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28 June 2024 Comparison of ethanol-baited trap designs for ambrosia beetles in orchards in the eastern United States
Kelsey N. Tobin, Sandra Lizarraga, Rajendra Acharya, Apurba K. Barman, Brent D. Short, Angelita L. Acebes-Doria, Monique J. Rivera
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Abstract

Ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) are among the most devastating pests of orchards, nurseries, and forests. Improving trap design and ethanol lures for capturing ambrosia beetles is necessary to develop effective monitoring and management strategies. In this 2-year study, we assessed 4 trap designs and 3 commercially formulated ethanol lures to refine trapping methods tailored for orchard environments in the eastern United States. Our investigation included orchards in 2 regions, Georgia (pecan orchards) and New York (apple orchards), targeting major ambrosia beetle (Coleoptera: Curculionidae) pest species such as Xylosandrus crassiusculus (Motschulsky), X. compactus (Eichhoff), X. germanus (Blandford), and Anisandrus maiche (Stark). Among the trap designs evaluated, clear sticky cards were most effective for capturing ambrosia beetles across orchard locations. Notably, in Georgia, sticky cards paired with specific low-release ethanol lures demonstrated enhanced capture of X. crassiusculus and X. compactus, 2 key ambrosia beetle pests found infesting young pecan trees. Similarly, in New York, sticky cards baited with low-release ethanol lures captured the highest rates of X. germanus and A. maiche, thus indicating its suitability for diverse ambrosia beetle populations. Overall, our study provides practical implications for tailoring trapping protocols to optimize ambrosia beetle management strategies in orchard settings.

Kelsey N. Tobin, Sandra Lizarraga, Rajendra Acharya, Apurba K. Barman, Brent D. Short, Angelita L. Acebes-Doria, and Monique J. Rivera "Comparison of ethanol-baited trap designs for ambrosia beetles in orchards in the eastern United States," Journal of Economic Entomology 117(4), 1476-1484, (28 June 2024). https://doi.org/10.1093/jee/toae145
Received: 24 April 2024; Accepted: 10 June 2024; Published: 28 June 2024
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KEYWORDS
ambrosia beetles
apple
monitoring
pecan
Scolytinae
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