Sex pheromone of orange wheat blossom midge, Sitodiplosis mosellana
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| Authors: | Gries, R; Gries, G; Khaskin, G; King, S; Olfert, O; Kaminski, LA; Lamb, R; Bennett, R |
| Year: | 2000 |
| Journal: | Naturwissenschaften 87: 450-454 |
| Title: | Sex pheromone of orange wheat blossom midge, Sitodiplosis mosellana |
| Abstract: | Pheromone extract of the female orange wheat blossom midge, Sitodiplosis mosellana (Gehin) (SM) (Diptera: Cecidomyiidae), was analyzed by coupled gas chromatographic-electroantennographic detection (GC-EAD) and GC-mass spectrometry (MS), employing fused silica columns coated with DB-5, DB-210, DB-23 or SP-1000. These analyses revealed a single, LAD-active candidate pheromone which was identified as 2,7-nonanediyl dibutyrate. In experiments in wheat fields in Saskatchewan, traps baited with (2S,7S)-2,7-nonanediyl dibutyrate attracted significant numbers of male SM. The presence of other stereoisomers did not adversely affect trap captures. Facile synthesis of stereoisomeric 2,7-nonanediyl dibutyrate will facilitate the development of pheromone-based monitoring or even control of SM populations. |
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