Journal of Chemical Ecology

, Volume 10, Issue 9, pp 1325-1333

Response of Colorado potato beetles,Leptinotarsa decemlineata (Say), to volatile components of tansy,Tanacetum vulgare

  • Oksana PanasiukAffiliated withU.S. Department of Agriculture, Eastern Regional Research Center Agricultural Research Service

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The responses of Colorado potato beetle,Leptinotarsa decemlineata (Say), to volatile components of tansy,Tanacetum vulgare L., were investigated in order to establish a chemical basis for observed reduction in beetle populations when potatoes,Solanum tuberosum L., were interplanted with tansy. Colorado potato beetles exhibited avoidance behavior to tansy oil, volatiles from intact tansy plants, a “hydrocarbon fraction” of tansy oil, obtained by fractionation on alumina, and five of the 13 known components of tansy oil that were tested. One constituent of tansy oil, α-pinene, attracted beetles.

Key words

Colorado potato beetle Leptinotarsa decemlineata Coleoptera Chrysomelidae tansy Tanacetum vulgare potato Solanum tuberosum interplanting volatile compounds insect attractance insect avoidance