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Biology, Ecology & Management of Emerging Disease Vectors
S.L. Dobson
Department of Entomology
Non-Technical Summary
Outputs:
Development of an integrated control strategy and specific recommendations for area-wide control of the Asian tiger mosquito.
Development of models that predict risk for key mosquito-borne diseases.
Assess the feasibility of initiating large field cage experiments on the sterile insect technique.
Outcomes or Projected Impacts:
An interactive and interdependent network of scientific expertise to deal with new mosquito-borne disease outbreaks.
Impact on the general public by understanding, assessing, and mitigating the threat posed by mosquitoes of public health importance.
Enhanced capacity to detect and predict outbreaks of vectors and associated diseases.
Provide for and encourage environmentally sound, scientifically based, and professional control by mosquito control agencies.
2011 Project Description
We are working with the EPA toward the regulation of Wolbachia as a microbial pesticide of mosquitoes. An Experimental Use Permit is under evaluation. The plan is to extend this to additional domestic, medically important species, including an approach being developed for Ae. albopictus. A model cage system has been trialed for comparing Ae. albopictus populations that are either infected or uninfected with Wolbachia.
The results demonstrate significant differences in both adult and immature dynamics. Additional experiments and analysis are to use this model system to test applied strategies for suppressing Ae. albopictus populations.
Incremental increases in the rate of incompatible males released into an Ae. albopictus population will be examined for a resulting impact on the population. The goal will be to define the threshold ratio of male releases required to suppress and eliminate the laboratory population.
2011 Impact
Development of an integrated control strategy and specific recommendations for area-wide control of the Asian tiger mosquito.
Assess the feasibility of initiating large field cage experiments on the sterile insect technique.
Provide for and encourage environmentally sound, scientifically based, and professional control by mosquito control agencies.
2011 Publications
CHAMBERS, E. W., L. HAPAIRAI, B. A. PEEL, H. BOSSIN and S. L. DOBSON, 2011. Male mating competitiveness of a Wolbachia-introgressed Aedes polynesiensis strain under semi-field conditions. PLoS Negl Trop Dis 5:e1271.
CRAIN, P. R., J. W. MAINS, E. SUH, Y. HUANG, P. H. CROWLEY and S. L. DOBSON, 2011. Wolbachia infections that reduce immature insect survival: Predicted impacts on population replacement BMC Evol Biol 11:290.
BRELSFOARD, C.L. and S. L. DOBSON, 2011. Wolbachia Effects on Host Fitness and the influence of male aging on cytoplasmic incompatibility in Aedes polynesiensis (Diptera: Culicidae). Journal of Medical Entomology 48:1008-1015.
VENARD, C. M., P. R. CRAIN and S. L. DOBSON, 2011 SYTO11 staining vs FISH staining: a comparison of two methods to stain Wolbachia pipientis in cell cultures. Lett Appl Microbiol 52: 168-176.