Synergism and redundancy in a plant volatile blend attracting grapevine moth females

Grapevine moth females flew upwind to a blend of β-caryophyllene, (E)-β-farnesene and (E)-4,8-dimethyl-1,3,7-nonatriene. Leaving out any compound from this blend almost abolished attraction. Substituting these three compounds with other grape volatiles, which are perceived by the female antenna, partly restored attraction.