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Identification of 1-methyloctyl butanoate as the major sex pheromone component from females of the saddle gall midge,Haplodiplosis marginata (Diptera: Cecidomyiidae) |
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| Authors: | Florence Censier Christophe Y. Fischer Sandrine Chavalle Stephanie Heuskin Marie-Laure Fauconnier Bernard Bodson Michel De Proft Georges C. Lognay Pascal Laurent |
| Affiliation: | 1. Crops Management Unit, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030, Gembloux, Belgium 2. Laboratory of Analytical Chemistry, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030, Gembloux, Belgium 3. Plant Protection and Ecotoxicology Unit, Life Sciences Department, Walloon Agricultural Research Centre, Balachowsky Building, Chemin de Liroux 2, 5030, Gembloux, Belgium 4. General and Organic Chemistry Unit, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030, Gembloux, Belgium 5. Unit of General Chemistry, Université Libre de Bruxelles, Route de Lennik, 808 CP 609, 1070, Brussels, Belgium |
| Abstract: | The saddle gall midge, Haplodiplosis marginata (von Roser) (Diptera: Cecidomyiidae), has undergone a resurgence recently as a pest of cereals in Belgium and other European countries. An effective monitoring tool of saddle gall midge flights is needed to understand the enigmatic population dynamics of this pest, and to design an integrated management strategy. Therefore, volatile compounds emitted by females (alkan-2-ols and alk-2-yl butanoates) were identified, and the chirality of the emitted esters was determined to be the R absolute configuration. In field-trapping experiments, racemic non-2-yl butanoate attracted substantial numbers of H. marginata males. Thus, this compound will be useful in baited traps for monitoring seasonal flight patterns, and improving integrated management of the saddle gall midge in agricultural systems. |
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