| Title: | "Identification of the Alarm Pheromone of Cowpea Aphid, and Comparison With Two Other Aphididae Species" |
| Author(s): | Bayendi Loudit SM; Boullis A; Verheggen F; Francis F; |
| Address: | "Functional & evolutionary entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium. Institut de Recherches Agronomiques et Forestieres, Libreville, Gabon" |
| ISSN/ISBN: | 1536-2442 (Electronic) 1536-2442 (Linking) |
| Abstract: | "In response to a predator attack, many Aphidinae species release an alarm pheromone, which induces dispersal behavior in other individuals within the colony. The major component of this pheromone is the sesquiterpene (E)-beta-farnesene (Ebetaf), but variations occur between aphid species. In the present work, we collected, identified, and quantified the alarm pheromone of Aphis craccivora Koch (Hemiptera: Aphididae), before quantifying the escape behavior induced in the neighboring individuals. We compared the semiochemistry and associated behavior of alarm signaling with two other aphid species: Myzus persicae (Sulzer) (Hemiptera: Aphididae) and Aphis fabae Scopoli (Hemiptera: Aphididae). Ebetaf was the only volatile found for each species. M. persicae produces a higher quantity of Ebetaf (8.39 +/- 1.19 ng per individual) than A. craccivora (6.02 +/- 0.82 ng per individual) and A. fabae (2.04 +/- 0.33 ng per individual). Following exposure to natural doses of synthetic Ebetaf (50 ng and 500 ng), A. craccivora respond more strongly than the two other Aphidinae species with 78% of the individuals initiated alarm behavior for 500 ng of Ebetaf" |
| Keywords: | "Animal Communication Animals Aphids/*chemistry Behavior, Animal Pheromones/*analysis Sesquiterpenes/*analysis Volatile Organic Compounds/analysis (E)-beta-farnesene aphid behavior escape;" |
| Notes: | "MedlineBayendi Loudit, Sandrine Mariella Boullis, Antoine Verheggen, Francois Francis, Frederic eng 2018/01/05 J Insect Sci. 2018 Jan 1; 18(1):1. doi: 10.1093/jisesa/iex097" |
