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Area-wide ground applications of Bacillus thuringiensis var. israelensis for the control of Aedes albopictus in residential neighborhoods: from optimization to operation
- Source :
- PLoS ONE, Vol 9, Iss 10, p e110035 (2014), PLoS ONE
- Publication Year :
- 2014
- Publisher :
- Public Library of Science (PLoS), 2014.
-
Abstract
- The increasing range of Aedes albopictus, the Asian tiger mosquito, in the USA and the threat of chikungunya and dengue outbreaks vectored by this species have necessitated novel approaches to control this peridomestic mosquito. Conventional methods such as adulticiding provide temporary relief, but fail to manage this pest on a sustained basis. We explored the use of cold aerosol foggers and misting machines for area-wide applications of Bacillus thuringiensis var. israelensis (VectoBac WDG) as a larvicide targeting Aedes albopictus. During 2010–2013 we performed initially open field trials and then 19 operational area-wide applications in urban and suburban residential areas in northeastern USA to test three truck-mounted sprayers at two application rates. Area-wide applications of WDG in open field conditions at 400 and 800 g/ha killed on average 87% of tested larvae. Once techniques were optimized in residential areas, applications with a Buffalo Turbine Mist Sprayer at a rate of 800 g/ha, the best combination, consistently provided over 90% mortality. Importantly, there was no significant decrease in efficacy with distance from the spray line even in blocks of row homes with trees and bushes in the backyards. Under laboratory conditions Bti deposition in bioassay cups during the operational trials resulted in over 6 weeks of residual control. Our results demonstrate that area-wide truck mounted applications of WDG can effectively suppress Ae. albopictus larvae and should be used in integrated mosquito management approaches to control this nuisance pest and disease vector.
- Subjects :
- Epidemiology
lcsh:Medicine
Disease Vectors
medicine.disease_cause
Mosquitoes
Toxicology
Aedes
Residence Characteristics
Bacillus thuringiensis
Medicine and Health Sciences
Chikungunya
lcsh:Science
Multidisciplinary
biology
Arthropod Vectors
Agriculture
Insects
Infectious Diseases
Viral Vectors
Nuisance
Research Article
Risk
Aedes albopictus
Arthropoda
Microbiology
Vector Biology
Virology
medicine
Animals
Pest Control, Biological
Larvicide
business.industry
fungi
lcsh:R
Organisms
Pest control
Biology and Life Sciences
Pesticide
biology.organism_classification
Invertebrates
Insect Vectors
Biotechnology
Vector-Borne Diseases
lcsh:Q
Pest Control
PEST analysis
business
Zoology
Entomology
Viral Transmission and Infection
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 9
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....9ba0bcb489e8ce8f87307cab3d3db359