Identification of sex pheromone in Macdunnoughia crassisigna Warren (Lepidoptera: Noctuidae) and field optimization of the sex attractant.
Pest Manag Sci
; 80(2): 577-585, 2024 Feb.
Article
em En
| MEDLINE
| ID: mdl-37735837
ABSTRACT
BACKGROUND:
Sex pheromones have proven to be a viable tool for monitoring and controlling pests and is an important part of integrated pest management (IPM). The noctuid moth Macdunnoughia crassisigna Warren poses a significant threat as a defoliator pest, impacting soybean and cruciferous vegetable production and quality in East Asia. However, a lack of comprehensive knowledge about its sexual chemical signaling hampers the development of semiochemical-based IPM approaches for M. crassisigna.RESULTS:
We first determined the mating rhythms of M. crassisigna. We then collected pheromones from the sex glands of virgin females at the mating peak and analyzed their components using gas chromatography-electroantennogram detection analysis. The results showed that three components elicited significant electrophysiological responses in male antennae. Gas chromatography-mass spectrometry analysis characterized these components as (Z)-7-dodecene acetate (Z7-12OAc), (Z)-9-tetradecene acetate (Z9-14OAc), and (Z)-11-hexadecen-1-ol (Z11-16OH). Further field experiments indicated that the mixture of Z7-12OAc and Z9-14OAc at a ratio of 31 displayed significant attractivity to males, confirming its role as a putative sex pheromone of M. crassisigna. Long-term monitoring tests showed that traps baited with these pheromone lures effectively mirrored the population dynamics of M. crassisigna.CONCLUSION:
This study successfully identified and validated the sex pheromone released by female M. crassisigna and formulated potent sex lures for field-based pest monitoring. These findings enriched our understanding of chemical communication in Noctuidae and laid a foundation for developing practical monitoring and control methods against M. crassisigna. © 2023 Society of Chemical Industry.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Atrativos Sexuais
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Lepidópteros
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Mariposas
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article