Publications by year

<embed>

Publications by Authors

entomology authors

Recent Publications

Contact Us

The Department of Entomology
The Robert H. Smith Faculty of Agriculture, Food and Environment
The Hebrew University of Jerusalem
P.O Box 12, Rehovot 76100, ISRAEL

Tel: 08-9489223 
Fax: 08-9366768
Email: orlytal@savion.huji.ac.il

Diel rhythm of volatile emissions of males and females of the peach fruit fly Bactrocera zonata

Citation:

Levi-Zada, A. ; Levy, A. ; Rempoulakis, P. ; Fefer, D. ; Steiner, S. ; Gazit, Y. ; Nestel, D. ; Yuval, B. ; Byers, J. A. Diel rhythm of volatile emissions of males and females of the peach fruit fly Bactrocera zonata. Journal of Insect Physiology 2020, 120.

Abstract:

Fruit flies in the genus Bactrocera are among the most destructive insect pests of fruits and vegetables throughout the world. A number of studies have identified volatiles from fruit flies, but few reports have demonstrated behavioral effects or sensitivities of fly antennae to these compounds. We applied a recently developed method of automated headspace analysis using SPME (Solid Phase Microextraction) fibers and GC–MS (gas chromatography mass spectrometry), termed SSGA, to reveal volatiles specific to each sex of B. zonata that are emitted in a diel periodicity. The volatiles released primarily at dusk were identified by GC–MS and chemical syntheses as several spiroacetals, pyrazines, and ethyl esters. Solvent extraction of male rectal glands or airborne collections from each sex, followed by GC–MS, showed that certain of the volatiles increase or decrease in quantity sex-specifically with age of the flies. Electroantennographic (EAG) analysis of dose-response indicates differences in sensitivities of male and female antenna to the various volatiles. Our study provides a comprehensive analysis of the volatile chemicals produced and released by B. zonata and their antennal responses. The possible pheromone and semiochemical roles of the various volatiles released by each sex and the difficulties of establishing behavioral functions are discussed. © 2019 Elsevier Ltd

Website