Abstract
Male Nezara viridula emit a volatile sex pheromone that acts as a long-range attractant to females. Both sexes communicate through vibrations once they are on the same plant. Males respond to the female calling song by emitting a male courtship song, and they orient to the female calling song on a plant. Simultaneity between vibratory and chemical communication during the last steps of mate finding suggests that pheromone emission might be modulated by signals from conspecifics. Male volatile emissions were collected with fibers for solid-phase microextraction, while male bugs were stimulated with natural and artificial signals. Percentages of males releasing pheromone and collected amounts of pheromone increased when males were stimulated with female calling song. Pheromone emission was stable in males stimulated with male rivalry songs, and it decreased in males stimulated with a 100-Hz artificial signal. The ability of male bugs to modulate their pheromone emission may reduce metabolic costs, reduce parasitism, and offer a better synchronization of sexual activity.
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Miklas, N., Lasnier, T. & Renou, M. Male Bugs Modulate Pheromone Emission in Response to Vibratory Signals from Conspecifics. J Chem Ecol 29, 561–574 (2003). https://doi.org/10.1023/A:1022898620429
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DOI: https://doi.org/10.1023/A:1022898620429