Dual‐treatment autodissemination station with enhanced transfer of an insect growth regulator to mosquito oviposition sites

Wang, Yi; Suman, Devi Shankar; Bertrand, Jacques; Dong, Limin; Gaugler, Randy

doi:10.1002/ps.3702

Cited by 31 publications

(47 citation statements)

References 20 publications

(45 reference statements)

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“…albopictus to deliver pyriproxyfen to larval habitats [12,14,30]. Attracted to the station by an oak infusion, the mosquito enters the station but is unable to reach the water and oviposit.…”

Section: Discussionmentioning

confidence: 99%

“…The impact of pyriproxyfen on non-targets is minimal as dissemination is tightly targeted to small, scattered, container habitats. Additionally, the amount carried by females is minuscule which further reduces insecticide load in the environment [14]. …”

Section: Discussionmentioning

confidence: 99%

“…1000 m 2 test blocks, with each block receiving one station in 2013 and two stations in the 2014 study. Dual phase autodissemination stations [14] were used in 2013, whereas the stations tested in 2014 were slightly modified. The major differences between 2013 and 2014 stations were the configuration of formulation cartridges.…”

Section: Methodsmentioning

confidence: 99%

“…Cups were observed until either all individuals emerged as adults or died. Samples showing complete emergence inhibition or 100% pupal mortality were sent for residue analysis at Golden Pacific Laboratory, California, USA using LC-MS-MS analysis as described previously [14]. …”

Section: Methodsmentioning

confidence: 99%

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Targeting a Hidden Enemy: Pyriproxyfen Autodissemination Strategy for the Control of the Container Mosquito Aedes albopictus in Cryptic Habitats

et al. 2016

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BackgroundThe Asian tiger mosquito, Aedes albopictus, is a vector of dengue, Chikungunya, and Zika viruses. This mosquito inhabits a wide range of artificial water-holding containers in urban and suburban areas making it difficult to control. We tested the hypothesis that female-driven autodissemination of an insect growth regulator could penetrate cryptic oviposition habitats difficult to treat with conventional insecticidal sprays.MethodologyOviposition preferences of Ae. albopictus females for open and cryptic cups were tested in semi-field experiments. Two conventional larvicidal sprayers were tested to determine droplet penetration and larvicidal efficacy in open and cryptic habitats using Bacillus thuringiensis var. israelensis (Bti) in the field. Finally, the efficacy of pyriproxyfen autodissemination stations was assessed in cryptic and open cups in residential areas during 2013 and 2014.Principal FindingsGravid females strongly preferred cryptic (53.1±12.9 eggs/cup) over open (10.3±4.3 eggs/cup) cups for oviposition. Cryptic cups showed limited droplet penetration and produced 0.1–0.3% larval mortality with a conventional backpack and low-volume sprays of Bti. The autodissemination stations effectively contaminated these cryptic cups (59.3–84.6%) and produced 29.7–40.8% pupal mortality during 2013–2014. Significant pupal mortality was also observed in open cups.ConclusionsThe autodissemination station effectively exploits the oviposition behavior of wild gravid females to deliver pyriproxyfen to targeted oviposition habitats. Although the pupal mortality in cryptic cups was relatively lower than expected for the effective vector control. Autodissemination approach may be a suitable supporting tool to manage Ae. albopictus immatures in the cryptic habitats those are less accessible to conventional larvicidal sprays.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Targeting a Hidden Enemy: Pyriproxyfen Autodissemination Strategy for the Control of the Container Mosquito Aedes albopictus in Cryptic Habitats

et al. 2016

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“…However, Koama et al showed that a single exposure to pyriproxyfen treated netting reduced the number of eggs laid by >75% over three gonotrophic cycles when the first blood-meal was shortly after exposure (Koama et al, 2015). It has been shown that pyriproxyfen is a potent inhibitor of pupal eclosion at very low concentrations and that adult mosquitoes can transfer pyriproxyfen to larval waters during oviposition (Mbare et al, 2014;Wang et al, 2014;Lwetoijera et al, 2014b). The impact of so-called autodissemination will depend on the dosage of pyriproxyfen remaining on tarsi by the time of oviposition and the volume of water in breeding sites.…”

Section: Discussionmentioning

confidence: 96%

Evaluating the sterilizing effect of pyriproxyfen treated mosquito nets against Anopheles gambiae at different blood-feeding intervals

et al. 2015

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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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Dual‐treatment autodissemination station with enhanced transfer of an insect growth regulator to mosquito oviposition sites

Abstract: The oil and pyriproxyfen powder dual-treatment station enhanced autodissemination efficacy by increasing toxicant attachment and retention on contaminated females. The autodissemination station offers a targeted, less environmentally damaging approach to manage cryptic container species.

Cited by 31 publications

References 20 publications

Targeting a Hidden Enemy: Pyriproxyfen Autodissemination Strategy for the Control of the Container Mosquito Aedes albopictus in Cryptic Habitats

Targeting a Hidden Enemy: Pyriproxyfen Autodissemination Strategy for the Control of the Container Mosquito Aedes albopictus in Cryptic Habitats

Evaluating the sterilizing effect of pyriproxyfen treated mosquito nets against Anopheles gambiae at different blood-feeding intervals

Control methods against invasive Aedes mosquitoes in Europe: a review

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