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目的探讨分析区域家蝇抗药性变化水平。方法在相同的家蝇孳生地,采集成蝇,带回三门峡市疾病预防控制中心昆虫饲养室饲养,取F1代羽化后3~5 d的雌性成蝇,采用微量点滴法进行家蝇抗药性监测试验,用POLO软件对数据进行统计分析比较家蝇抗性变化水平。结果三门峡市区家蝇对拟除虫菊酯杀虫剂为高抗性水平,且呈上升的趋势;对敌敌畏为低抗水平。2011年与2006年结果相比,家蝇对敌敌畏的抗性水平下降了37.6%,对溴氰菊酯和高效氯氰菊酯的抗性分别增加了2.61和1.19倍。结论多领域、大剂量使用拟除虫菊酯杀虫剂是家蝇抗性水平逐年增加的主要因素之一。
Objective To investigate the changes of drug resistance in housefly in the area. Methods The same housefly breeding place was collected into adult flies, and the animals were housed in the insect breeding room of Sanmenxia Municipal Center for Disease Control and Prevention. The females were exposed to F1 generation for 3 ~ 5 days after emergence. The data were statistically analyzed by POLO software to compare the changes of housefly resistance. Results The housefly in Sanmenxia city was highly resistant to pyrethroid insecticides and showed a tendency of increasing. The level of dichlorvos was low. Compared with 2006 results, housefly resistance to dichlorvos decreased by 37.6% and resistance to deltamethrin and alpha-cypermethrin increased by 2.61 and 1.19 times, respectively. Conclusions Multi-field and high-dose pyrethroid insecticides are one of the main factors that increase the resistance level of housefly.