IDENTIFICATION OF SEX PHEROMONE COMPOUNDS ATTRACTIVE TO Anthistarcha binocularis (LEPIDOPTERA: GELECHIIDAE) IN CASHEW

Authors

  • Ariane Morgana Leal Soares Universidade Estadual de Santa Cruz https://orcid.org/0000-0003-1327-7650
  • Paulo Henrique Barcelos França Universidade Federal de Alagoas
  • Merybeth Fernandez Triana Universidade Federal de Alagoas
  • Jakeline Maria dos Santos Universidade Federal de Alagoas
  • Luciara Cavalcante Lima Universidade Federal de Alagoas
  • Henrique Fonseca Goulart Universidade Federal de Alagoas
  • Antônio Euzébio Goulart Santana Universidade Federal de Alagoas

Keywords:

SEX PHEROMONE, CASHEW PEST, GELECHIIDAE

Abstract

The cashew stem borer Anthistarcha binocularis (Meyrick) is a major pest in cashew orchards in Brazil. The damage caused by the larvae results in economic losses, and the available chemical control is not suitable because of the endophytic nature of A. binocularis. The identification of the A. binocularis sex pheromone will allow the monitoring and mass collection control of this pest. To identify and confirm the attractiveness of the compounds, the following steps were followed: rearing of insects in the laboratory, observation of sexual behaviour, sexual gland extraction, attractiveness bioassays, electroantenography bioassay, analysis of spectra, characterization of compounds and confirmation by compound synthesis, and field attractiveness test. Two compounds from female sex gland extracts elicited electrophysiological responses on male antennae. They were identified as dodec-6-en-1-ol and dodec-6-en-1-yl acetate by gas chromatography-mass spectrometry. E/Z stereoisomers of both compounds were synthesized, and the electroantennograms for the synthetic compounds showed the strongest responses for the (E)-stereoisomers of the alcohol and acetate. In a field trial, the E6-12:OH/E6-12:OAc mixture attracted male A. binocularis, whereas the Z6-12:OH/Z6-12:OAc mixture attracted no specimens.The bioactive compounds from the sex pheromone of A. binocularis have been identified as a blend of two previously unidentified pheromone compounds: E6-12:OH and E6-12:OAc. The blend of compounds was attractive to males in preliminary field experiments, and this study is the first report of Δ6-unsaturated monoenyl pheromone compounds in Lepidoptera.

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Published

2019-10-19

How to Cite

Soares, A. M. L., França, P. H. B., Triana, M. F., Santos, J. M. dos, Lima, L. C., Goulart, H. F., & Santana, A. E. G. (2019). IDENTIFICATION OF SEX PHEROMONE COMPOUNDS ATTRACTIVE TO Anthistarcha binocularis (LEPIDOPTERA: GELECHIIDAE) IN CASHEW. Caderno Verde De Agroecologia E Desenvolvimento Sustentável, 9(5), p–05. Retrieved from https://gvaa.com.br/revista/index.php/CVADS/article/view/7121

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