A portable electroantennogram (EAG) device was used to measure relative pheromone concentration in forest plots treated aerially with plastic laminate flakes impregnated with disparlure at doses of 75 and 38 g a.i./ha. A pulley system was used to raise the EAG into the forest canopy to
measure differences in pheromone concentration at different heights. Levels of pheromone were significantly higher in the canopy than at ground level, and were highest in plots treated at the higher dose.
Species 1: Lepidoptera Lymantriidae Lymantria dispar (gypsy moth)
Keywords: disparlure, electroantennogram
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