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      Attractiveness of fruit and flower odorants detected by olfactory receptor neurons in the fruit chafer Pachnoda marginata.

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          Abstract

          We studied the attraction of the African fruit chafer Pachnoda marginata Drury (Coleoptera: Scarabaeidae) to banana and 34 synthetic plant compounds previously shown to be detected by P. marginata olfactory receptor neurons. The behavioral studies were carried out in a two-choice olfactometer, where the attraction of beetles to lures and controls was monitored in 30-min intervals during whole days. Monitoring of the attraction over time gave additional information when comparing relative attractiveness of different compounds. Seventeen of the test compounds, primarily phenylic compounds, fruit esters, isovaleric acid, acetoin, and some floral or fruit terpenes, were attractive to P. marginata. Compounds showing no attractiveness included green leaf volatiles, lactones. and several alcohols, but also phenylic compounds and esters. One case of blend synergism was demonstrated, as well as some examples of sexual dimorphism in attraction. The significance of certain compounds and receptor neurons for olfactory-guided behavior of phytophagous scarabs is discussed.

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          Author and article information

          Journal
          J Chem Ecol
          Journal of chemical ecology
          Springer Science and Business Media LLC
          0098-0331
          0098-0331
          May 2003
          : 29
          : 5
          Affiliations
          [1 ] Department of Crop Science, Chemical Ecology, Swedish University of Agricultural Sciences SE-230 53 Alnarp, Sweden.
          Article
          10.1023/a:1023893926038
          12857034
          cb90ca28-77cd-4a15-ace9-76f7c78611af
          History

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