Resistance in Constant Exposure Livestock Insect Control Systems: A Partial Review with Some Original Findings on Cyromazine Resistance in House Flies

Publisher Website
Google Scholar
Abstract
Insecticide resistance development in three continuous exposure livestock insect control systems is discussed. These include residual pyrethroid sprays and cyromazine feed-through for house flies, and insecticide cattle ear tags for horm flies. All three of these systems selected for resistance problems in the field within two years. Other discontinuous use patterns of these same chemicals have been used on the same insects in the field and selected for much lower or no resistance. The conclusion is that these systems waste the resource of insect susceptibility, especially with mobile insects with short generation time such as the flies discussed here.