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A blend of four volatile compounds, (Z)‐3‐hexene‐1‐yl acetate, α‐pinene, sabinene and n‐heptanal, emitted from cabbage plants infested by diamondback moth (DBM) larvae (hereafter called the attractant) attract females of Cotesia vestalis, a dominant parasitoid wasp species of DBM larvae. Here, we tested the effects of the presence of uninfested komatsuna (Brassica rapa var. perviridis L. cv. Rakuten)...
The host-searching behavior of Diadegma semiclausum, a parasitoid of diamondback moth (DBM) larvae, was studied in a wind tunnel. Wasps flew preferentially to a cabbage plant, freshly infested by 1 DBM larva, or one freshly infested by 10 DBM larvae, than to an intact plant. There was no significant difference between wasps’ responses to plants infested by different DBM larvae densities. We also found...
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