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1.
本文以20%除虫脲(即灭幼脲Ⅰ号)胶悬剂在广东省番禺县大岗镇地区进行防治蚊幼虫试验.结果表明,根据蚊种及其孽生地类型可施用0.1—1.0ppm的浓度,对白纹伊蚊、致倦库蚊和骚扰阿蚊幼虫都有比较好的效果,而且持效也比较长.经过每15—20天喷洒一次,防治面积共564m2,基本上控制了蚊虫的发生数量.通过诱蚊箱的监测,7—9月份处理区各月份的成蚊密度均比对照区低.在使用剂量的范围内,除虫脲对鲩鱼、鳙鱼、食蚊鱼和蝌蚪安全.其杀虫作用是抑制幼虫的生长发育和变态.  相似文献   

2.
目的研制蚊虫叮咬止痒消炎剂,观察应用该蚊虫叮咬止痒消炎剂对吉林洮南地区背点伊蚊和刺扰伊蚊叮咬后的治愈效果。方法药品制备采用渗漉法和超声波提取法,质量控制依据中华人民共和国国家标准《一次性使用卫生用品卫生标准》GB 15979-2002,效果观察采用局部外用涂抹法。结果该止痒消炎剂12、24和48 h平均痊愈率分别为24.30%、55.14%和17.76%,总有效率为97.20%。结论该蚊虫叮咬止痒消炎剂符合中华人民共和国国家标准《一次性使用卫生用品卫生标准》GB 15979-2002的规定,对吉林洮南地区优势蚊种叮咬后具有明显的治愈效果,适用于部队野外执行任务携带。  相似文献   

3.
镶嵌式防治对抗性演化影响的论证   总被引:3,自引:2,他引:3       下载免费PDF全文
唐振华  张朝远 《昆虫学报》1993,36(2):185-189
为了评估镶嵌式防冶对抗性演化的影响,我们以淡色库蚊(Culex pipiens pallens)作为模型昆虫,用抗马拉硫磷(单因子)品系(RM)和抗氰戊菊酯(多因子)品系(RF)构成抗性个体频率均为0.1的一个“什成群体”(M品系),然后在F1代分成三个亚品系。Rmf亚品系用马拉硫磷和氰戊菊酯作镶嵌式模拟处理,并与单用马拉硫磷(Rm)和氰戊菊酯(Rf)逐代处理的亚品系作比较。处理10代后,Rm和Rmf对马拉硫磷的抗性分别是M晶系的266.4和6.1倍,而Rf和Rmf在处理5代后,对氰戊菊酯;山抗性均已达243.3倍。漠拟结果表明:(1)以杀虫饥理不同的杀虫剂进行镶嵌式防冶,在一定的条件下能延缓抗性的发展;(2)对单因子遗传,内马拉硫磷特别有效,而对多因子遗传的氰戊菊酯效果不佳。此外,还讨论了抗性治理的策略。  相似文献   

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蚊虫抗药性分子机理   总被引:5,自引:0,他引:5  
崔峰  乔传令 《昆虫知识》2007,44(5):621-626
蚊虫由于特殊的行为、生理及与人类生活密切相关,从而成为人类许多疾病的媒介,如疟疾、登革热、日本脑炎、丝虫病等,大多由库蚊Culex、伊蚊Aedes或按蚊Anopheles传播。世界上每年大量的化学杀虫剂用于农业和公共卫生,直接或间接给蚊虫带来选择压力而引发抗性。抗性机制基本可以分为两大类:代谢抗性(如非特异性羧酸酯酶,P450单加氧酶,谷胱甘肽S-转移酶的扩增)和靶标抗性(如乙酰胆碱酯酶、GABA受体和电压门控钠离子通道的突变)。文章对这些机理的研究进展进行综述。  相似文献   

6.
豚草防治措施综合评价   总被引:3,自引:0,他引:3  
运用层次分析法对豚草生物防治、化学防治和不实施任何防治措施的空白对照进行综合评价.对3种防治措施的综合效益和综合成本进行计算和排序,作为选择豚草防治措施的准则.结果表明:豚草生物防治所获得的综合效益最高,综合成本最低;空白对照的综合效益最低,综合成本最高;化学防治的综合效益和综合成本居中.豚草生物防治效益成本比最高,说明其是一种最为理想的防治措施,值得推广应用.  相似文献   

7.
陆宝麟 《昆虫学报》1978,(2):217-232
防蚊灭蚊是防治或消灭蚊媒病的重要环节之一。从四十年代起,由于滴滴涕、六六六等一些高效杀虫剂的广泛应用以及杀虫剂使用方法和杀虫器械的改进进,蚊虫防治有了很大的发展,在蚊媒病的防治上起了重大作用。例如有些地区,采用滴滴涕、六六六以及其他杀虫剂作室内滞留喷洒,消灭或控制了疟疾的发生。于是在国外,化学  相似文献   

8.
余静  李春晓  赵彤言 《昆虫知识》2008,45(2):194-198
自育是指成蚊不经吸血就能产卵的现象,它是蚊虫适应环境的结果。阐明自育机理和激发机理对蚊媒病的控制有积极意义。文章从自育概念、影响蚊虫自育的遗传因子、营养因子、激素因子、环境因子等方面作了综述,以期为蚊虫自育相关研究提供基础资料。  相似文献   

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桔小实蝇综合防治技术的初步研究   总被引:12,自引:3,他引:12  
有关桔小实蝇Bactrocera(Bactrocera)dorsalis(Hendel)种群控制技术的研究,国外有不少成功防治的实例。而在国内,南方的桔小实蝇发生地区,尽管农业防治、化学防治和物理防治等方面,均做了大量研究工作,但因作物种类多,土地分散种植,很难做到隔离措施,不育蝇释放  相似文献   

11.
    
Global warming has shortened mosquitoes’ lifecycle period and increased the disease transmission rates by mosquito vectors. We reviewed only three mosquito‐borne diseases: malaria, dengue fever, and the Japanese encephalitis. Billions of people get infected with those diseases and millions of people die every year. Although we struggle to find the most effective way to control mosquitoes using various methods (including pesticides), mosquito‐borne diseases are still among the most serious problems being faced. This paper, therefore, reviews the strategies for controlling mosquitoes. The use of pesticides to control mosquitoes might have more negative effects on humans and environments than benefits. Although the development of genetically modified (GM) mosquitoes raises new hopes for effective mosquito control, it will take longer to assess the risks to humans and environments. Furthermore, there has been concern about the possible adverse effects from the release of GM mosquitoes into the environment. The various mosquito traps may not be as effective at controlling only female mosquito populations. Therefore, new strategies for the control of mosquitoes are vital. The smart mosquito counter device was developed by Korean Centre for Disease Control (KCDC) in 2013. The mosquito pest control office is able to set up the appropriate mosquito control strategies by using quantitative mosquito information. The smart device will bring mosquito control in line with modern smart generation technology and the device will also soon be able to identify different mosquito species. This new strategy will change the methods of mosquito control and will provide beneficial effects toward sustainable nature and human health.  相似文献   

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A novel rotator trap was evaluated to determine the diel activity patterns and physiological state of adult female mosquitoes in St. Augustine, FL, U.S.A. Culex nigripalpus were most active from 19:00‐21:00, followed by 1:00‐3:00, based on collections from the novel rotator trap. Furthermore, analysis of the physiological state of female mosquitoes collected by the novel rotator trap suggested that non‐parous (nulliparous) host‐seeking mosquitoes were more frequently active in the 21:00‐23:00 and 09:00‐19:00 time frames. Parous host‐seeking mosquitoes were more frequently collected from 19:00‐21:00 and 1:00‐3:00. A low abundance of gravid females was collected by the rotator trap, so analysis of their activity periods was inconclusive. These results indicate that the novel rotated trap could be used to detect the diel activity patterns of adult mosquitoes in mosquito control programs and more testing should be conducted in the future.  相似文献   

15.
我国12种蚊幼虫上颚形态和鉴别特征的研究   总被引:1,自引:0,他引:1  
本文对8种库蚊和按蚊、伊蚊、阿蚊及杵蚊各属代表种的4龄幼虫上颚进行扫描电镜观察.概述了上颚的外部形态,并提出了各蚊种的鉴别特征.指出幼虫上颚具有显著的种间差异,具有重要的分类学意义,讨论了上颚的结构与功能的关系.通过对上颚结构和取食方式的比较研究,从生物学角度,提出蚊科进化关系.  相似文献   

16.
A selective medium containing a combination of starch, milk proteins, and streptomycin was used as a reliable indicator for the presence of Bacillus sphaericus in soil samples collected from a mosquito habitat where this pathogen was previously applied. The medium can also be used as an indicator substrate to retrieve B. sphaericus from infected mosquito larvae. Results show that B. sphaericus remains viable and infective 9 months after application as a larvacidal agent of mosquitoes in a roadside ditch.  相似文献   

17.
    
Personal protection measures against biting arthropods include topical insect repellents, area repellents, insecticide‐treated bednets and treated clothing. The literature on the effectiveness of personal protection products against arthropods is mainly limited to studies of prevention of bites, rather than prevention of disease. Tungiasis was successfully controlled by application of topical repellents and scrub typhus was reduced through the use of treated clothing. Successful reduction of leishmaniasis was achieved through the use of topical repellents, treated bednets and treated clothing in individual studies. Malaria has been reduced by the use of insecticide‐treated bednets (ITN), certain campaigns involving topical repellents, and the combination of treated bednets and topical repellents. Although area repellents such as mosquito coils are used extensively, their ability to protect humans from vector‐transmitted pathogens has not been proven. Taken together, the literature indicates that personal protection measures must be used correctly to be effective. A study that showed successful control of malaria by combining treated bednets and topical repellents suggests that combinations of personal protection measures are likely to be more effective than single methods. Implementation of successful programmes based on personal protection will require a level of cooperation commonly associated with other basic societal functions, such as education and food safety.  相似文献   

18.
    
We evaluated the oviposition response of gravid Aedes albopictus (Skuse) to six organic infusions. Laboratory and field‐placed oviposition cups baited with water oak (Quercus nigra L.), longleaf pine (Pinus palustris P. Mill), or St. Augustine grass (Stenotaphrum secundatum (Walt.) Kuntze), as well as binary infusion mixtures of each, were used. In addition, a triple‐cage, dual port olfactometer was used to measure upwind response of gravid individuals to these infusions. We found that Ae. albopictus deposited more eggs in infusion‐baited cups compared with water alone. Moreover, significantly more eggs were laid in the water oak and a water oak‐pine mixture as compared with the St. Augustine grass infusion in laboratory bioassays. However, a negative upwind response was observed with longleaf pine infusion in the olfactometer. In field cages, significantly more eggs were deposited in infusion‐baited cups as compared with water alone and a greater percentage of eggs were deposited in cups containing a water oak and the water oak‐longleaf pine mixture as compared with cups containing single infusions or their mixtures.  相似文献   

19.
本文阐述了植物源驱蚊物质的主要活性成分、具有驱蚊作用的植物种类;讨论了植物源驱蚊剂的开发现状、存在问题及影响驱蚊效果的因素;提出了未来驱蚊剂的研究热点和方向。  相似文献   

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Lowering food consumption by larvae has been shown to (1) prolong the duration of development in Aedes aegypti, (2) increase the time elapsed between emergence of males and females, (3) produce smaller mosquitoes with a reduced lipid content per milligram of body weight, and (4) bring about a significant decrease in the percentage composition of 18:0 and 18:2 fatty acids.  相似文献   

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