首页> 外文期刊>Journal of Medical Entomology >Behavioral responses of Aedes aegypti (Diptera: Culicidae) exposed to deltamethrin and possible implications for disease control.
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Behavioral responses of Aedes aegypti (Diptera: Culicidae) exposed to deltamethrin and possible implications for disease control.

机译:暴露于溴氰菊酯的埃及伊蚊(双翅目:葫芦科)的行为反应及其对疾病控制的潜在影响。

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摘要

Behavioural responses of nine Aedes aegypti strains, six from recent field collections and three from the long-established laboratory colonies, were tested under laboratory-controlled conditions by using an excito-repellency test system. All nine strains showed significant behavioural escape responses when exposed to deltamethrin at the standard field dose (0.02 g/m2), regardless of background insecticide susceptibility status (susceptible or tolerant/resistant). Insecticide contact irritancy played a predominate role in overall female mosquito escape responses, whereas noncontact repellency was not observed at levels significantly different from paired noncontact control tests (P>0.01). Among the six field populations, the Jakarta (Indonesia) Toba (north Sumatra), and Bangkok female mosquitoes showed rapid exit (>78%) during 30 minutes of direct contact with insecticide-treated surfaces, whereas the other three strains demonstrated only moderate escape responses (32-56%) from the chambers. Moderate escape responses during direct insecticidal contact also were observed in the three laboratory test populations (44-60%). Higher percentage of mortality was observed from laboratory strains (8-33%) that failed to escape compared with nonescape females of field strains (2-16%), possibly a reflection of background deltamethrin susceptibility status. It is concluded that contact irritancy is a major behavioural response of Ae. aegypti when exposed directly to deltamethrin and that rapid flight escape from areas exposed to space sprays or surfaces treated with residual pyrethroids could have a significant impact on the effectiveness of adult mosquito control and disease transmission reduction measures.
机译:使用兴奋剂驱避测试系统,在实验室控制的条件下测试了九种埃及伊蚊的行为反应,其中六种来自最近的田野收藏,三种来自历史悠久的实验室菌落。当以标准田间剂量(0.02 g / m2)暴露于溴氰菊酯时,所有九个菌株均表现出显着的行为逃避反应,而与本底杀虫剂易感性状况(易感或耐受/耐药)无关。杀虫剂接触刺激性在整个女性蚊子逃逸反应中起主要作用,而未观察到与配对非接触性对照试验显着不同的水平(P> 0.01)。在这六个田间种群中,雅加达(印度尼西亚)多巴(苏门答腊北部)和曼谷的雌性蚊子在与杀虫剂处理过的表面直接接触30分钟后迅速消失(> 78%),而其他三个菌株仅表现出中等程度的逸出商会的回应(32-56%)。在三个实验室测试人群(44-60%)中也观察到了直接杀虫接触过程中的中等逃逸反应。与未逃生的田间毒株(2-16%)相比,未能逃脱的实验室菌株(8-33%)观察到更高的死亡率,这可能是背景溴氰菊酯易感性的反映。结论是,接触性刺激是Ae的主要行为反应。 aegypti直接暴露于溴氰菊酯中,并且从暴露于空间喷雾或残留拟除虫菊酯处理的表面的快速逃逸可能会对成年蚊子控制和减少疾病传播措施的有效性产生重大影响。

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