伊朗东南部疟疾流行区库蚊（双翅目：蚊科）对不同杀成虫剂的当前易感性状况
Current Susceptibility Status of (Diptera: Culicidae) to Different Imagicides in a Malarious Area, Southeastern of Iran.
作者信息
Gorouhi Mohammad Amin, Vatandoost Hassan, Oshaghi Mohammad Ali, Raeisi Ahmad, Enayati Ahmad Ali, Mirhendi Hossein, Hanafi-Bojd Ahmad Ali, Abai Mohammad Reza, Salim-Abadi Yaser, Rafi Fatemeh
机构信息
Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
National Malaria Control Department, CDC, Ministry of Health and Medical Education, Iran.
出版信息
J Arthropod Borne Dis. 2016 Oct 4;10(4):493-500. eCollection 2016 Dec.
BACKGROUND
mosquitoes are an important group of arthropods due to their role in transmission of malaria. The present study was conducted for determination of susceptibility status of to different imagicides collected from malarious area in Chabahar city, Iran.
METHODS
In the present study seven insecticides including: DDT 4%, lambdacyhalothrin 0.05%, deltamethrin 0.05%, permethrin 0.75%, cyfluthrin 0.15% and etofenprox 0.5% were tested based on WHO method. Regression line was plotted for each insecticide using mortality of different exposure times. Bioassay data were analyzed using Probit software and the lethal time for 50% and 90% mortality (LT and LT) values were calculated.
RESULTS
The susceptibility levels of field strain of to the discriminative dose of different imagicides were determined 100, 98, 96, 89, 82 and 62% for etofenprox, permethrin, deltamethrin, lambdacyhalothrin, cyfluthrin and DDT, respectively. Our finding indicated that is resistant to DDT, lambdacyhalothrin and cyfluthrin, and susceptible to etofenprox and permethrin and candidate of resistant to deltamethrin based on WHO criteria.
CONCLUSION
Our findings indicated that is resistant to DDT and some pyrethroid insecticides which can be developed due to application of insecticides in health and agriculture. These results can provide a clue for future chemical control program in the study area.
背景
蚊子是节肢动物的一个重要类群，因为它们在疟疾传播中发挥作用。本研究旨在测定伊朗恰巴哈尔市疟疾流行地区采集的不同杀虫剂对[蚊子种类未明确]的敏感性状况。
方法
在本研究中，依据世界卫生组织的方法，对七种杀虫剂进行了测试，包括：4%滴滴涕、0.05%高效氯氟氰菊酯、0.05%溴氰菊酯、0.75%氯菊酯、0.15%氟氯氰菊酯和0.5%醚菊酯。利用不同暴露时间的死亡率为每种杀虫剂绘制回归线。使用Probit软件分析生物测定数据，并计算50%和90%死亡率的致死时间（LT50和LT90）值。
结果
[蚊子种类未明确]野外品系对不同杀虫剂鉴别剂量的敏感性水平分别为：醚菊酯100%、氯菊酯98%、溴氰菊酯96%、高效氯氟氰菊酯89%、氟氯氰菊酯82%和滴滴涕62%。我们的研究结果表明，根据世界卫生组织的标准，[蚊子种类未明确]对滴滴涕、高效氯氟氰菊酯和氟氯氰菊酯具有抗性，对醚菊酯和氯菊酯敏感，对溴氰菊酯有抗性候选性。
结论
我们的研究结果表明，[蚊子种类未明确]对滴滴涕和一些拟除虫菊酯类杀虫剂具有抗性，这可能是由于在卫生和农业领域使用杀虫剂所致。这些结果可为研究区域未来的化学防治计划提供线索。
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