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We used the electroantennogram (EAG) technique to compare the antennal sensitivity of both sexes of the giant swallowtail butterfly, Papilio cresphontes to four doses (1, 10, 100, and 1,000 μg) of the leaf essential oils of Zanthoxylumclava-herculis and Ptelea trifoliata (key host plants) and Sassafras albidum (a marginal or non-host plant). The main hypothesis tested was that P.cresphontes will...
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