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Variable coverage in an Autocidal Gravid Ovitrap intervention impacts efficacy of Aedes aegypti control
Journal of Applied Ecology ( IF 5.0 ) Pub Date : 2021-06-17 , DOI: 10.1111/1365-2664.13951 Jose G Juarez 1 , Luis F Chaves 2 , Selene M Garcia-Luna 1 , Estelle Martin 1 , Ismael Badillo-Vargas 1 , Matthew C I Medeiros 3 , Gabriel L Hamer 1
中文翻译：
自杀妊娠诱产卵器干预中的可变覆盖范围影响埃及伊蚊控制的效果
更新日期：2021-06-17
Journal of Applied Ecology ( IF 5.0 ) Pub Date : 2021-06-17 , DOI: 10.1111/1365-2664.13951 Jose G Juarez 1 , Luis F Chaves 2 , Selene M Garcia-Luna 1 , Estelle Martin 1 , Ismael Badillo-Vargas 1 , Matthew C I Medeiros 3 , Gabriel L Hamer 1
Affiliation
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- Control of the arboviral disease vector Aedes aegypti has shown variable levels of efficacy around the globe. We evaluated an Autocidal Gravid Ovitrap (AGO) intervention as a stand-alone control tool for population suppression of A. aegypti in US communities bordering Mexico.
- We conducted a cluster randomized crossover trial with weekly mosquito surveillance of sentinel households from July 2017 to December 2018. The intervention took place from August to December of both years. Multilevel models (generalized linear and additive mixed models) were used to analyse the changes in population abundance of female A. aegypti.
- We observed that female populations were being suppressed 77% (2018) and four times lower outdoor female abundance when AGO coverage (number of intervention AGO traps that surrounded a sentinel home) was high (2.7 AGOs/house). However, we also observed that areas with low intervention AGO coverage resulted in no difference (2017) or slightly higher abundance compared to the control. These results suggest that coverage rate might play a critical role on how populations of female A. aegypti are being modulated in the field. The lack of larval source habitat reduction and the short duration of the intervention period might have limited the A. aegypti population suppression observed in this study.
- Synthesis and applications. The mosquito, A. aegypti, is a public health concern in most tropical and subtropical regions. With the rise of insecticide resistance, the evaluation of non-chemical tools has become pivotal in the fight against arboviral disease transmission. Our study shows that the AGO intervention, as a stand-alone control tool, is limited by its coverage in human settlements. Vector control programmes should consider, that if the target coverage rate is not achieved, measures will be ineffective unless coupled with other control approaches. Although our multilevel modelling was focused on A. aegypti and the AGO, the approach can be applied to other mosquito vector species.
中文翻译：
自杀妊娠诱产卵器干预中的可变覆盖范围影响埃及伊蚊控制的效果
对虫媒病毒疾病媒介埃及伊蚊的控制在全球范围内显示出不同程度的功效。我们评估了自杀妊娠产卵器 (AGO) 干预措施作为抑制A种群的独立控制工具。与墨西哥接壤的美国社区中存在埃及伊蚊。
我们进行了一项整群随机交叉试验，从 2017 年 7 月到 2018 年 12 月，每周对哨点家庭进行蚊子监测。干预时间是这两年的 8 月到 12 月。采用多水平模型（广义线性和加性混合模型）分析雌性A种群丰度的变化。埃及伊蚊。
我们观察到，当 AGO 覆盖率（围绕哨兵之家的干预 AGO 陷阱数量）较高（2.7 个 AGO/房屋）时，女性种群被抑制了 77%（2018 年），户外女性数量降低了四倍。然而，我们还观察到，与对照相比，干预 AGO 覆盖率较低的区域没有差异（2017 年）或稍高的丰度。这些结果表明覆盖率可能对雌性A种群的影响发挥关键作用。埃及伊蚊正在现场进行调制。幼虫来源栖息地减少的缺乏和干预期的持续时间短可能限制了A .本研究中观察到埃及伊蚊种群受到抑制。
合成与应用。蚊子， A .埃及伊蚊是大多数热带和亚热带地区的公共卫生问题。随着杀虫剂耐药性的上升，对非化学工具的评估已成为对抗虫媒病毒疾病传播的关键。我们的研究表明，AGO 干预作为一种独立的控制工具，因其对人类住区的覆盖范围而受到限制。病媒控制计划应考虑到，如果未达到目标覆盖率，除非与其他控制方法相结合，否则措施将无效。尽管我们的多级建模主要集中在A上。埃及伊蚊和 AGO，该方法可应用于其他蚊媒物种。
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