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目的掌握山东省部分地区蚊虫种群密度变化情况和淡色库蚊对常用杀虫剂的抗药性水平,为蚊虫防制提供依据。方法采用诱蚊灯法监测蚊虫密度,幼虫浸渍法检测优势种群淡色库蚊对常用杀虫剂的抗药性水平。结果山东各地蚊虫全年密度呈现单峰曲线变化,高峰在8月,此时各种生境中以牲畜棚的蚊虫平均密度最高;所监测地区中优势种群均为淡色库蚊;所有地区淡色库蚊种群均对溴氰菊酯均产生低度抗药性,部分地区对双硫磷产生低度抗性;3个地区淡色库蚊种群对高效氯氰菊酯和氯菊酯基本无抗药性。结论探明了山东省部分地区蚊虫的种群密度和抗药性水平,在蚊虫的高峰期应加强对蚊虫的监测和控制措施的研究;针对蚊虫对常见化学杀虫剂产生抗药性的问题,应避免使用抗性较高的杀虫剂,优先考虑使用抗性相对较低的杀虫剂。
Objective To understand the population density changes of mosquitoes in some areas of Shandong Province and the resistance level of Culex pipiens pallens to commonly used insecticides to provide basis for mosquito control. Methods Mosquito lamp method was used to monitor mosquito density, and larvae dipping method was used to test the resistance level of dominant species Culex pipiens pallens to commonly used insecticides. Results The annual density of mosquitoes in Shandong showed a unimodal curve with the highest peak in August. At this time, the average density of mosquitoes in livestock sheds was the highest in all habitats. Culex pipiens pallens were dominant in all monitored areas. Culex pipiens pallens All populations showed low resistance to deltamethrin and low resistance to diphtheria in some areas. The population of Culex pipiens pallens in three areas showed no resistance to beta-cypermethrin and permethrin. Conclusion The population density and drug resistance of mosquitoes in some areas of Shandong Province have been ascertained. At the peak of mosquitoes, the surveillance and control measures of mosquitoes should be strengthened. In order to avoid the insecticide resistance of mosquitoes to common chemical pesticides, Use highly resistant pesticides, giving priority to the use of relatively less resistant pesticides.