Effect of Aedes aegypti exposure to spatial repellent chemicals on BG-Sentinel™ trap catches

Salazar, Ferdinand V.; Achee, Nicole L.; Grieco, John P.; Prabaripai, Atchariya; Ojo, Tolulope A; Eisen, Lars; Dureza, Christine; Polsomboon, Suppaluck; Chareonviriyaphap, Theeraphap

doi:10.1186/1756-3305-6-145

Cited by 29 publications

(30 citation statements)

References 53 publications

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“…aegypti females to pyrethroids did not significantly reduce the attraction of BGS traps. 64 This finding supports the potential effectiveness of a push-pull strategy to reduce Ae. aegypti adults inside and outside homes.…”

Section: Mechanical Methodssupporting

confidence: 54%

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Control methods against invasive Aedes mosquitoes in Europe: a review

Baldacchino

Caputo

Chandre

et al. 2015

Pest Management Science

200

152

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Five species of invasive Aedes mosquitoes have recently become established in Europe: Ae. albopictus, Ae. aegypti, Ae. japonicus japonicus, Ae. koreicus and Ae. atropalpus. These mosquitoes are a serious nuisance for people and are also competent vectors for several exotic pathogens such as dengue and chikungunya viruses. As they are a growing public health concern, methods to control these mosquitoes need to be implemented to reduce their biting and their potential for disease transmission. There is a crucial need to evaluate methods as part of an integrated invasive mosquito species control strategy in different European countries, taking into account local Aedes infestations and European regulations. This review presents the control methods available or in development against invasive Aedes mosquitoes, with a particular focus on those that can be implemented in Europe. These control methods are divided into five categories: environmental (source reduction), mechanical (trapping), biological (e.g. copepods, Bacillus thuringiensis var. israelensis, Wolbachia), chemical (insect growth regulators, pyrethroids) and genetic (sterile insect technique and genetically modified mosquitoes). We discuss the effectiveness, ecological impact, sustainability and stage of development of each control method.

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Section: Mechanical Methodssupporting

confidence: 54%

“…Semi‐field experiments showed that exposure of Ae. aegypti females to pyrethroids did not significantly reduce the attraction of BGS traps . This finding supports the potential effectiveness of a push‐pull strategy to reduce Ae.…”

Section: Mechanical Methodsmentioning

confidence: 99%

Control methods against invasive Aedes mosquitoes in Europe: a review

Baldacchino

Caputo

Chandre

et al. 2015

Pest Management Science

200

152

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“…While this showed that trans uthrin did not actively push mosquitoes into the trap it also indicated that trans uthrin exposure outdoors does not inhibit mosquitoes entering the BGS. This is contrary to Salazar et al (2013) who reported that exposing mosquitoes to trans uthrin signi cantly lowered trap catches [38]. However, trap catches were not affected if the mosquitoes allowed to recover for 12 h before BGS trap evaluation [38].…”

Section: Discussionmentioning

confidence: 60%

“…This is contrary to Salazar et al (2013) who reported that exposing mosquitoes to trans uthrin signi cantly lowered trap catches [38]. However, trap catches were not affected if the mosquitoes allowed to recover for 12 h before BGS trap evaluation [38]. This suggests that the mode of action of trans uthrin is dose and distance dependent and repellency is reversible (i.e.…”

Section: Discussionmentioning

confidence: 62%

Semi field evaluation of freestanding transfluthrin passive emanators and the BG sentinel trap as a “Push-Pull control strategy” against Aedes aegypti mosquitoes

Tambwe

Moore

Chilumba

et al. 2020

Preprint

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Background: Spatial repellents that drive mosquitoes away from treated areas, and odour-baited traps, that attract and kill mosquitoes, can be combined and work synergistically in apush-pull system. Push-pull systems have been shown to reduce house entry and outdoor biting rates of malaria vectors and so have the potential to control other outdoor biting mosquitoes such as Aedes aegypti that transmit arboviral diseases. In this study, semi-field experiments were conducted to evaluate whether a push-pull system could be used to reduce bites from Aedes mosquitoes. Methods: The push and pull under investigation consisted of two freestanding transfluthrin passive emanators (FTPE), and a BG sentinel trap (BGS) respectively. The FTPE contained hessian strips treated with 5.25g of transfluthrin active ingredient. The efficacies of FTPE and BGS alone and in combination were evaluated by human landing catch in a large semi-field system in Tanzania. We also investigated the protection of FTPE over six months. The data was analyzed using generalized linear mixed models with binomial distribution.Results: Two FTPE had a protective efficacy (PE) of 61. 2% (95% Confidence interval (CI): 52.2-69.9) against human landing rate of Aedes aegypti. The BGS did not significantly reduce mosquito landings; the PE was 2.1% (95% CI: -2.9-7.2). The combination of FTPE and BGS (push-pull) provided the PE of 64.5% (95% CI: 59.1-69.9). However, there was no significant difference in the protective efficacy between the push-pull and the two FTPE against Ae. aegypti (p=0.30). The FTPE offered significant protection against Ae. aegypti at month three, with a PE of 46.4% (95% CI: 41.1-51.8), but not at six months with a PE of 2.2 % (95% CI: -9.0-14.0). Conclusions: The PE of the FTPE and the full push-pull system are similar, indicative that bite prevention is primarily due to the activity of the FTPE. While these results are encouraging for the FTPE, further work is needed for a push-pull system to be recommended for Ae. aegypti control. The three-month protection provided by the FTPE against Ae. aegypti bites suggests it would be a useful additional personal protection tool during dengue outbreaks, that does not require regular user compliance.

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“…togoi (Theobald), Anopheles arabiensis (Giles), and Ae. aegypti . Meperfluthrin is a lesser known polyfluorinated pyrethroid, but was reported to have caused 97%, 97%, and 92% mortality when delivered through a mosquito coil against An.…”

Section: Introductionmentioning

confidence: 99%