Variations of insecticide residual bio-efficacy on different types of walls: results from a community-based trial in south Cameroon.
Variations of insecticide residual bio-efficacy on different types of walls: results from a community-based trial in south Cameroon.
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DOI：
10.1186/1475-2875-10-333
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发表时间：
2011-11-02
期刊：
影响因子：
3
通讯作者：
Awono-Ambene P
中科院分区：
文献类型：
--
作者：
Etang J;Nwane P;Mbida JA;Piameu M;Manga B;Souop D;Awono-Ambene P
杀虫剂残留活性的测定是选择适宜的室内喷洒作业的重要依据。本研究旨在评价三种候选杀虫剂制剂对不同室内表面的残留影响，以指导喀麦隆和其他非洲国家今后的干预措施。该研究在雅温得（喀麦隆首都）的恩图古社区进行。在当地水泥、木材和泥房的室内墙面上喷洒苯虫威WP、三氟氯氰菊酯CS和溴氰菊酯WG。从2009年3月至9月，使用世卫组织塑料锥试验，每月评估它们对冈比亚按蚊敏感品系基苏穆的击倒和死亡率的影响。使用卡方检验比较不同表面之间的击倒率和死亡率。Kaplan-Meir模型用于估计治疗失败的时间。除土墙上的击倒率在第13周显著下降外（P < 0.05），其余13周内击倒率均在98%以上。在26周的试验期间，用λ-氯氟氰菊酯CS在木材表面上的击倒率保持100%。而在混凝土表面和泥浆表面，从第11周（83%）和第20周（88%）开始，其表达量分别显著降低（P < 0.05）。对于溴氰菊酯WG，在26周内，其在混凝土表面上保持较高水平（> 98%）;而在木材或泥土表面上，其在60%至100%之间变化。恶虫威可湿性粉剂治疗仍然有效地杀死安的生存估计。冈比亚公司（死亡率≥ 80%）在水泥和木材表面上> 13周，在泥浆表面上为13周。氯氟氰菊酯CS在木材表面的降解时间大于26周，在水泥和泥土表面的降解时间为20周。相比之下，溴氰菊酯WG在混凝土上的时间为26周，在泥表面上为20周，在木材表面上为15周。目前的数据表明，根据墙面类型，每种产品的喷涂周期持续时间不同，这突出了在大规模使用之前在当地环境中测试候选产品的重要性。
Determination of residual activity of insecticides is essential information for the selection of appropriate indoor spraying operation. The present study was undertaken to evaluate the residual effect of three candidate insecticide formulations on different indoor surfaces in order to guide future interventions, in the context of Cameroon and other African countries. The study was conducted in the Ntougou neighbourhood in Yaoundé (capital city of Cameroon). Bendiocarb WP, lambda-cyhalothrin CS and deltamethrin WG were sprayed on the indoor wall surfaces of local cement, wood and mud houses. Their effects on the knockdown and mortality of the Kisumu susceptible strain of Anopheles gambiae s.s were assessed each month from March to September 2009, using the WHO plastic cones test. Knockdown and mortality rates were compared between different surfaces using Chi-square test. A Kaplan-Meir model was used to estimate the time of treatment failure. With bendiocarb WP, the knockdown rates were frequently above 98% during 13 weeks after spraying, except on mud walls where it significantly decreased at the 13th week (P < 0.05). With lambda cyhalothrin CS, the knockdown rates remained 100% on wood surfaces during the 26 weeks trial. However, it significantly decreased on concrete and mud surfaces from the 11th (83%) and the 20th (88%) weeks respectively (P < 0.05). With deltamethrin WG, it remained high on concrete surfaces during 26 weeks (> 98%); while it varied between 60 and 100% on wood or mud surfaces. The survival estimates of bendiocarb WP treatments remaining effective in killing An. gambiae s.s. (mortality rate ≥ 80%) was > 13 weeks on cement and wood surfaces and 13 weeks on mud surfaces. Those of lambda-cyhalothrin CS were > 26 weeks on wood surfaces, and 20 weeks on concrete and mud surfaces. By contrast, those of deltamethrin WG were 26 weeks on concrete, 20 weeks on mud surfaces and 15 weeks on wood surfaces. Current data suggest variable durations of spray cycles for each product, according to the type of wall surfaces, highlighting the importance of testing candidate products in local context before using them in large scale.
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影响因子：
3
作者：
Akogbeto, Martin C.;Padonou, Gil Germain;Yadouleton, Anges
通讯作者：
Yadouleton, Anges
DOI：
10.1016/j.trstmh.2009.03.003
发表时间：
2009-11-01
影响因子：
2.2
作者：
Matthews, G. A.;Dobson, H. M.;Birchmore, M.
通讯作者：
Birchmore, M.
影响因子：
3.3
作者：
Curtis, CF;Maxwell, CA;Njunwa, KJ
通讯作者：
Njunwa, KJ
影响因子：
2.1
作者：
Hougard, JM;Duchon, S;Guillet, P
通讯作者：
Guillet, P
影响因子：
3
作者：
Etang, J;Chandre, F;Manga, L
通讯作者：
Manga, L