction of all life stages (TPE) in days was evaluated at a series of phosphine concentrations and temperatures at two relative humidities. Regression analysis showed that temperature, concentration and relative humidity all contributed significantly to describing TPE (P<0.001, R(2)=0.95), with temperature being the dominant variable, accounting for 74.4% of the variation. Irrespective of phosphine concentration, TPE was longer at lower temperatures and high humidity (70% RH) and shorter at higher temperatures and low humidity (55% RH). At any concentration of phosphine, a combination of higher temperature and lower humidity provides the shortest fumigation period to control resistant L. bostrychophila. For example, 19 and 11 days of fumigation are required at 15 degrees C and 70% RH at 0.1 and 1.0 mg L(-1) of phosphine respectively, whereas only 4 and 2 days are required at 35 degrees C and 55% RH for the same respective concentrations. CONCLUSIONS: The developed fumigation protocols will provide industry with flexibility in application of phosphine. 相似文献