Sex pheromone of orange wheat blossom midge, Sitodiplosis mosellana |
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| Authors: | Regine Gries G Gries Grigori Khaskin Skip King Owen Olfert Lori-Ann Kaminski Robert Lamb Robb Bennett |
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| Institution: | (1) Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada e-mail: gries @sfu.ca, CA;(2) Agriculture and Agri-Food Canada, Saskatoon Research Centre, Saskatoon, Saskatchewan S7N OX2, Canada, CA;(3) Agriculture and Agri-Food Canada, Cereal Research Centre, Winnipeg, Manitoba R3T 2M9, Canada, CA;(4) Ministry of Forests, Tree Improvement Branch, Saanichton, British Columbia V8M 1W4, Canada, CA |
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| 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.
Received: 2 March 2000 / Accepted in revised form: 18 August 2000 |
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