RELATIONSHIPS BETWEEN CATCH IN PHEROMONE-BAITED TRAPS AND LARVAL DENSITY OF THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)

Abstract
Larval densities and catch of adult male Choristoneura fumiferana (Clemens) in pheromone-baited covered funnel traps in the same year were highly correlated. Such traps avoid saturation problems associated with conventional sticky traps. Release of marked males resulted in recapture rates of up to 21% in covered funnel traps. The findings suggest that non-saturating pheromone-baited traps could be used to monitor population densities and trends of the spruce budworm.