Abstract
Pheromone extract of the female orange wheat blossom midge, Sitodiplosis mosellana (Géhin) (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, EAD-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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Received: 2 March 2000 / Accepted in revised form: 18 August 2000
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Gries, R., Gries, G., Khaskin, G. et al. Sex pheromone of orange wheat blossom midge, Sitodiplosis mosellana. Naturwissenschaften 87, 450–454 (2000). https://doi.org/10.1007/s001140050757
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DOI: https://doi.org/10.1007/s001140050757