Interactions between thermal stress and insecticide resistance in geographically isolated Colorado potato beetle strains

Temperature has various influences on the distribution, growth, development, and insecticide resistance in insects. Different geographic locations have distinct temperatures that the organisms might be adapted to. In this study, we tested effects of exposure to high temperatures (LT₅₀) and imidacloprid (LC₂₅) on the second-instar Colorado potato beetles. The differences were compared among the strains collected from isolated geographic locations and characterized by various degrees of insecticide resistance. Relationships among temperature, imidacloprid, and beetle strain were analyzed.