Origanum vulgare Essential Oil against Tenebrio molitor (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response

Tenebrio molitor is one of the main stored product pests. This study characterized oregano essential oil (OEO) by gas chromatography (GC/FID and GC/MS) and assessed its insecticidal properties against T. molitor. Mortality, survival, respiration, and behavioral...

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Autores principales:	Angelica Plata-Rueda, José Cola Zanuncio, José Eduardo Serrão, Luis Carlos Martínez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	gas chromatography repellency respiration rate terpenoids survivorship yellow mealworm Botany QK1-989
Acceso en línea:	https://doaj.org/article/b0d9923e31d443a88fc74eac438acc12
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spelling	oai:doaj.org-article:b0d9923e31d443a88fc74eac438acc122021-11-25T18:47:14Z<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response10.3390/plants101125132223-7747https://doaj.org/article/b0d9923e31d443a88fc74eac438acc122021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2513https://doaj.org/toc/2223-7747<i>Tenebrio molitor</i> is one of the main stored product pests. This study characterized oregano essential oil (OEO) by gas chromatography (GC/FID and GC/MS) and assessed its insecticidal properties against <i>T. molitor</i>. Mortality, survival, respiration, and behavioral response in larva, pupa, and adult of this insect were determined. The major components of OEO were carvacrol (25.6%), p-cymene (12.3%), linalool (8.71%), thymol (7.22%), γ-terpinene (7.21%), caryophyllene oxide (4.67%), α-pinene (2.71%), and eucalyptol (2.69%). OEO caused high contact toxicity in larvae (LD<sub>50</sub> = 3.03 µg insect<sup>–1</sup>), pupae (LD<sub>50</sub> = 5.01 µg insect<sup>–1</sup>), and adults (LD<sub>50</sub> = 5.12 µg insect<sup>−1</sup>) of <i>T. molitor</i>. Survival rates were 100% in larvae, pupae, and adults of <i>T. molitor</i> not treated with OEO, declining to 65–54%, 38–44%, 30–23%, and 6–2% in insects treated with LD<sub>25</sub>, LD<sub>50</sub>, LD<sub>75</sub>, and LD<sub>90</sub>, respectively. Low respiration rates of <i>T. molitor</i> at different developmental stages was observed after OEO exposure. Additionally, OEO exposure affects behavioral avoidance response and causes repellency in larvae and adults. These findings show that OEO exerts insecticidal and repellent effects against <i>T. molitor</i>, suggesting a potent alternative to synthetic insecticides for controlling the beetle.Angelica Plata-RuedaJosé Cola ZanuncioJosé Eduardo SerrãoLuis Carlos MartínezMDPI AGarticlegas chromatographyrepellencyrespiration rateterpenoidssurvivorshipyellow mealwormBotanyQK1-989ENPlants, Vol 10, Iss 2513, p 2513 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	gas chromatography repellency respiration rate terpenoids survivorship yellow mealworm Botany QK1-989
spellingShingle	gas chromatography repellency respiration rate terpenoids survivorship yellow mealworm Botany QK1-989 Angelica Plata-Rueda José Cola Zanuncio José Eduardo Serrão Luis Carlos Martínez <i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
description	<i>Tenebrio molitor</i> is one of the main stored product pests. This study characterized oregano essential oil (OEO) by gas chromatography (GC/FID and GC/MS) and assessed its insecticidal properties against <i>T. molitor</i>. Mortality, survival, respiration, and behavioral response in larva, pupa, and adult of this insect were determined. The major components of OEO were carvacrol (25.6%), p-cymene (12.3%), linalool (8.71%), thymol (7.22%), γ-terpinene (7.21%), caryophyllene oxide (4.67%), α-pinene (2.71%), and eucalyptol (2.69%). OEO caused high contact toxicity in larvae (LD<sub>50</sub> = 3.03 µg insect<sup>–1</sup>), pupae (LD<sub>50</sub> = 5.01 µg insect<sup>–1</sup>), and adults (LD<sub>50</sub> = 5.12 µg insect<sup>−1</sup>) of <i>T. molitor</i>. Survival rates were 100% in larvae, pupae, and adults of <i>T. molitor</i> not treated with OEO, declining to 65–54%, 38–44%, 30–23%, and 6–2% in insects treated with LD<sub>25</sub>, LD<sub>50</sub>, LD<sub>75</sub>, and LD<sub>90</sub>, respectively. Low respiration rates of <i>T. molitor</i> at different developmental stages was observed after OEO exposure. Additionally, OEO exposure affects behavioral avoidance response and causes repellency in larvae and adults. These findings show that OEO exerts insecticidal and repellent effects against <i>T. molitor</i>, suggesting a potent alternative to synthetic insecticides for controlling the beetle.
format	article
author	Angelica Plata-Rueda José Cola Zanuncio José Eduardo Serrão Luis Carlos Martínez
author_facet	Angelica Plata-Rueda José Cola Zanuncio José Eduardo Serrão Luis Carlos Martínez
author_sort	Angelica Plata-Rueda
title	<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
title_short	<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
title_full	<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
title_fullStr	<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
title_full_unstemmed	<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response
title_sort	<i>origanum vulgare</i> essential oil against <i>tenebrio molitor</i> (coleoptera: tenebrionidae): composition, insecticidal activity, and behavioral response
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b0d9923e31d443a88fc74eac438acc12
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<i>Origanum vulgare</i> Essential Oil against <i>Tenebrio molitor</i> (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response

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