Chemical characterization and species specificity of sex pheromones of plusiinae moths in Israel

摘要: The female sex pheromones of four sympatric Plusiinae species, Autographa gamma, Chrysodeixis chalcites, Cornutiplusia circumflexa, and Trichoplusia ni were investigated in Israel. research concentrated on the behavioral reproductive isolation regulated by their pheromones. chemical composition was determined analysis pheromone gland extracts, addition entrained volatiles released from virgin C. chalcites T. also analyzed. these latter two species found to contain several components, among which Z7-12:Ac main one. glands A. gamma circumflexa relatively small amounts material only Z7–12:Ac Z7–12:OH could be positively identified. These components present roughly inverse rations. Whereas utilizes as or sole component, requires both Z7–12:Ac, with alcohol being predominant. This is first reported using component. Behavioral studies wind tunnel field tests indicate that females each a species-specific blend chemicals, consisting attractive antagonistic attract conspecific males. Such complementary strategy provides improved species. For example, Z5–12:Ac, specific component pheromone, may redundant regards attraction However, this compound blends resulted complete inhibition males' flight behavior trap catch; thus contributing significantly specificity pheromone. high proportion essential latter, highly inhinitory three other case cross-attraction occurred when males attracted certain extent lures females. © 1993 Wiley-Liss, Inc.