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本文描述产于云南的白蚁科2新种:章凤马歪白蚁Malaysiocapritermes zhangfengersis sp.n.、江城瘤歪白蚁Mirocapritermes jiangchengersis sp.n。在读者讨论中,作者等认为,李桂祥等描述的中国马歪白蚁M.sinicus Li et Xiao应转移入华歪白蚁属Sinocapritermes Ping et Xu,新组合为中国华歪白蚁Si 相似文献
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用扫描电镜观察了3种木白蚁(平阳堆砂白蚁Cryptotermespingyangensis、叶额堆砂白蚁C.havilandi和侧角楹白蚁Incisitermes laterangularis)和2种草白蚁(东方原白蚁Hodotermopsisorientalis和尤氏原白蚁H.yui)的翅面微刻点。微刻点类型有:乳突:基部宽5.0—20.6μm,长3.0-17.7μm,翅面中央密度可达2070—3375乳突/mm2;瘤状突起:基部直径15.0—58.6μm,翅面中央密度282—356突起/mm2;粉刺状突起:基部直径2.4-4.8μn。此外,还发现有长11—57μm的毛。同种白蚁的前、后翅和翅的背、腹面之间,微刻点类型没有明显的差异。最后初步讨论了白蚁翅面微刻点的分类学和生物学意义。 相似文献
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本文记述了等翅目白蚁科两新种:浙江大白蚁Macrotermes zhejiangensis sp.nov.和小葫白蚁Cucurbitermes parviceps sp.nov.。标本均采自浙江省,正模保存于广东省昆虫研究所。 相似文献
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本文记述了云南散白蚁属Reticulitermes(Holmgren)和钩歪白蚁属PseudocapritermesKemner四新种: 1.江城散白蚁Reticulitermes(Frontotermes)jiangchengensis新种; 2.短头散白蚁Peticulitermes(Planifrontotermes)curticeps新种; 3.平颠钩歪白蚁Pseudocapritermes Planimentus新种; 4.江城钩歪白蚁Pseudocapritermes jiangchengensis新种。 相似文献
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毒死蜱对家白蚁毒杀作用的时间与剂量效应 总被引:2,自引:0,他引:2
用含不同毒死蜱浓度的毒土对家白蚁(Coptoternes foumosamus Shiraki)进行了生物测定,浓度范围为0.015-0.48mg/kg。观察2周。实验观察发现土壤中毒死蜱浓度为0.48-0.06mg/kg时,白蚁接触毒土出现的死亡高峰为4小时至2天;在0.03mg/kg时,死亡高峰在1周以后;而浓度为0.015mg/kg时,2周内仍观察不到白蚁死亡。所获的生物测定数据很好地拟合时 相似文献
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我国已知大白蚁属18种,其中仅1种属于大,中,小(兵蚁,工蚁)三态类型,由李桂祥,平正明定名为三型大白蚁。作者等于1994年,在云南省南亚热带地区,发现另一三态类型大白蚁,定名为箕头大白蚁新种。 相似文献
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湘潭市是湖南省白蚁危害地区之一。通过调查,我市发现白蚁近40种,造成直接经济损失500多万元,现就近几年在白蚁防治方面所做的研究整理如下。1白蚁防治调查1.1不同药剂诱杀家白蚁的防治效果用白蚁喜食的材料做成诱杀箱,埋放在白蚁经常出没的地方,待诱集到一定数量的白蚁后,用灭蚁灵粉剂或砒粉剂喷杀,其防治效果见表1。1.2不同药剂防治散白蚁的防治效果用氯丹、溴氰菊酯、砷铜合剂全面喷洒蚁害活动区,或用灭蚁灵剂喷入分飞孔内及对危害区域多点喷施,其防治效果见表2。1.3不同药剂防治土栖白蚁的防治效果用氯丹、溴… 相似文献
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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. 相似文献
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T R Varma 《BMJ (Clinical research ed.)》1987,294(6581):1230-1231
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Julia D. Harrison 《American anthropologist》2000,102(1):159-160
Oka: Behind the Barricades. 1998. 312 minutes. For more information contact the National Film Board of Canada, 3155 Côte de Lisse Rd., St. Laurent, Quebec H4N 2N4. Series of four videos:
Kanehsatake: 270 Years of Resistance. 1993. 120 minutes. Directed by Alanis Obomsawin .
Spudwrench: Kahnawake Man. 1997. 58 minutes. Directed by Alanis Obomsawin .
My Name is Kahentiiosta. 1995. 30 minutes. Directed by Alanis Obomsawin .
Acts of Defiance. 1992. 104 minutes. Directed by Alec MacLeod . 相似文献
Kanehsatake: 270 Years of Resistance. 1993. 120 minutes. Directed by Alanis Obomsawin .
Spudwrench: Kahnawake Man. 1997. 58 minutes. Directed by Alanis Obomsawin .
My Name is Kahentiiosta. 1995. 30 minutes. Directed by Alanis Obomsawin .
Acts of Defiance. 1992. 104 minutes. Directed by Alec MacLeod . 相似文献
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R Smith 《BMJ (Clinical research ed.)》1987,294(6573):702-703