Overwintering pink bollworm adults often emerge from diapause too early to reproduce successfully on cotton. This phenomenon is known as suicidal emergence. Using statewide pheromone trapping and climatic data, we developed a method to predict the fraction of suicidal emergence resulting from adoption of a given cotton planting date across Arizona. We then used deterministic simulation models to explore how manipulation of cotton planting date and use of other cultural control methods could delay the evolution of resistance to Bt cotton. The results indicate that use of cultural methods could reduce the rate of application of insecticides and delay the evolution of resistance to Bt cotton in the pink bollworm.
Species 1: Lepidoptera Gelechiidae Pectinophora gossypiella (pink bollworm)
Keywords: Bacillus thuringiensis, resistance management
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA