Aedes aegypti resistance to temephos during 2001 in several municipalities in the states of Rio de Janeiro, Sergipe, and Alagoas, Brazil
Aedes aegypti resistance to temephos during 2001 in several municipalities in the states of Rio de Janeiro, Sergipe, and Alagoas, Brazil
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DOI：
10.1590/s0074-02762004000200015
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发表时间：
2004-03-01
期刊：
影响因子：
--
通讯作者：
Valle, Denise
中科院分区：
文献类型：
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作者：
Braga, Ima Aparecida;Lima, José Bento Pereira;Valle, Denise
30多年来，双硫磷（一种有机磷杀虫剂）一直是巴西用于控制埃及伊蚊的唯一杀幼虫剂。自1999年起，有机磷酸酯也被拟除虫菊酯取代，用于控制成虫。同年，巴西卫生基金会开始协调Ae。埃及伊蚊杀虫剂抗药性监测项目。在这一规划的背景下，我们小组在2001年期间负责在巴西里约热内卢州（RJ）、阿拉戈斯州（AL）和塞尔吉佩州（SE）共12个市检测双硫磷耐药性。在每个城市，使用了从不同地区收集的蚊子池，但里约热内卢市除外，那里的8个地区已分别进行了评估。暴露于诊断剂量双硫磷的幼虫显示，在所检查的所有地区均出现抗药性，死亡率从4%（巴西巴西里约热内卢皮拉雷斯县）到61.9%（巴西巴西坎波斯多斯戈伊塔卡泽斯县）不等。死亡率量化显示抗性比从6.1（东南部阿拉卡朱）到16.8 （RJ的sdogonalo和巴西里约热内卢的Penha区）。国家登革热控制规划目前正在利用这些数据减少杀虫剂耐药性管理。
For more than 30 years temephos, an organophosphate insecticide, has been the sole larvicide used in Brazil in the control of Aedes aegypti. Organophosphates were also used for adult control, being replaced by pyrethroids since 1999. In this same year the Brazilian Health Foundation started the coordination of the Ae. aegypti Insecticide Resistance Monitoring Program. In the context of this program, our group was responsible for the detection of temephos resistance in a total of 12 municipalities in the states of Rio de Janeiro (RJ), Alagoas (AL), and Sergipe (SE) during 2001. In each municipality, a pool of mosquitoes collected from different districts was used, with the exception of Rio de Janeiro city, where eight districts have been separately evaluated. Exposure of larvae to the diagnostic dose of temephos revealed resistance in all localities examined, with mortality levels ranging from 4% (Pilares district, Rio de Janeiro, RJ) to 61.9% (Campos dos Goytacazes, RJ). Quantification of mortality showed resistance ratios from 6.1 (Aracaju, SE) to 16.8 (Sdo Gon alo, RJ and Penha district, Rio de Janeiro, RJ). The national dengue control program is presently using these data to subside insecticide resistance management.