Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species

Abstract Plant essential oils are considered as important bio-sources for the development of natural and environmentally safe pest control tools due to their multiple modes of action on insects. In this paper we have evaluated the activity of commercially available thyme oil and its constituents thy...

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Autores principales:	Sergio López, Aroa Domínguez, Ángel Guerrero, Carmen Quero
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e6832601426949e885da43d8ca6f15e4
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spelling	oai:doaj.org-article:e6832601426949e885da43d8ca6f15e42021-12-02T14:12:07ZInhibitory effect of thymol on pheromone-mediated attraction in two pest moth species10.1038/s41598-020-79550-12045-2322https://doaj.org/article/e6832601426949e885da43d8ca6f15e42021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79550-1https://doaj.org/toc/2045-2322Abstract Plant essential oils are considered as important bio-sources for the development of natural and environmentally safe pest control tools due to their multiple modes of action on insects. In this paper we have evaluated the activity of commercially available thyme oil and its constituents thymol, carvacrol, and p-cymene, as potential disruptants of the pheromone-mediated communication in the major pest moths Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae), and Grapholita molesta (Busck) (Lepidoptera: Tortricidae). In electroantennographic assays, the antennal response of males to thyme oil, thymol, and carvacrol was altered at high doses (103–104 µg), shifting the signal waveform into a biphasic negative–positive potential that caused a decay in the response. In wind tunnel assays, pheromone-mediated attraction of males of both species was interrupted in presence of thyme oil. Further trials demonstrated that thymol alone reduced the number of G. molesta and S. littoralis males landing on the pheromone source. This effect did not differ from that of thyme oil, although the latter provoked a significant reduction on downwind behavior steps in S. littoralis. Overall, our findings provide a preliminary basis for delving into the effect of thyme oil, and especially of its major constituent thymol, as potential mating disruptants of both species.Sergio LópezAroa DomínguezÁngel GuerreroCarmen QueroNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sergio López Aroa Domínguez Ángel Guerrero Carmen Quero Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
description	Abstract Plant essential oils are considered as important bio-sources for the development of natural and environmentally safe pest control tools due to their multiple modes of action on insects. In this paper we have evaluated the activity of commercially available thyme oil and its constituents thymol, carvacrol, and p-cymene, as potential disruptants of the pheromone-mediated communication in the major pest moths Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae), and Grapholita molesta (Busck) (Lepidoptera: Tortricidae). In electroantennographic assays, the antennal response of males to thyme oil, thymol, and carvacrol was altered at high doses (103–104 µg), shifting the signal waveform into a biphasic negative–positive potential that caused a decay in the response. In wind tunnel assays, pheromone-mediated attraction of males of both species was interrupted in presence of thyme oil. Further trials demonstrated that thymol alone reduced the number of G. molesta and S. littoralis males landing on the pheromone source. This effect did not differ from that of thyme oil, although the latter provoked a significant reduction on downwind behavior steps in S. littoralis. Overall, our findings provide a preliminary basis for delving into the effect of thyme oil, and especially of its major constituent thymol, as potential mating disruptants of both species.
format	article
author	Sergio López Aroa Domínguez Ángel Guerrero Carmen Quero
author_facet	Sergio López Aroa Domínguez Ángel Guerrero Carmen Quero
author_sort	Sergio López
title	Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
title_short	Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
title_full	Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
title_fullStr	Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
title_full_unstemmed	Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
title_sort	inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e6832601426949e885da43d8ca6f15e4
work_keys_str_mv	AT sergiolopez inhibitoryeffectofthymolonpheromonemediatedattractionintwopestmothspecies AT aroadominguez inhibitoryeffectofthymolonpheromonemediatedattractionintwopestmothspecies AT angelguerrero inhibitoryeffectofthymolonpheromonemediatedattractionintwopestmothspecies AT carmenquero inhibitoryeffectofthymolonpheromonemediatedattractionintwopestmothspecies
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Inhibitory effect of thymol on pheromone-mediated attraction in two pest moth species

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