Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Fisiologia e Controle de Artrópodes Vetores, Rio de Janeiro, RJ, Brasil.
Prefeitura da Cidade do Rio de Janeiro, Secretaria Municipal de Saúde, Rio de Janeiro, RJ, Brasil.
Mem Inst Oswaldo Cruz. 2020 Oct 30;115:e200271. doi: 10.1590/0074-02760200271. eCollection 2020.
Aedes aegypti is the primary transmitter of several arbovirus with great impact in human health. Controlling vector mosquitoes is an essential and complex task. One promising control method is to use mosquitoes as a vehicle to disseminate tiny particles of juvenile-killing insecticides, such as pyriproxyfen (PPF), to breeding sites.
We aimed to investigate the capacity of Ae. aegypti to disseminate two new formulations of PPF in two sites of Rio de Janeiro city for assessment of the efficacy of these products.
Dissemination stations impregnated with powder and liquid new formulations of PPF were installed in two test sites. Ovitraps were used in the test sites and in a control site for monitoring the presence of Ae. aegypti throughout eggs collection.
Entomological indices indicated that the new formulations of PPF were efficient in reducing eggs abundance. Liquid formulation performed better than powder formulation. Ready-to-use formulations of PPF can be quickly applied in the field and can be replaced after a few months.
New formulations of PPF associated with mosquito dissemination approach make a valuable vector control strategy, managing to cover places of difficult access for whatever reason. New formulations application requires less labour, being economically attractive.
埃及伊蚊是几种虫媒病毒的主要传播媒介，对人类健康有重大影响。控制病媒蚊是一项重要而复杂的任务。一种很有前途的控制方法是利用蚊子作为载体，将微小的杀幼虫剂颗粒（如吡丙醚）传播到繁殖地。
我们旨在调查埃及伊蚊在里约热内卢市的两个地点传播两种新吡丙醚制剂的能力，以评估这些产品的效果。
在两个试验点安装了浸渍有粉末和液体新制剂的传播站。在试验点和对照点使用诱卵器监测整个卵收集期间埃及伊蚊的存在情况。
昆虫学指数表明，新的吡丙醚制剂能有效降低卵的丰度。液体制剂比粉末制剂效果更好。吡丙醚的即用型制剂可快速应用于现场，每隔几个月可更换一次。
吡丙醚新制剂与蚊子传播方法相结合，成为一种有价值的病媒控制策略，能够覆盖因任何原因难以到达的地方。新制剂的应用需要较少的劳动力，具有经济吸引力。
