Assessing the efficacy of two new formulations of larvicide pyriproxyfen for the control of Aedes aegypti using dissemination stations in two sites of Rio de Janeiro city.

Autor:	Pinto RA; 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., Bauzer LGSDR; Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Fisiologia e Controle de Artrópodes Vetores, Rio de Janeiro, RJ, Brasil.; Instituto de Biologia do Exército, Laboratório de Entomologia, Rio de Janeiro, RJ, Brasil., Borges DT; Prefeitura da Cidade do Rio de Janeiro, Secretaria Municipal de Saúde, Rio de Janeiro, RJ, Brasil., Lima JBP; Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Fisiologia e Controle de Artrópodes Vetores, Rio de Janeiro, RJ, Brasil.; Instituto de Biologia do Exército, Laboratório de Entomologia, Rio de Janeiro, RJ, Brasil.
Jazyk:	angličtina
Zdroj:	Memorias do Instituto Oswaldo Cruz [Mem Inst Oswaldo Cruz] 2020 Oct 30; Vol. 115, pp. e200271. Date of Electronic Publication: 2020 Oct 30 (Print Publication: 2020).
DOI:	10.1590/0074-02760200271
Abstrakt:	Background: 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. Objectives: 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. Methods: 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. Findings: 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. Main Conclusions: 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.
Databáze:	MEDLINE
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