| Title: | "Identification of walnut husk (Juglans regia L.) volatiles and the behavioural response of the invasive Walnut Husk Fly, Rhagoletis completa Cresson" |
| Author(s): | Sarles L; Boullis A; Fassotte B; Lognay G; Verhaeghe A; Francis F; Verheggen FJ; |
| Address: | "Universite de Liege - Gembloux Agro-Bio Tech, Entomologie Fonctionnelle et Evolutive, Gembloux, Belgium. Universite de Liege - Gembloux Agro-Bio Tech, Laboratoire de Chimie Analytique, Gembloux, Belgium. Centre Technique Interprofessionnel des Fruits et Legumes, Chatte, France" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Several European countries are important walnut (Juglans regia L.) producers. However, these countries must contend with the recent introduction of the Walnut Husk Fly, Rhagoletis completa Cresson (Diptera, Tephritidae), which is causing severe economic losses, especially in organic production. Because most Tephritid fruit flies use kairomones in their search for host plants, we hypothesise that this highly specialist species orients toward the volatile blend released by walnut husks. RESULTS: We collected, identified, and quantified the volatile organic chemicals (VOCs) released by walnut husks from the most commonly cultivated variety in France (Franquette). Then, the behavioural response of R. completa toward synthetic odour blends was recorded in dual choice assays conducted in net cages. A total of 26 VOCs were identified, with alpha-pinene, beta-pinene, trans-linalool, eugenol, and tetradecane representing the major constituents. In the dual choice assay, male and female R. completa were strongly attracted to synthetic blend that included most of the identified husk VOCs. CONCLUSION: When searching for a host plant, R. completa use host fruit kairomones. The potential of these semiochemicals in monitoring and management of this quarantine pest is discussed. (c) 2017 Society of Chemical Industry" |
| Keywords: | Animals *Chemotaxis Female France Juglans/*chemistry Male Pheromones/*pharmacology Seeds/chemistry Tephritidae/*drug effects/physiology Volatile Organic Compounds/*pharmacology fruit flies integrated pest management volatile organic compounds walnuts; |
| Notes: | "MedlineSarles, Landry Boullis, Antoine Fassotte, Berenice Lognay, Georges Verhaeghe, Agnes Francis, Frederic Verheggen, Francois J eng England 2017/04/05 Pest Manag Sci. 2017 Oct; 73(10):2100-2104. doi: 10.1002/ps.4584. Epub 2017 May 6" |
