Masking of host plant odour in the olfactory orientation of the Colorado potato beetle
1986
Thiery, D. | Visser, J.H.
The odour of potato plants Solanum tuberosum L., elicits a true odour-conditioned positive anemotaxis in the Colorado potato beetle, Leptinotarsa decemlineata Say. Blending the odour of non-host plant species, namely wild tomatoes Lycopersicon hirsutum f. glabratum C.H. Mull or cabbage Brassica oleracea L. var. gemmifera DC., with the attractive host plant odour blocks the release of upwind responses in non-experienced as well as experienced females. The neutralization of the beetle's orientation responses is obtained without repellency. It is expected that masking of host plant odour occurs often in mixed cropping systems.
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