Methoprene and synergized pyrethrins as aerosol treatments to control Plodia interpunctella (Hübner), the Indian meal moth (Lepidoptera: Pyralidae)

Jenson, Emily A.; Arthur, Frank H.; Nechols, James R.

doi:10.1016/j.jspr.2009.11.002

Cited by 24 publications

(15 citation statements)

References 17 publications

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“…This is consistent with the Þnding of Jenson et al (2010b) that found no difference in P. interpunctella development from egg to adulthood after exposure to pyrethrins and IGR aerosol application in either unobstructed or concealed locations. One reason for the lack of a clear impact of physical features in our study may have been that this is a newer mill with modern equipment that is mounted higher off the ground to facilitate cleaning, which resulted in few areas with small gap heights.…”

Section: Discussionsupporting

confidence: 91%

“…Jenson et al (2010b) has previously shown that pyrethrins and IGR aerosol application efÞcacy against Plodia interpunctella (Hü bner) (Lepidoptera: Pyralidae) eggs decreased (i.e., increased survival to adulthood from egg stage) with distance from a ceiling-mounted aerosol dispenser. Features within the interior of the room such as equipment and structural pillars, which we anticipated might impact aerosol deposition, did not in most cases have lower efÞcacy, and coverage in the interior of the room was relatively consistent.…”

Section: Discussionmentioning

confidence: 99%

“…Given that some aerosol insecticides have limited residual activity (e.g., dichlorvos, pyrethrins), there are constraints where this can be applied. Another approach that can typically only be used in nonoperational or research facilities is to place dishes with insects out during an aerosol application and evaluate the mortality afterward (Arthur 2008, Arthur and Campbell 2008, Jenson et al 2010b, Subramanyam et al 2014.…”

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confidence: 99%

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Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

2014

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Aerosol insecticides are commonly used for management of stored-product pests inside food facilities, but the physical complexity of the interior of most food facilities may inßuence the dispersal and deposition of droplets and create spatial variation in dosage. The spatial pattern in aerosol deposition was evaluated inside a ßour mill using a high density grid of bioassay insects. Three insecticides, Aerotech with NyGuard and Pyrocide 100 ϩ Diacon II, both pyrethrin and insect growth regulator combinations, and Vap20, an organophosphate, were evaluated at normal (27ЊC) and high (40ЊC) target temperatures. Using a newly developed efÞcacy index, there was spatial pattern to aerosol deposition detected for the pyrethrin insecticides and the pattern differed between aerosols and temperatures. Walls and corners, especially behind the direction of application, were especially vulnerable to zones of lower efÞcacy, and open areas in center of the room tended to have the highest efÞcacy. The organophosphate insecticide provided complete efÞcacy at all bioassay dish locations, probably due in part to its vapor toxicity. Using boxes 1 m in depth and 5, 10, or 20 cm in height and open on only one end, it was shown that aerosol dispersal under horizontal surfaces could be impacted by gap height, aerosol, and temperature. These results show the potential for spatial variation in aerosol efÞcacy within a food facility and identify locations with the potential to receive a lower insecticide dosage. To increase overall efÞcacy, these locations may be targeted for additional interventions to provide more uniform pest population suppression.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

2014

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“…The survivorship value calculated for methoprene at the label rate delivered as an aerosol was determined from the data presented in Jenson et al 2010b, which evaluated a methoprene-only aerosol treatment. The mean survivorship averaged across all exposure types was 31.0%.…”

Section: Methodsmentioning

confidence: 99%

“…Values for the aerosol insecticide treatment combination of methoprene and esfenvalerate were calculated from egg exposure data in Jenson et al (2010a), where both chemicals were delivered at the label rate and survival was estimated as 17.7%. The Þnal insecticide combination that was used for the simulations was the aerosol treatment of methoprene and 1% synergized pyrethrins (both at the label rate for aerosol application) from data in Jenson et al (2010b). Survival was estimated as 5.4%, which was the lowest survivorship used in the simulations.…”

Section: Methodsmentioning

confidence: 99%

Economic Feasibility of Methoprene Applied as a Surface Treatment and as an Aerosol Alone and in Combination With Two Other Insecticides

et al. 2013

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Low reduction of invasive ant colony productivity with an insect growth regulator

Yeeles

Strain

Lenancker

et al. 2020

Pest Management Science

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BACKGROUND Insect growth regulators (IGRs) generally are considered to have safer eco‐toxicological profiles than the more commonly used neurotoxins and metabolic inhibitors, and are extremely effective against several insect groups, including some invasive ant species. However, use of an IGR product in a large‐scale eradication program for a widespread invasive ant (Anoploepis gracilipes; yellow crazy ant) was ineffective. We tested the IGR in question (active ingredient: (S)‐methoprene) on A. gracilipes colonies in a laboratory environment to evaluate efficacy. RESULTS We found that treatment with (S)‐methoprene resulted in lower egg production with subsequently decreased numbers of larvae, pupae, and workers over the 135 days of the experiment. None of the treated colonies died, and the number of worker ants in treated colonies was 36% of that seen in control colonies 135 days post‐treatment. Treated queen egg production was 39% lower than queens in control colonies, but we saw no effect of treatment on the internal physiology of dissected queens. Treatment had no effect on worker activity levels. CONCLUSION Our results show that although (S)‐methoprene treatment reduced production of larvae, pupae and workers in treated colonies, the magnitude of reduction was lower than might be expected considering the responses of other species against which this IGR has been tested. Our findings highlight a need for testing species‐specific responses to IGR‐based insecticides in a controlled environment, before broad‐scale field applications that could result in suboptimal management of the target species. © 2020 Society of Chemical Industry

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Methoprene and synergized pyrethrins as aerosol treatments to control Plodia interpunctella (Hübner), the Indian meal moth (Lepidoptera: Pyralidae)

Cited by 24 publications

References 17 publications

Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

Economic Feasibility of Methoprene Applied as a Surface Treatment and as an Aerosol Alone and in Combination With Two Other Insecticides

Low reduction of invasive ant colony productivity with an insect growth regulator

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