Environmental Entomology (2009) 38, 1467-1479

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M.Y. Gruber, N. Xu, L. Grenkow, X. Li, J. Onyilagha, J.J. Soroka, N.D. Westcott and D.D. Hegedus (2009)
Responses of the crucifer flea beetle to Brassica volatiles in an olfactometer
Environmental Entomology 38 (5), 1467-1479
Abstract: A suite of commercially available volatile compounds was tested in an olfactometer bioassay for responses by the crucifer flea beetle (Phyllotreta cruciferae). Flea beetles were inhibited by exposure to hexane, pentane, and ethanol. Allyl-isothiocyanate, a crucifer-specific volatile, was moderately attractive to spring and early fall flea beetles, but inhibitory to late fall flea beetles. Spring flea beetles were most attracted to ( + )-sabinene and E-ß-ocimene, and 1-hexanol, 1-pentanol, and Z-3-hexen-1-ol were stronger attractants than allyl-isothiocyanate. Spring beetles were strongly inhibited by ( - )-E-caryophyllene, ß-ionone, indole, ( ± )-linalool, ( + )-limonene, E-geraniol, and ( - ) -ß-pinene and moderately inhibited by ( - ) -verbenene and hexenal. Our study showed that older leaves and flowers of Brassica napus variety AC Excel contained small amounts of ß-ionone, but seedlings did not. ß-Ionone has not been documented previously in B. napus.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Margaret Y. Gruber, Juliana J. Soroka

Research topic(s) for pests/diseases/weeds:

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Phyllotreta cruciferae Rape/canola (Brassica napus) Canada (west)