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Electroantennogram responses of fall webworms(Hyphantria cunea) to 55 host volatile compounds were conducted.Results showed that male moths were more responsive to trans-2-hexenyl acetate,nonanal,hexanal,trans-2-hexenal,hexanol,isoamyl acetate,acetic acid cis-3-hexenyl ester,ethyl acetoacetate,citronellal and(+)-citronellal,and females were more responsive to hexanol,hexanal,acetophenone,isoamyl acetate,nonanal,trans-2-hexenal,acetic acid cis-3-hexenyl ester,citronellal,cis-3-hexen1-ol and trans-2-hexen-1-ol.Seven bioactive compounds were also selected for further dosage response experiments,and a positive correlation was found between the fall webworm and the tested compounds.A maximum dosage level of 1000 g was tested and found to elicit significantly higher activity from male moths compared with lower(1,10,100 g) concentrations.
Results showed that male moths were more responsive to trans-2-hexenyl acetate, nonanal, hexanal, trans-2-hexenal, hexanol, isoamyl acetate, acetic acid cis-3-hexenyl ester, ethyl acetoacetate, citronellal and (+) - citronellal, and females were more responsive to hexanol, hexanal, acetophenone, isoamyl acetate, nonanal, trans-2-hexenal, citronellal, cis-3-hexen1-ol and trans-2-hexen-1-ol.Seven bioactive compounds were also selected for further dosage response experiments, and a positive correlation was found between the fall webworm and the tested compounds. A maximum dosage level of 1000 g was tested and found to elicit significantly higher activity from male moths compared with lower (1,10,100 g) concentrations.