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Title: Monitoring oriental fruit moth (Lepidoptera: Tortricidae) with sticky traps baited with terpinyl acetate and sex pheromone

item CICHON, LILIANA - National Institute Of Agricultural Technology(INTA)
item FUENTES, EDUARDO - University Of Talca
item BARROS, WILSON - University Of Talca
item BASOALTO, ESTEBAN - Oregon State University
item HILTON, RICK - Oregon State University
item Knight, Alan

Submitted to: Journal of Applied Entomology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/11/2012
Publication Date: 5/18/2012
Citation: Cichon, L., Fuentes, E., Barros, W., Basoalto, E., Hilton, R., Knight, A.L. 2012. Monitoring oriental fruit moth (Lepidoptera: Tortricidae) with sticky traps baited with terpinyl acetate and sex pheromone. Journal of Applied Entomology. 137:275-281. DOI 10.1111/j.1439-0418.2012.01732.x.

Interpretive Summary: Oriental fruit moth is the major insect pest attacking stone fruits, apples, and pears in the United States and is an important quarantine pest. ARS researchers at the USDA, ARS, Yakima Agricultural Research Laboratory, Wapato, WA in collaboration with researchers at Oregon State University, INTA in Argentina, and University of Talca in Chile are studing the use of new trap and lure combinations to improve monitoring of this pest in orchards treated with sex pheromones for mating disruption. Field studies showed that a new, easier-to-use trap design is much more attractive than a sex pheromone-baited trap and can track both moth sexes. These results suggest that managers will be able to more effectively manage this pest with mating disruption.

Technical Abstract: Studies in Argentina and Chile during 2010-11 evaluated a new trap (Ajar) for monitoring the oriental fruit moth, Grapholita molesta (Busck). The Ajar trap was delta-shaped with a jar filled with a terpinyl acetate plus brown sugar bait attached to the bottom center of the trap. The screened lid of the jar was inserted inside the trap and moths were caught on a sticky insert surrounding the lid. The Ajar trap was evaluated with and without the addition of a sex pheromone lure and compared with delta traps left unbaited or baited with a sex pheromone lure and a bucket trap filled with the same liquid bait. Studies were conducted in a sex pheromone-treated orchard in Argentina and an untreated orchard in Chile. In Chile the Ajar trap without the sex pheromone lure caught significantly fewer males, females, and total moths than the bucket trap; and fewer males and more females than the sex pheromone-baited delta trap. Total moth catch did not differ between the Ajar trap without a sex pheromone lure and the sex pheromone-baited trap. Adding a sex pheromone lure to the Ajar trap significantly increased total moth catches to levels not different from those in the bucket trap. However, the Ajar trap with the sex pheromone lure caught significantly more males and fewer females than the bucket trap. In Argentina the Ajar trap with or without the addition of a sex pheromone lure caught similar numbers of both sexes and total moths as the bucket trap. The sex pheromone-baited delta trap caught < 4% of the number of moths as these three traps. The bucket trap in both studies caught significantly more nontargets than the delta and Ajar traps. Moth catches in the Ajar trap declined significantly after 2-3 weeks when the bait was not replaced.