Ground water tanks are known to be preferred Aedes aegypti oviposition places. An insecticidal coating-IC (alphacypermethrin-ACM + pyriproxyfen-PPF), applied to the interior walls of tanks, was effe.....

Diflubenzuron (DFB1) and pyriproxyfen (PPF) are pesticides widely used in agriculture and urban environments to control insect actions. The aim of thi…

Publication date: May 2025 Source: Acta Tropica, Volume 265 Author(s): Aylane Tamara dos Santos Andrade, Cláudia Patrícia da Silva Tavares, Francisco Augusto da Silva Ferreira, André Correa de Oliveira, Suelen Costa Lima, Joaquim Ferreira do Nascimento Neto, Bianca Geovana Viana Pereira, Genilson Oliveira Rodrigues, Joelma Soares da Silva, Valéria Cristina Soares Pinheiro, Rosemary Aparecida Roque

In The Lancet Infectious Diseases, Fernando Abad-Franch and colleagues1 present the results of a study that used distributions in case data to assess the effect of mosquito-disseminated pyriproxyfen t...

Publication date: Available online 13 December 2025 Source: Acta Tropica Author(s): Valéria Cristina Soares Pinheiro, Juliete Lima Viana, Joelma Soares da Silva, Márcia Verônica Pereira Gonçalves, Aylane Tamara dos Santos Andrade, Ademir Jesus Martins

Publication date: Available online 13 December 2025 Source: Acta Tropica Author(s): Valéria Cristina Soares Pinheiro, Juliete Lima Viana, Joelma Soares da Silva, Márcia Verônica Pereira Gonçalves, Aylane Tamara dos Santos Andrade, Ademir Jesus Martins

AbstractIn2Care traps combining an insect growth regulator (pyriproxyfen) with an entomopathogen (Beauveria bassiana) have been developed as an effective way of reducing mosquito populations with promising results. Here, we test the technology in Jeddah, Saudi Arabia, against #Aedes aegypti #mosquitoes. In2Care traps might be particularly suitable in Jeddah because harsh climatic conditions in the hot dry season may limit #Aedes movement when #mosquitoes likely persist in localized sites around underground car parks and other built structures. After 8 wk of deployment, the proportion of positive traps in the intervention area was gradually reduced by 39% in the unfavorable season compared with a control area. No adults emerged from In2Care traps. Breeding containers placed in the trial site, 3 wk after termination of the trial, showed a range of emergence values from 0 to 100% compared with controls where emergence was always >80%. In subsequent interventions in three other sites, we obtained reductions of 30% to 52% based on positive traps and egg numbers per trap. However, the intervention did not reduce numbers at one site which was expected to be a mosquito hotspot and subsequently shown to have an estimated mosquito population 5.2× larger than the adjacent control area. The clear reduction at some sites and an increasing reduction in numbers over time at others, several weeks after post-In2Care monitoring operations were completed, highlight the potential of the In2Care approach in this environment. The approach could help to reduce routine pesticide-based fogging that forms the mainstay of current control measures in Jeddah.

AbstractIn2Care traps combining an insect growth regulator (pyriproxyfen) with an entomopathogen (Beauveria bassiana) have been developed as an effective way of reducing mosquito populations with promising results. Here, we test the technology in Jeddah, Saudi Arabia, against #Aedes aegypti #mosquitoes. In2Care traps might be particularly suitable in Jeddah because harsh climatic conditions in the hot dry season may limit #Aedes movement when #mosquitoes likely persist in localized sites around underground car parks and other built structures. After 8 wk of deployment, the proportion of positive traps in the intervention area was gradually reduced by 39% in the unfavorable season compared with a control area. No adults emerged from In2Care traps. Breeding containers placed in the trial site, 3 wk after termination of the trial, showed a range of emergence values from 0 to 100% compared with controls where emergence was always >80%. In subsequent interventions in three other sites, we obtained reductions of 30% to 52% based on positive traps and egg numbers per trap. However, the intervention did not reduce numbers at one site which was expected to be a mosquito hotspot and subsequently shown to have an estimated mosquito population 5.2× larger than the adjacent control area. The clear reduction at some sites and an increasing reduction in numbers over time at others, several weeks after post-In2Care monitoring operations were completed, highlight the potential of the In2Care approach in this environment. The approach could help to reduce routine pesticide-based fogging that forms the mainstay of current control measures in Jeddah.

The boosted sterile insect technique, which involves releasing sterile males treated with a biocide such as pyriproxyfen to contaminate breeding sites, has been shown to be effective against Aedes #vectors. This approach could prevent the establishment of invasive #mosquitoes sharing the same larval habitats, such as Anopheles stephensi.

The boosted sterile insect technique, which involves releasing sterile males treated with a biocide such as pyriproxyfen to contaminate breeding sites, has been shown to be effective against Aedes #vectors. This approach could prevent the establishment of invasive #mosquitoes sharing the same larval habitats, such as Anopheles stephensi.

Publication date: May 2025 Source: Acta Tropica, Volume 265 Author(s): Aylane Tamara dos Santos Andrade, Cláudia Patrícia da Silva Tavares, Francisco Augusto da Silva Ferreira, André Correa de Oliveira, Suelen Costa Lima, Joaquim Ferreira do Nascimento Neto, Bianca Geovana Viana Pereira, Genilson Oliveira Rodrigues, Joelma Soares da Silva, Valéria Cristina Soares Pinheiro, Rosemary Aparecida Roque