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Evidence of a female sex pheromone in Bradysia odoriphaga (Diptera: Sciaridae)

  • Hong-Jun Li (a1), Xiong-Kui He (a1), Ai-Jun Zeng (a1), Ya-Jia Liu (a1) and Shu-Ren Jiang (a1)...


The existence of a sex pheromone of Bradysia odoriphaga Yang and Zhang was investigated prior to the possible development of a semiochemical-based monitoring system or tools for controlling this pest. In laboratory bioassays, live virgin females stimulated 91% of males to attempt to mate. Methylene dichloride washes of whole bodies and excised ovipositors of females attracted males in olfactometer assays. These results indicate the presence of a female sex pheromone in B. odoriphaga, with the ovipositor as its possible source.

Nous avons recherché l’existence d’une phéromone sexuelle chez Bradysia odoriphaga Yang et Zhang afin de pouvoir éventuellement mettre au point un système de surveillance basé sur les composés sémiochimiques et développer des outils de lutte contre ce ravageur. Dans des bioessais en laboratoire, les femelles vierges vivantes stimulent 91 % des mâles à tenter un accouplement. Lors de tests avec un olfactomètre, les liquides de lavages au dichlorure de méthylène de corps entiers de femelles et d’ovipositeurs disséqués attirent les mâles. Ces résultats indiquent la présence d’une phéromone sexuelle femelle chez B. odoriphaga, dont la source possible est l’ovipositeur.

[Traduit par la Rédaction]


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