Location: Mosquito and Fly Research Unit
2011 Annual Report
A summary of project progress in calendar year 2010 and planned activities for calendar year 2011 were presented by Rutgers and Brandeis team members to ARS personnel and the Project Evaluation Team at an annual program review held in January 2011 at Rutgers University, New Brunswick, NJ. In 2010, a 50%-60% reduction in adult Asian Tiger mosquito (ATM) abundance was achieved in the Full Intervention sites in both Mercer and Monmouth Counties; with a maximum 75% reduction in Monmouth County. Backpack applications of pyriproxyfen insecticide in 10% of the sites had no effect on adult ATM. Active educational efforts reduced the number of containers with immature mosquitoes in backyards but these efforts need to be reinforced. In 2011, surveillance efforts began in May with weekly trapping of adults, egg counts and species identification from ovitraps. The 2011 control efforts began in April and focused on area-wide application of larvicides guided by a degree-day model. The Full Intervention and Control sites were switched in Monmouth County to measure cumulative effects of prior source reduction activities and to evaluate the degree-day, area-wide larvicide strategy. No parcel-to-parcel source reduction or larviciding was conducted. In July, a “hot-spot” treatment procedure using traps; treatment of larval habitats with spinosad (an insect growth regulator), source reduction, and removal of excess vegetation; and hand held ultra low volume spraying occurred in the Full Intervention site in Mercer County. An effort began to expand the project from the 2 original New Jersey counties to 2 “new” sites in Mercer and Monmouth Counties, 2-4 sites in 3 counties in Pennsylvania, 2 counties in Louisiana and Virginia, and 1 county in Florida. Prior to detection of ATM activity, sites were surveyed with 20-25 ovitraps. Egg papers were sent to Rutgers for processing to find pairs of sites with similar ATM dynamics where control activities might occur in 2012. Various aspects of these results were presented and discussed at the annual meetings of the American Society of Tropical Medicine and Hygiene in Atlanta, GA (November 2010) and the American Mosquito Control Association in Anaheim, CA (March, 2011).
Progress was monitored during the period of Asian tiger mosquito activity. Project activities were monitored via weekly e-mail updates of field activities and results, and periodic conference calls between team members and ARS staff.