title: Response to conspecific and heterospecific semiochemicals by Sesamia nonagrioides (L.) (Lepidoptera: Noctuidae) gravid females.
abstract: The Mediterranean corn borer, Sesamia nonagrioides, occurs sympatrically in the northeast of Spain with other lepidopteran pests such as Ostrinia nubilalis and Mythimna unipuncta. In this study, we evaluated the electrophysiological and behavioural response of mated and unmated females and males of S. nonagrioides to their own complete pheromone blend, to its own four components separately, and to the pheromone components of the sympatric species O. nubilalis and M. unipuncta. Results of the electroantennogram recordings revealed that females of S. nonagrioides can detect their own pheromone blend and its individual components. Moreover, our results show that unmated females and males of S. nonagrioides are more sensitive to the female pheromone, showing higher electrophysiological response than the mated females and males. Electroantennogram recordings showed that males and females can detect the major sexual pheromone component of O. nubilalis (Z)-11-tetradecenyl acetate and the minor component of the pheromone of M. unipuncta (Z)-9-hexadecenyl acetate. When the sex pheromone stimulus was presented in the dual-choice assays, gravid females of S. nonagrioides were attracted to both their own complete pheromone blend and one of their own minor pheromone components, (Z)-11-hexadecenal, but the major sexual pheromone component of O. nubilalis acts as a behavioural antagonist to the females.
authors: Department of Crop and Forest Sciences,Agrotecnio Center,University of Lleida,Rovira Roure 191,25198 Lleida,Spain.
authors: D
authors: D
authors: Cruz
authors: Department of Crop and Forest Sciences,Agrotecnio Center,University of Lleida,Rovira Roure 191,25198 Lleida,Spain.
authors: M
authors: M
authors: Eizaguirre
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D057506:Arthropod Antennae / Q000187:drug effects*; D002755:Choice Behavior / Q000187:drug effects; D005073:Evoked Potentials, Somatosensory; D005260:Female; D008297:Male; D009036:Moths / Q000187:drug effects / Q000378:metabolism*; D010675:Pheromones / Q000494:pharmacology*; D012737:Sex Factors; D012726:Sexual Behavior, Animal / Q000187:drug effects*; D013030:Spain; D013045:Species Specificity
chemical_list: D010675:Pheromones
keywords: electroantennogram; female; inter-intraspecific pheromones response; olfactometer