Monitoring of resistance to the pyrethroid cypermethrin in Brazilian Aedes aegypti (Diptera: Culicidae) populations collected between 2001 and 2003
Monitoring of resistance to the pyrethroid cypermethrin in Brazilian Aedes aegypti (Diptera: Culicidae) populations collected between 2001 and 2003
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DOI：
10.1590/s0074-02762005000400017
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发表时间：
2005-07-01
期刊：
影响因子：
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通讯作者：
Valle, Denise
中科院分区：
文献类型：
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作者：
da-Cunha, Marcella Pereira;Lima, José Bento Pereira;Valle, Denise
不同的埃及伊蚊巴西人口，在两个连续的时期（2001年和2002年1 - 2003年），氯氰菊酯的抗性进行了监测，使用涂有杀虫剂的瓶子的生物测定。在方法中包括轻微的修改以区分死亡率和击倒效应。虽然这种拟除虫菊酯最近开始在该国用于控制登革热病媒，但在分析的两个时期之间注意到易感性下降，特别是在里约热内卢市。结果表明，耐药性至少部分是由于靶位点的改变。
Resistance to cypermethrin of different Aedes aegypti Brazilian populations, collected at two successive periods (2001 and 200212003), was monitored using the insecticide-coated bottles bioassay. Slight modifications were included in the method to discriminate between mortality and the knock down effect. Although this pyrethroid was recently started to be used in the country to control the dengue vector a decrease in susceptibility was noted between both periods analyzed, particularly in the city of Rio de Janeiro. The results indicate that resistance is due at least in part to a target site alteration.