7L.f Mosquito Production and Control in Animal WasteLagoons

T HE high organic content of animal waste lagoons pro-vides a favorable environment for the production of those species of mosquitoes which prefer polluted waters. The most common species in lagoons in the southern United States is Culex pipiens quinquefasciatus Say which is known as the southern house mosquito (Steelman et al. 1967a,b; Weidhaas et al. 1973). Other closely related forms in the Culex pipiens mosquito speciescomplex are common in polluted waters throughout the world (Barr 1957, Laven 1967, Mattingly 1951). Control of these mosquitoes in animal waste lagoons, as well as other polluted waters, is often necessaryto reduce the potential for diseasetransmis-sion and the level of annoyance from mosquito bites. Therefore, we are investigatingthe factors affecting mosqui-to production from animal waste lagoons and methods for mosquito control. This report summarizes our data on (a) the relationship between swine and poultry lagoon manure-loading ratesand the numbers of C. p. quinquefasciatus produced, and (b) the effectiveness of various insecticides and insect growth regulators for mosquito control in swine wastelagoons