Is susceptibility to Bt proteins required for Agrotis ipsilon aversion to Bt maize?
Agrotis ipsilon showed aversion to both Bt treatments. Aversion to Cry34Ab1/Cry35Ab1 maize was unexpected because these proteins have no known insecticidal effect against Lepidoptera; however, results confirm that this aversion was temporary and did not affect growth or development. The Cry1F results suggest that A. ipsilon will abandon Cry1F maize in the field before any selection for resistance. These data support the use of refuge to delay Cry1F resistance development in A. ipsilon populations.
Based on the positive cultures of significant organisms in the semen of our cohort, an increased semen PMN count is not a good predictor of genital tract infection in men.