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The behavioral response of ants to the adult of coffee berry borer (CBB) was studied in laboratory condition. The observed ants were seven dominant ant species collected from coffee plantations in northern Thailand i.e. Anoplolepis gracilipes, Camponotus nicobarensis, Crematogaster sp. PM2, Dolichoderus sp. PM1, Tapinoma sp. PM1, Technomyrmex modiglianii and Technomyrmex yamanei. The following ant behaviors against CBB were recorded in the laboratory: 1) Antennal contacting, 2) Attacking, and 3) Carrying. All species attacked CBB and some the species also carried the CBB. However, no ant species fed on the CBB. The CBB got damaged if ants intensively attacked or if they were grasped for carrying. A. gracilipes and C. nicobarensis were less aggressive against CBB, while Dolichoderus sp. PM1 and Tapinoma sp. PM1 seemed to be the more effective biological control agents for CBB.
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