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Exploring an Odor-Baited “Trap Bush” Approach to Aggregate Plum Curculio (Coleoptera: Curculionidae) Injury in Blueberries

P.E. Marucci Center for Blueberry & Cranberry Research, Rutgers University, Chatsworth, NJ 08019, USA
Rutgers Agricultural Research and Extension Center, Rutgers University, Bridgeton, NJ 08302, USA
USDA-ARS, Fruit and Tree Nut Research Laboratory, Byron, GA 31008, USA
Corteva Agriscience, Fresno, CA 93706, USA
USDA-ARS, Appalachian Fruit Research Station, Kearneysville, WV 25430, USA
Author to whom correspondence should be addressed.
Insects 2019, 10(4), 113;
Received: 15 March 2019 / Revised: 6 April 2019 / Accepted: 13 April 2019 / Published: 19 April 2019
PDF [1790 KB, uploaded 21 April 2019]


This 2-year study (2013–2014) assessed the efficacy of an odor-baited “trap bush” approach to aggregate plum curculio, Conotrachelus nenuphar, adult injury, i.e., number of oviposition-scared fruit, in four commercial highbush blueberry farms in New Jersey (USA). In each farm, we compared fruit injury in bushes baited with grandisoic acid and benzaldehyde along the perimeter of trap-bush plots versus unbaited bushes in control plots. We also measured the amount of fruit injury in neighboring bushes (i.e., spillover effect) and in the plots’ interior. In both years, the amount of fruit injury by C. nenuphar adults was greater on and near odor-baited bushes in trap-bush plots compared with those on and near unbaited bushes in control plots, indicative of aggregation. Injury in unbaited bushes neighboring trap bushes was often greater than unbaited bushes in control plots, providing some evidence for a spillover effect. However, no difference in fruit injury was found between interior trap-bush and control plots. Therefore, odor-baited trap bushes can be used in blueberries to manipulate C. nenuphar foraging behavior, i.e., aggregate adults, without compromising injury in field interiors. Under this approach, insecticides could then be targeted at only a few (perimeter-row) bushes within fields rather than entire fields. View Full-Text
Keywords: Conotrachelus nenuphar; Vaccinium corymbosum; weevil; semiochemicals; aggregation pheromone Conotrachelus nenuphar; Vaccinium corymbosum; weevil; semiochemicals; aggregation pheromone

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Rodriguez-Saona, C.; Nielsen, A.; Shapiro-Ilan, D.; Tewari, S.; Kyryczenko-Roth, V.; Firbas, N.; Leskey, T. Exploring an Odor-Baited “Trap Bush” Approach to Aggregate Plum Curculio (Coleoptera: Curculionidae) Injury in Blueberries. Insects 2019, 10, 113.

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