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The parasitoidAphidius erviHaliday uses both semiochemical and physical cues to locate and recognize its main host, the pea aphidAcyrthosiphon pisum(Harris). In wind tunnel studies, it was demonstrated that plant volatiles, particularly those induced by aphid feeding, are important long-range cues in the initial stages of host location. Furthermore,A. ervidistinguished between plants damaged byAc...
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