Chemical Composition and Insecticidal Properties of Origanum vulgare (Lamiaceae) Essential Oil against the Stored Product Beetle, Sitophilus granarius

Author:

Plata-Rueda Angelica,Santos Marcelo Henrique Dos,Serrão José EduardoORCID,Martínez Luis CarlosORCID

Abstract

Although phosphides are utilized in stored pest control, efforts have been made to discover environmentally friendly insecticides. For insecticidal properties, essential oils (EOs) are considered to be novel alternatives for pesticide use. This study characterized the Origanum vulgare EO by gas chromatography–flame ionization detector (GC–FID) × gas chromatography–mass spectrometry (GC–MS) and assessed the insecticidal activities against Sitophilus granarius. Mortality, post-exposure survival, behavior, and respiration caused by this EO in S. granarius were investigated. The majority of the compounds were p-cymene, carvacrol, linalool, and thymol. In dose–mortality bioassays, the lethality of this EO (LD50 = 3.05 µg insect−1 and LD90 = 10.02 µg insect−1) was confirmed in S. granarius. The survival rate was 99.9% in adults not treated with O. vulgare EOs, reducing to 44.9% and 10.3% in weevils treated with 3.05 µg insect−1 and 10.02 µg insect−1, respectively. The O. vulgare EO alters the behavioral pattern in terms of walking distance and resting time, displaying repellency. Additionally, this EO reduced the gas exchange of weevils from 2.78 to 2.36 µL CO2 h−1 at 3.05 µg insect−1, after 3 h EO exposure. The results suggest that O. vulgare EOs affect different biological functions in the insect, and open new perspectives for controlling stored pests, representing a first step in the innovation of green pesticides.

Publisher

MDPI AG

Subject

Agronomy and Crop Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3