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Behavioral Responses of the Potato Psyllid (Hemiptera: Triozidae) to Volatiles from Dimethyl Disulfide and Plant Essential Oils
- Diaz-Montano, John, Trumble, John T.
- Journal of insect behavior 2013 v.26 no.3 pp. 336-351
- Bactericera cockerelli, Hemiptera, Mentha piperita nothosubsp. piperita, Triozidae, adults, clove oil, longevity, oils, residual effects, savory, tea, thyme, trees, wood
- The behavioral responses of the potato psyllid, Bactericera cockerelli (Sulc) to dimethyl disulfide (DMDS) and to 12 plant essential oils were examined in a glass Y-tube olfactometer. DMDS at doses of 0.5, 1, 2 and 5 g showed a significant repellent effect on the psyllids. Cedar wood, lime, savory, thyme and tea tree oils significantly repelled adults over a wide range of doses tested (1, 10, 100, 500, 1,000 and 2,000 μl). The oils of clove and peppermint also had a significant repellent effect on adults at all doses except at the lowest dose (1 μl). The residual effect of 1 g of DMDS persisted for 10 consecutive days whereas five oils (thyme, tea tree, peppermint, savory and clove) remained repellent for the 20-day longevity residual trial.