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An Integrated Pest Management Program to Control House Flies in Commercial High Rise Houses

Department of Entomology, Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0319; Phone: (703) 231-5871; FAX: (703) 982-6050

Paul L. Ruszler

Department of Poultry Science, Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0332

Perian Dillon

Department of Entomology, Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0319

Lorraine Carter

1610 Westbridge, E29, Fort Collins, CO 80526

Roger Youngman

Department of Entomology, Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0319

Correspondence: E. Craig Turner, Jr.

Ophyra aenescens (Weidemann), a facultative predator, was mass reared at a commercial egg farm and released into the manure pits of six high rise controlled environment cage layer poultry houses as part of a four year/five phase integrated pest management (IPM) program to control house flies. The phases included: 1) monitoring house flies in each house to determine when the house fly population exceeded a fly nuisance threshold (FNT); 2) manure management; 3) release of mass reared predators; 4) use of insecticide bait panels containing 1% methomyl; and 5) treatment of feed with cyromazine if the FNT was exceeded. The IPM program was implemented from April 1987 to September 1990. It was compared to a standard control program used in 1986, in which synergized pyrethrin sprays, fly baits and cyromazine feed additives were applied to four houses. The cost of this latter program was $15,689.63. the cost of the IPM program was $3,082.10 per year for all six houses. It was concluded that on site mass rearing of O. aenescens was a feasible and economical program to help control house flies in commercial high rise poultry houses.

Key Words: Integrated pest management • house flies • Ophyra aenescens