Development of a Pheromone-based Monitoring System for the Macadamia Nut Borer, Cryptophlebia ombrodelta(Lower) (Tortricidae: Olethreutinae), in Australia

다국어 초록 (Multilingual Abstract)

The pheromone of the macadamia nut borer, Cryptophlebia ombrodelta(Lower), was evaluated for its suitability as a monitoring tool. The first objective was to establish a correlation between the number of males recovered from pheromone traps and oviposition. When data on numbers of eggs recovered was adjusted using an empirical formula to predict when oviposition occurred, a reasonable correlation between trap catch and oviposition was revealed. A sharp rise in weekly pheromone trap catch often either preceded or coincided with a sharp rise in oviposition and it was concluded that on the basis of one season's data, the first record of 6 or more moths/8 traps/day indicates the need to begin sampling for eggs. The influence of trap height was also investigated. Significantly more moths were caught in traps placed at 5m(just below the top of the canopy) than at 2m above ground level.