Cerrar

No. de sistema: 000040082

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 180523m20189999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx---
044 _ _ a| xx
245 0 0 a| Geographic variation in pheromone component ratio and antennal responses, but not in attraction, to sex pheromones among Fall armyworm populations infesting corn in Mexico
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| The fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), is one of the most important pests of corn in Latin America. This insect presents two strains with behavioural and genetic differences. In Mexico, both strains are present, and at least two different FAW populations have been reported within the corn-strain. The objective of this study was to gather evidence of whether pheromonal communication varies among different S. frugiperda populations infesting corn in Mexico. First, we investigated any qualitative or quantitative difference in the composition of sex pheromones among populations; second, we studied whether male antennal responses to pheromone components vary among populations; and, finally, we investigated whether males from a region can discriminate between a synthetic pheromone blend characteristic of their region and blends formulated with the ratio of pheromone compounds emitted by females from other populations. Sex pheromone components were sampled by solid-phase microextraction and identified by gas chromatography coupled to mass spectrometry. Females from all populations consistently released three compounds: (Z)-9-tetradecenyl acetate (Z9-14:OAc), (Z)-11-hexadecenyl acetate (Z11-16:OAc) and (Z)-7-dodecenyl acetate (Z7-12:OAc). Our results showed that Z9-14:OAc and Z7-12:OAc evoked the highest and most variable antennal responses among the populations studied compared to Z11-16:OAc. However, males did not discriminate between local pheromone blends and those formulated from other populations in a field test. These results show that although there is geographic variation in the ratio of pheromone components and in the peripheral reception of them, males were not differentially attracted to different pheromone blends in the field.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Spodoptera frugiperda
650 _ 4 a| Maíz
650 _ 4 a| Feromonas sexuales de insectos
650 _ 4 a| Plagas agrícolas
651 _ 4 a| México
700 1 _ a| Cruz Esteban, Samuel
n| 57190046428
700 1 _ a| Rojas, Julio C.
e| coaut.
700 1 _ a| Sánchez Guillén, Daniel
e| coaut.
700 1 _ a| Cruz López, Leopoldo Caridad
c| Dr.
e| coaut.
700 1 _ a| Malo Rivera, Edi Álvaro
c| Doctor
e| coaut.
773 0 _
t| Journal of Pest Science
g| Vol. 91, no. 3 (June 2018), p. 973–983
x| 1612-4758
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo sin arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Mayo 2018
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
Cerrar
*Solicítelo con su bibliotecario/a
Geographic variation in pheromone component ratio and antennal responses, but not in attraction, to sex pheromones among Fall armyworm populations infesting corn in Mexico
Cruz Esteban, Samuel (autor)
Rojas, Julio C. (autor)
Sánchez Guillén, Daniel (autor)
Cruz López, Leopoldo Caridad (autor)
Malo Rivera, Edi Álvaro (autor)
Nota: Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Journal of Pest Science. Vol. 91, no. 3 (June 2018), p. 973–983. ISSN: 1612-4758
No. de sistema: 40082
Tipo: - Artículo sin arbitraje
PDF
  • Consulta (1)




Inglés

"The fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), is one of the most important pests of corn in Latin America. This insect presents two strains with behavioural and genetic differences. In Mexico, both strains are present, and at least two different FAW populations have been reported within the corn-strain. The objective of this study was to gather evidence of whether pheromonal communication varies among different S. frugiperda populations infesting corn in Mexico. First, we investigated any qualitative or quantitative difference in the composition of sex pheromones among populations; second, we studied whether male antennal responses to pheromone components vary among populations; and, finally, we investigated whether males from a region can discriminate between a synthetic pheromone blend characteristic of their region and blends formulated with the ratio of pheromone compounds emitted by females from other populations. Sex pheromone components were sampled by solid-phase microextraction and identified by gas chromatography coupled to mass spectrometry. Females from all populations consistently released three compounds: (Z)-9-tetradecenyl acetate (Z9-14:OAc), (Z)-11-hexadecenyl acetate (Z11-16:OAc) and (Z)-7-dodecenyl acetate (Z7-12:OAc). Our results showed that Z9-14:OAc and Z7-12:OAc evoked the highest and most variable antennal responses among the populations studied compared to Z11-16:OAc. However, males did not discriminate between local pheromone blends and those formulated from other populations in a field test. These results show that although there is geographic variation in the ratio of pheromone components and in the peripheral reception of them, males were not differentially attracted to different pheromone blends in the field."


  • Adobe Acrobat profesional 6.0 o superior