Location: Mosquito and Fly Research2009 Annual Report
1a. Objectives (from AD-416)
(1) Demonstrate a strategy for area-wide Aedes albopictus control; (2) demonstrate the public health importance and socio-economic benefits of area-wide mosquito control; and (3) transfer the strategy to end-users of the technology.
1b. Approach (from AD-416)
Will establish and implement an areawide pest management research and action program for Asian tiger mosquito management which (a) results from a stakeholder partnership and collaboration dedicated to the demonstration and areawide adoption of Asian tiger mosquito control technologies and (b) achieves an Asian tiger mosquito management system so end-users, consultants and other interested parties will be left with an affordable program. This will require the development of a multidisciplinary approach between Federal, State, local and private interests, and whose participants will be involved in the program from conception to adoption.
3. Progress Report
Field activities at the 9 sites surveyed in Mercer and Monmouth Counties during the 2008 mosquito season terminated at the end of October. At that time, Brandeis University personnel implemented a household survey to: (1) determine the cost of individual and household mosquito control activities, (2) measure the improvement in residents’ quality of life achieved by this program, and (3) ascertain residents’ “willingness to pay” for potential mosquito control activities. Information on Asian Tiger Mosquito (ATM) density between July 15 and October 31, along with equivalent socioeconomic parameters (i.e., plot size, economic status, housing condition and education level), were used to select 3 study sites in each county. Pre-intervention data were collected in both Mercer and Monmouth Counties and sites were randomly assigned to (1) full intervention, (2) educational intervention only, and (3) an untreated “control” area. The surveys included mail and telephone interviews. The sample frame for this survey was created from public records. A random sample of 1,349 households was selected; half from Mercer County and half from Monmouth County. A total of 186 households received the telephone interview and the mail survey, while 1,163 households received the mail survey only. The core of the survey was to understand how mosquitoes affect the householders’ quality of life, including outdoor activities. Preparations are being made to conduct a second survey in August 2009 and data are being collected to ascertain the costs of organized control activities in these counties. Based on field experience acquired in 2008, including several trials of promising insecticides, the Core team developed a protocol for 2009. The protocol was presented to the Project Evaluation Team in February, and following productive discussions by project members and the Team, it was approved. The 2009 field activities began in late April when both Monmouth and Mercer Counties initiated source reduction and educational campaigns. Surveillance activities initiated in mid-May included weekly trapping of adults with BGS traps, egg counts and species identification from ovitraps, 50-house container surveys (Breteau index), and bi-weekly counts of artificial containers with water or with mosquito larvae near the ovitraps. The number of females collected has increased while there was an apparent 50% reduction in numbers of ATM between the full intervention site and the untreated “control” site. A reinvasion analysis examining the spatial order and rates of recurrence of ATM eggs is being conducted, as are blood meal analyses, studies of oviposition site height, and effects of day-length and container type on female oviposition behavior. Supporting research includes the development of quantitative genetic identification of eggs, baseline studies of insecticide resistance, and development of population genetic markers for the ATM. Protocols for adulticiding and the use of residual insecticides are being developed. For project communications, ATM project staff are using Google groups (AsianTigerMozzie@googlegroups.com) and developing a showcase website for the ATM project.