Environmental Entomology (2008) 37, 876-882

Guillermo López-Guillén, Leopoldo Cruz-López, Edi A. Malo, Hector González-Hernández, Celina Llanderal Cazares, José López-Collado, Jorge Toledo and Julio C. Rojas (2008)
Factors influencing the release of volatiles in Anastrepha obliqua males (Diptera: Tephritidae)
Environmental Entomology 37 (4), 876-882
Abstract: During sexual signaling, males of Anastrepha obliqua (Macquart) form leks and attract females by producing sounds and releasing volatile compounds. The objective of this study was to investigate the influence time of time of day, age, irradiation, mating status, and the presence of host fruit on the release of volatile components by laboratory-reared A. obliqua males. A. obliqua males released four compounds identified by gas chromatography coupled with mass spectrometry (GC-MS) as (E,E)-alpha-farnesene, (Z,E)-alpha-farnesene, (Z)-3-nonenol, and a farnesene isomer during calling behavior. Although males released volatiles during the entire day, the amount of volatiles was higher in the early morning and afternoon hours. Males began to emit volatiles when they were 6 d old, but only the amount of (Z)-3-nonenol was affected by age. Irradiation of flies with gamma rays from a ⁶⁰Co source at a dose rate of 0.8 Gy significantly reduced the amount of volatiles released during calling behavior. The amount of volatiles was lower in recently mated males than virgin males. However, there were no significant differences between virgin males and males 24 h after mating. The presence of host fruit did not affect the amount of volatiles compared with the control.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Leopoldo Cruz-López

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Anastrepha obliqua