Matching Treatments to Scale: Using Yard-scale Treatments for the Control of Ae. alboptictus

Friday, October 11, 2019 - 2:00pm


Brandon Hollingsworth
North Carolina State University


Mosquito control in the 20th century was centered around large-scale treatments, targeting neighborhoods or cities as a whole. This paradigm worked well against the malaria-spreading anopheline mosquitoes that were the target of those campaigns. In more recent decades, the target of mosquito control in the United States has switched to the container-utilizing Aedes mosquitoes, Ae. aegypti and Ae. albopictus. While these mosquitoes have similar life histories to the anophelines, there are a number of important differences between the groups, e.g. motility and spatial heterogeneity, that likely play a role in the success of any control program. Here, I will discuss our ongoing work to determine an optimal policy for the reduction of Ae. albopictus populations, and the importance of their spatially heterogenous distribution. First, we will use field studies to discuss the appropriate scale of heterogeneity for Ae. albopictus. Next, we discuss a mathematical framework for determining an optimal policy for the deployment of mosquito controls. Then, again using field experiments, we attempt to quantify the effects of yard-scale treatments on mosquito populations, both in the treated area and in nearby areas, and begin the parameterization of the model. Finally, we will discuss gaps in our knowledge that need to be addressed and possible implications of using yard-scale controls.