Vista normal Vista MARC

Electrophysiological and behavioural responses of Scyphophorus acupunctatus (Col., Curculionidae) to Agave tequilana volatiles

Tipo de material: Artículo
 impreso(a) 
 Artículo impreso(a) Idioma: Inglés Tema(s): Formatos físicos adicionales disponibles:
  • Disponible en línea
En: Journal of Applied Entomology volumen 131, número 2 (Feb. 2007), páginas 121-127Resumen:
Inglés

The weevil Scyphophorus acupunctatus Gyllenhal (Col., Curculionidae) is the most important insect pest of cultivated agaves in Mexico. The objective of this study was to search for potential attractants for this weevil species from the freshly cut fleshy leaves of healthy Agave tequilana Weber var. Blue plants. Combined gas chromatography-electroantennography (GC-EAD) analysis of A. tequilana volatile extracts showed that seven peaks elicited antennal responses from males and females. Five of these peaks were identified by gas chromatography-mass spectrometry (GC-MS) as o-xylene, α-pinene, 3-carene, γ-terpinene and linalool. Electroantennogram (EAG) records of both sexes to 1-, 10- and 100-μg-stimulus load of these five compounds showed that there was a dose effect on the EAG responses for linalool, 3-carene and α-pinene, but not for γ-terpinene and o-xylene. There were no sexual differences between male and female EAG responses to any of the compounds tested. Y-tube olfactometer bioassays of the compounds showed that males and females were attracted to α-pinene, 3-carene, γ-terpinene and/or linalool at doses of 1 and 10 μg, while weevils were repelled by linalool at a dose of 100 μg.

Número de sistema: 2375
Lista(s) en las que aparece este ítem: Bibliografía DEAMP
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
Valoración
    Valoración media: 0.0 (0 votos)
Existencias
Tipo de ítem Biblioteca actual Colección Info Vol Estado Código de barras
Artículos Biblioteca Electrónica Recursos en línea (RE) ECOSUR Recurso digital ECO4000237523
Artículos Biblioteca Tapachula Artículos (AR) ECOSUR 001 Disponible 750527C2474-20

Disponible para usuarios de ECOSUR con su clave de acceso

The weevil Scyphophorus acupunctatus Gyllenhal (Col., Curculionidae) is the most important insect pest of cultivated agaves in Mexico. The objective of this study was to search for potential attractants for this weevil species from the freshly cut fleshy leaves of healthy Agave tequilana Weber var. Blue plants. Combined gas chromatography-electroantennography (GC-EAD) analysis of A. tequilana volatile extracts showed that seven peaks elicited antennal responses from males and females. Five of these peaks were identified by gas chromatography-mass spectrometry (GC-MS) as o-xylene, α-pinene, 3-carene, γ-terpinene and linalool. Electroantennogram (EAG) records of both sexes to 1-, 10- and 100-μg-stimulus load of these five compounds showed that there was a dose effect on the EAG responses for linalool, 3-carene and α-pinene, but not for γ-terpinene and o-xylene. There were no sexual differences between male and female EAG responses to any of the compounds tested. Y-tube olfactometer bioassays of the compounds showed that males and females were attracted to α-pinene, 3-carene, γ-terpinene and/or linalool at doses of 1 and 10 μg, while weevils were repelled by linalool at a dose of 100 μg. Inglés

Disponible en línea

Adobe Acrobat profesional 6.0 o superior