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Factors influencing the release of volatiles in Anastrepha obliqua males (Diptera: Tephritidae)

López Guillén, Guillermo | Cruz López, Leopoldo Caridad [autor/a] | Malo, Edi A [autor/a] | González Hernández, Héctor [autor/a] | Llanderal Cázares, Ma. Celina M [autor/a] | López Collado, José [autor/a].
Tipo de material: Artículo impreso(a) Artículo impreso(a) Tema(s): Anastrepha obliqua | Conducta animal | Compuestos volátiles | Producción del sonido por insectos | FrutosTema(s) en inglés: Anastrepha obliqua | Animal behavior | Volatile compounds | Sound production by insects | FruitsDescriptor(es) geográficos: Veracruz de Ignacio de la Llave (México) | Metapa de Domínguez, Metapa (Chiapas, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Environmental Entomology. volumen 37, número 4 (2008), páginas 876-882. --ISSN: 0046-225XNúmero de sistema: 3169Resumen:
Inglés

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)-α-farnesene, (Z,E)-α-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.
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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)-α-farnesene, (Z,E)-α-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. eng

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