Evaluation of bifenthrin barrier spray on foliage in a suburban eastern North Carolina neighborhood

VanDusen, Amberlynne E.; Richards, Stephanie L.; Balanay, Jo Anne G.

doi:10.1002/ps.4081

Cited by 17 publications

(13 citation statements)

References 9 publications

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“…A standard solution of bifenthrin was prepared by dissolving 12.8 mg of technical-grade active ingredient (Sigma-Aldrich, St. Louis, MO, USA) in acetone (1000 mL) then taking 1 mL of the stock solution and dissolving it into 100 mL of acetone to obtain the 0.128 ug/mL stock solution [ 30 , 31 ]. This bifenthrin dose was used because our previous study determined that this is the amount of bifenthrin residue detected on foliage after a barrier spray was conducted [ 31 ]. Bottles were coated with the bifenthrin stock solution (0.128 μg/mL) following the Centers for Disease Control and Prevention (CDC) Bottle Bioassay protocol [ 32 ].…”

Section: Methodsmentioning

confidence: 99%

Impact of Mosquito Age and Insecticide Exposure on Susceptibility of Aedes albopictus (Diptera: Culicidae) to Infection with Zika Virus

et al. 2018

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Zika virus (ZIKV) is primarily transmitted to humans by Aedes aegypti and Ae. albopictus. Vector–virus interactions influencing vector competence vary and depend on biological and environmental factors. A mosquito’s chronological age may impact its immune response against virus infection. Insecticides, source reduction, and/or public education are currently the best defense against mosquitoes that transmit ZIKV. This study assessed the effects of a mosquito’s chronological age at time of infection on its response to ZIKV infection. We exposed young (6–7 d post-emergence) and old (11–12 d post-emergence) Ae. albopictus to a sublethal dose of bifenthrin prior to oral exposure to blood meals containing ZIKV (7-day incubation period). Old mosquitoes experienced a significantly (p < 0.01) higher rate of mortality than young mosquitoes. Significantly higher ZIKV body titers (p < 0.01) were observed in the old control group compared to the young control group. Significantly higher (p < 0.01) ZIKV dissemination rates and leg titers (p < 0.01) were observed in old bifenthrin-exposed mosquitoes compared to old control mosquitoes or young bifenthrin-exposed or control mosquitoes. Hence, bifenthrin exposure may increase the potential for virus transmission; however, the degree of these impacts varies with mosquito age. Impacts of insecticides should be considered in risk assessments of potential vector populations.

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Section: Methodsmentioning

confidence: 99%

Impact of Mosquito Age and Insecticide Exposure on Susceptibility of Aedes albopictus (Diptera: Culicidae) to Infection with Zika Virus

et al. 2018

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“…Hence, homeowners may hire private pest management professionals to conduct barrier insecticide sprays on vegetation surrounding residences. Barrier sprays may lower mosquito abundance for up to few weeks, depending on environmental conditions (Cilek 2008, Doyle et al 2009, VanDusen et al 2016, Richards et al 2017.…”

Section: Introductionmentioning

confidence: 99%

“…Bifen I/T is the generic formulation of TalStart Termiticide/Insecti-cide (7.9% bifenthrin) (DoMyOwn 2018). A study of Bifen I/T barrier sprays administered in eastern North Carolina found an average reduction of 54% of hostseeking mosquito populations in treated properties compared with untreated controls (VanDusen et al 2016). The same study used backpack mist sprayers to apply Bifen I/T every 3 wk to 5 treatment properties.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Barrier Sprays for Controlling Mosquitoes in Eastern North Carolina: Can Land Cover and Spatial Analyses Improve Predictions of Efficacy?

Bunn

Balanay

Richards

2019

Journal of the American Mosquito Control Association

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Mosquitoes can be a nuisance and can transmit pathogens causing numerous diseases. Homeowners may hire private companies that use barrier sprays to alleviate mosquito-related issues, especially in areas where government funding for mosquito control programs is limited. Here, the spatial distribution of mosquitoes was evaluated in a suburban neighborhood during successive treatments with either Bifen Insecticide/ Termiticide (active ingredient: bifenthrin) or Suspend Polyzone (active ingredient: deltamethrin) from May 17 to November 8, 2016. A total of 15,083 adult mosquitoes and 18,054 mosquito eggs were collected. Analysis of variance (P , 0.05) was used to analyze differences in abundance of key species between weeks, traps, and treatments. Weather trends were analyzed in relation to mosquito abundance using time-lagged weekly average temperatures and total rainfall. Kriging showed hot spots of mosquito abundance. The spatial pattern of abundance was different for oviposition and adults, and this was expected because of different types of traps used here. A land cover analysis was performed within the geographic information system (GIS) file to determine the extent to which land cover type could predict mosquito abundance. We show an uneven distribution of host-seeking mosquito abundance and that, in general, mosquitoes preferred areas that were lightly wooded or composed of small collections of trees or bushes, compared with larger densely wooded areas. Analyses of spatial distribution, land cover, and weather can be used to supplement an integrated mosquito management approach.

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“…Barrier treatments applied to plant foliage can reduce the use of broad-scale applications of chemicals in the environment and prevent mosquitoes from entering into untreated areas (Cilek andHallmon 2006, Cilek 2008). Common barrier spray treatments have included lambda-cyhalothrin (Trout et al 2007, Unlu et al 2017, bifenthrin (Trout et al 2007, VanDusen et al 2016, Richards et al 2017, deltamethrin (Cilek andHallmon 2006, Richards et al 2017), and permethrin (Cilek andHallmon 2006, Amoo et al 2008). Treatments are typically applied every 21-30 days in the United States.…”

Section: Introductionmentioning

confidence: 99%

Effects of Plant Species, Insecticide, and Exposure Time On the Efficacy Of Barrier Treatments Against Aedes albopictus

McMillan

Bova

Brewster

et al. 2018

Journal of the American Mosquito Control Association

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The effect of 5 plant species (arborvitae [Thuja occidentalis], boxwood [Buxus sp., Japanese honeysuckle [Lonicera japonica], rhododendron [Rhododendron sp.], and zebra grass [Miscanthus sinensis]) and 2 rates of lambda-cyhalothrin (3.13 ml and 6.25 ml active ingredient [AI]/liter) on knockdown (1 h) and mortality (24 h) of adult female Aedes albopictus was evaluated over an 8-wk period. A significant difference in knockdown was observed between the 2 rates of lambda-cyhalothrin on the 5 plant species, with the highest proportion of knockdown observed on zebra grass and rhododendron treated at the higher rate. Although mortality was 60% and 85% on the 5 plant species at the low and high rates of lambda-cyhalothrin, respectively, a significant difference between the 2 rates was only observed on boxwood and Japanese honeysuckle (P , 0.0001). We also tested the residual toxicity of 3 barrier sprays (lambda-cyhalothrin, bifenthrin, and deltamethrin) and evaluated the efficacy of a short (5-min) exposure to the insecticides on knockdown and mortality of adults over time. Significantly higher knockdown was observed with lambda-cyhalothrin compared with bifenthrin and deltamethrin (P , 0.0001). Mean knockdown was~98%, 92%, and 20% for lambda-cyhalothrin, bifenthrin, and deltamethrin, respectively, at week 2, and~98%, 0%, and 44%, respectively, 8 wk after treatments were applied. Adult mortality from the 3 chemical treatments, however, remained above 90% throughout the study. Lastly, the trends in mean proportion of knockdown were similar for mosquitoes exposed for either 5 min or 24 h to the 3 chemicals. An overall decline in mean mortality over time, however, was observed for mosquitoes exposed for 5 min to the chemicals compared with mortality from the 24-h exposure. The results suggest that lambda-cyhalothrin can be an effective barrier spray treatment against Ae. albopictus adults because its efficacy is limited little by plant species, it has long residual toxicity, and it is effective following only 5 min of exposure.

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Evaluation of bifenthrin barrier spray on foliage in a suburban eastern North Carolina neighborhood

Cited by 17 publications

References 9 publications

Impact of Mosquito Age and Insecticide Exposure on Susceptibility of Aedes albopictus (Diptera: Culicidae) to Infection with Zika Virus

Impact of Mosquito Age and Insecticide Exposure on Susceptibility of Aedes albopictus (Diptera: Culicidae) to Infection with Zika Virus

Evaluation of Barrier Sprays for Controlling Mosquitoes in Eastern North Carolina: Can Land Cover and Spatial Analyses Improve Predictions of Efficacy?

Effects of Plant Species, Insecticide, and Exposure Time On the Efficacy Of Barrier Treatments Against Aedes albopictus

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