129 - Field trials and resistance testing in Maricopa County

Abstract: Maricopa County is in the south-central part of Arizona and is the fourth most populated county in the United States. It contains about 62% of Arizona's population, making Arizona one of the most centralized states in the United States. Encompassing 9,300 sq miles, it is the 15th largest county in the nation and one of the fastest growing over the last 10 years. New construction and habitats created for aesthetic reasons have brought additional challenges to our program. On top of that, the monsoon season and flood irrigation bring other concerns. We larvicide 1000’s of routine sites monthly and treat between 2k-10k green pools every year. With the number of treatments made annually in an area of this size, we are always concerned with resistance issues. Over the past several years we have been performing field trials and larval resistance testing on our local mosquito populations. We will discuss the findings and results in this presentation.