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Coupled GC-EAG with summer morph of the lettuce aphid, N. ribis-nigri. (Upper) GC of volatiles from black currant, R. nigrum. (Lower) Simultaneous EAG response of N. ribis-nigri. Compounds eliciting major EAG responses (in order of elution) are: 1, 5-methylfurfural; 2, 1-octen-3-ol; 3, β-pinene; 4, chrysanthenone; 5, methyl salicylate; 6, (Z)-jasmone; 7, caryophyllene; 8, (E)-β-farnesene. A = peak from (Z)-jasmone.
