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; Rojas, Julio C.; Sánchez-Guillén, Daniel; Cruz‐López, Leopoldo; Malo, Edi A.

doi:10.1007/s10340-018-0967-z

Cited by 29 publications

(20 citation statements)

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“…A possibility to explain this contradiction is that we used a higher percentage of Z11-16:OAc in the tertiary blend compared to previous studies. However, Cruz-Esteban et al (2018) found that a similar percentage of Z11-16:OAc in the tertiary blend did not affect the males caught in the same region that we performed the present study. Unfortunately, the binary blend of Z7-12:OAc and Z9-14:OAc was not included in the study of Cruz-Esteban et al (2018).…”

Section: Discussionsupporting

confidence: 47%

“…However, Cruz-Esteban et al (2018) found that a similar percentage of Z11-16:OAc in the tertiary blend did not affect the males caught in the same region that we performed the present study. Unfortunately, the binary blend of Z7-12:OAc and Z9-14:OAc was not included in the study of Cruz-Esteban et al (2018). The compound Z11-16:OAc was found in the effluvia of calling females from 22 regions of Mexico .…”

Section: Discussionsupporting

confidence: 47%

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A pheromone lure for catching fall armyworm males (Lepidoptera: Noctuidae) in Mexico

Cruz‐Esteban

Rojas

Malo

2020

AZM

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2020) A pheromone lure for catching fall armyworm males (Lepidoptera: Noctuidae) in Mexico. Acta Zoológica Mexicana (nueva serie), 36, 1-11.ABSTRACT. Moth sex pheromones can be used for monitoring or for control (e.g., mass trapping or mating disruption) of agricultural pests. However, pheromone application in field conditions requires that all crucial pheromonal components are included and optimized in a pheromone lure. In this study, we optimized a sex pheromone lure for monitoring Mexican populations from the fall armyworm (FAW), Spodoptera frugiperda Smith. In corn fields, we evaluated the activity of single compounds, three binary blends, and one tertiary blend of (Z)-7-dodecenyl acetate (Z7-12:OAc), (Z)-9-tetradecenyl acetate (Z9-14:OAc), and (Z)-11-hexadecenyl acetate (Z11-16:OAc). The results showed that the traps baited with a binary blend of Z7-12:Ac + Z9-14:Ac captured significantly more S. frugiperda males than single compounds, other binary blends or the tertiary blend. The absence of Z11-16:OAc in the blends did not significantly affect the capture of males, indicating that this compound is non-essential for male attraction in the field. We demonstrated that the dose of the binary blend of Z7-12:OAc and Z9-14:OAc influenced the catch rate of FAW males. The pheromone lure optimized in this study can be useful for capturing S. frugiperda in Mexico. Cruz-Esteban, S., Rojas, J. C., Malo, E. A. (2020) Feromona para la captura de machos del gusano cogollero (Lepidoptera: Noctuidae) en México. Acta Zoológica Mexicana (nueva serie), 36, 1-11. https://doi.org/10.21829/azm.2020.3612271 RESUMEN. Las feromonas sexuales de palomillas se pueden usar para monitoreo o control de plagas agrícolas (por ejemplo, trampeo masivo o interrupción del apareamiento). Sin embargo, la aplicación de feromonas en condiciones de campo requiere que los componentes feromonales activos estén incluidos y optimizados como un cebo feromonal. En este estudio, preparamos un señuelo con la feromona sexual para Cruz-Esteban et al.: Feromona sexual para atracción y captura de Spodoptera frugiperda 2 monitorear las poblaciones mexicanas del gusano cogollero, Spodoptera frugiperda (J. E. Smith).Evaluamos la actividad de compuestos individuales, tres mezclas binarias y una mezcla terciaria de (Z)-7dodecenil acetato (Z7-12: OAc), (Z)-9-tetradecenil acetato (Z9-14: OAc) y acetato de (Z)-11-hexadecenilo (Z11-16: OAc), en cultivos de maíz. Los resultados mostraron que las trampas cebadas con una mezcla binaria de Z7-12: Ac + Z9-14: Ac capturaron significativamente más machos de S. frugiperda que los compuestos individuales, y que las otras mezclas binarias o la mezcla terciaria. La ausencia de Z11-16: OAc en la mezcla no afectó significativamente la captura de machos, lo que indica que este compuesto no es esencial para la atracción de machos en el campo. Encontramos que la dosis de la mezcla binaria de Z7-12:OAc y Z9-14:OAc influyó en la tasa de captura de machos del gusano cogollero. El señuelo de feromona optimizado en este estudio puede ser út...

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Section: Discussionsupporting

confidence: 47%

Section: Discussionsupporting

confidence: 47%

A pheromone lure for catching fall armyworm males (Lepidoptera: Noctuidae) in Mexico

Cruz‐Esteban

Rojas

Malo

2020

AZM

Self Cite

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“…Our findings of geographic differences in H. armigera male response are important for the development of region‐specific lures . For example, using 6% of Z9‐16:Ald instead of 1.4–4% of Z9‐16:Ald in synthetic pheromone lures is probably more effective in monitoring and controlling H. armigera populations in Australia.…”

Section: Discussionmentioning

confidence: 80%

“…Geographic variation in male response to pheromone lures has been studied in the field in a number of species . However, only a few studies have investigated geographic variation in female calling and sex pheromone release under natural conditions in the field, i.e.…”

Section: Introductionmentioning

confidence: 99%

Geographic variation in sexual communication in the cotton bollworm, Helicoverpa armigera

Gao

Torres‐Vila²,

Zalucki

et al. 2020

Pest Management Science

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BACKGROUND: Geographic variation in male response to sex pheromone lures has been studied in the field in a number of moth species. However, only a few studies have investigated geographic variation in female calling and sex pheromone under field conditions. For an effective field implementation of sex pheromone lures, it is essential to know the local sex pheromone blend and local timing of sexual communication. We investigated the level and extent of geographic variation in the sexual communication of the important agricultural pest Helicoverpa armigera (Lepidoptera, Noctuidae) in three continents. RESULTS: We found there is no genetic variation in the calling behavior of H. armigera. In the female sex pheromone, we found more between-population variation than within-population variation. In male response experiments, we found geographic variation as well. Strikingly, when adding the antagonistic compound Z11-16:OAc to the pheromone blend of H. armigera, significantly fewer males were caught in Australia and China, but not in Spain. This variation is likely not only due to local environmental conditions, such as photoperiod and temperature, but also to the presence of other closely related species with which communication interference may occur. Conclusion: Finding geographic variation in both the female sexual signal and the male response in this pest calls for regionspecific pheromone lures. Our study shows that the analysis of geographic variation in moth female sex pheromones as well as male responses is important for effectively monitoring pest species that occur around the globe.

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“…This is usually due to variations in the proportions of the components, although the secondary constituents are not always the same (Descoins et al, 1988;Batista-Pereira et al, 2006). Responses of males to sex pheromone differ between geographically distant populations (Mitchell et al, 1985;Andrade et al, 2000;Malo et al, 2001;Batista-Pereira et al, 2006;Unbehend et al, 2014) although this is not the case within Mexico (Cruz-Esteban et al, 2018). Few studies on differences in sex pheromone composition respect to S. frugiperda host strain were carried out and some differences were found (Groot et al, 2008;Cruz-Esteban et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of sex pheromone formulations to attract Spodoptera frugiperda (Lepidoptera: Noctuidae) adult males in Argentina

Bratovich¹,

Saluso²,

Murúa³

et al. 2019

Rev. Soc. Entomol. Arg.

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Evaluación de formulaciones de feromona sexual para la atracción de machos de Spodoptera frugiperda (Lepidoptera: Noctuidae) en Argentina RESUMEN. Spodoptera frugiperda (Smith) es la plaga más importante del maíz en Argentina. En América su monitoreo se realiza con trampas cebadas con feromona sexual femenina sintética. Tal monitoreo tiene éxito variable, principalmente, porque la composición de la feromona sexual de poblaciones de áreas geográficas distantes es diferente y no se ha desarrollado un cebo sintético específico para cada área. Se desconoce la composición de la feromona sexual de las poblaciones encontradas en Argentina. El objetivo de este trabajo fue probar un cebo comercial (Hercon) y tres formulaciones experimentales (ChemTica) de la feromona, para establecer si alguna de esas formulaciones es mejor que la que se usa actualmente en el país (es decir, el comercial ChemTica). La atracción por las feromonas sintéticas se probó en un túnel de viento utilizando machos de diferentes regiones de Argentina. Además, se realizaron pruebas de campo en dos regiones distantes del país. Una de las formulaciones experimentales de ChemTica y la formulación comercial de Hercon provocaron la mayor atracción en las pruebas de túnel de viento. En las pruebas de campo, solo el cebo de Hercon capturó un número significativo de machos. Por lo tanto, si bien se hallaron cebos que evocan mayor atracción que el cebo comercial de ChemTica, la atracción y la captura, incluso con esos cebos, no alcanzaron valores altos. PALABRAS CLAVE. Cebo de olor. Manejo de plagas. Monitoreo. Plaga de cultivo. Túnel de viento. ABSTRACT. Spodoptera frugiperda (Smith) is the most important pest of corn in Argentina. Its monitoring in the Americas is carried out by traps lured with a synthetic version of its female sex pheromone. Such monitoring has variable success mainly because the composition of the sex pheromone of populations from distant geographical areas is different, and a synthetic lure has not been developed for each area. The composition of the sex pheromone of the populations found in Argentina is not known. The objective of this work was to test one commercial (Hercon lure) and three experimental formulations (from the manufacturer ChemTica) of the pheromone to establish if any of those formulations is better than the www.biotaxa.org/RSEA.

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Geographic variation in pheromone component ratio and antennal responses, but not in attraction, to sex pheromones among fall armyworm populations infesting corn in Mexico

Cited by 29 publications

References 45 publications

A pheromone lure for catching fall armyworm males (Lepidoptera: Noctuidae) in Mexico

A pheromone lure for catching fall armyworm males (Lepidoptera: Noctuidae) in Mexico

Geographic variation in sexual communication in the cotton bollworm, Helicoverpa armigera

Evaluation of sex pheromone formulations to attract Spodoptera frugiperda (Lepidoptera: Noctuidae) adult males in Argentina

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