Symposium on Agroacoustics: Acoustical Detection and Estimation of Rhyzopertha Dominica (F.) Larval Populations in Stored Wheat

The possibility of using insect-produced sounds to estimate insect populations without removing grain samples was investigated. The number of insect-produced sounds, heard with a piezoelectric microphone pushed into the grain, increased as the number of lesser grain borer, Rhyzopertha dominica (F.), larvae increased. The probabilities of detection and the accuracy of estimation of insect densities with the acoustical method were comparable to those obtained with a standard grain trier.