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Gymnandrosoma aurantianum (Lepidoptera: Tortricidae): Calling Rhythm and Effect of Age on Female Sex Pheromone Titer and Male Antennal Responses

  • Ecology, Behavior and Bionomics
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Abstract

The macadamia nut borer, Gymnandrosoma aurantianum Lima (Lepidoptera: Tortricidae), is the main pest of Macadamia integrifolia Maiden & Betche (Proteales: Proteaceae) in Central America. Despite its importance, there is little information on its reproductive behavior. We studied the calling behavior and effect of age on female sex pheromone production and male antennal response to the pheromone. Calling behavior of G. aurantianum females occurred at the onset of scotophase, between 17:00 and 20:00 h. The mean time spent calling was 64 min. It was observed that 30% of the 50 females exhibited a calling posture characterized by extrusion of the pheromone gland from the tip of the abdomen and they spread their wings slightly. Female age had no influence on the sex pheromone production, while male antennal response increased with age and pheromone dosage. The information obtained in this work contributes to understanding the sexual behavior of G. aurantianum and thus to the creation of strategies to control this important pest in macadamia.

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The data underlying this article will be shared on reasonable request to the corresponding author.

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Acknowledgements

The authors would like to thank Pedro Zaldaña Morales for allowing the development of this research at his Buena Vista Farm (San Marcos, Guatemala) and Julio C. Rojas for his suggestions on an earlier draft of the manuscript.

Funding

Funding for this work was provided by Consejo Nacional de Ciencia y Tecnología (CONACYT) through a scholarship granted to Rutver Aranda-Arguello for his doctoral studies (CVU: 641600).

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All authors contributed to the study conception and design. Rutver Aranda-Arguello conducted experiments and wrote first draft of the manuscript. Leopoldo Cruz-López reviewed chemical analysis and examined field data. Leopoldo Cruz-López, Edi A. Malo, and Guillermo López-Guillén reviewed and improved the manuscript. All authors read and approved the manuscript.

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Correspondence to Leopoldo Cruz-López.

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Edited by Andres Gonzáles Ritzel.

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Aranda-Arguello, R., Malo, E.A., López-Guillén, G. et al. Gymnandrosoma aurantianum (Lepidoptera: Tortricidae): Calling Rhythm and Effect of Age on Female Sex Pheromone Titer and Male Antennal Responses. Neotrop Entomol 53, 75–82 (2024). https://doi.org/10.1007/s13744-023-01101-w

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  • DOI: https://doi.org/10.1007/s13744-023-01101-w

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