Identification of the female-produced sex pheromone of Tischeria ekebladella, an oak leafmining moth.

作者: Béla Péter Molnár , Armin Tröger , Theodora B. Toshova , Mitko Subchev , Erik J. van Nieukerken

DOI: 10.1007/S10886-012-0184-9

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摘要: The native leafmining moth Tischeria ekebladella (Lepidoptera: Tischeriidae) feeds on oaks and recently has become a pest of silviculture urban green areas in central Europe. behavioral responses male moths to hexane extracts whole bodies calling females or males were tested under laboratory conditions. Only elicited from males. Analysis by coupled gas chromatography/electroantennographic detection revealed the presence two electroantennogram-active peaks. Structure elucidation these compounds, gas-chromatography/mass spectrometry independent synthesis them be (3Z,6Z,9Z)-tricosa-3,6,9-triene (3Z,6Z,9Z,19Z)-tricosa-3,6,9,19-tetraene. While triene was present both sexes, tetraene female-specific. latter is new structure for pheromone component Lepidoptera novel natural product. Field trapping tests, carried out mixed oak forest near Budapest (Hungary), using synthetic compounds applied rubber dispensers, showed that per se catches large numbers. When added ratio 1:1, there no increase trap catch; alone did not elicit For monitoring this insect, tetraene, dispensers at dose 300 μg, potent sex attractant.

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