AUTHOR=Valcárcel Félix , Olmeda A. Sonia , González Marta G. , Andrés Maria Fe , Navarro-Rocha Juliana , González-Coloma Azucena 

TITLE=Acaricidal and Insect Antifeedant Effects of Essential Oils From Selected Aromatic Plants and Their Main Components

JOURNAL=Frontiers in Agronomy

VOLUME=3

YEAR=2021

URL=https://www.frontiersin.org/journals/agronomy/articles/10.3389/fagro.2021.662802

DOI=10.3389/fagro.2021.662802

ISSN=2673-3218

ABSTRACT=<p>This work has demonstrated the ixodicidal and insect antifeedant effects of essential oils from 14 experimentally cultivated aromatic plants. The strong ixodicidal and antifeedant oils corresponded to <italic>Thymus zygis, Thymus vulgaris, Satureja montana, Oreganum virens</italic>, and <italic>Mentha suaveolens</italic>. The moderately active oils were from <italic>Lavandula angustifolia, Mentha piperita, Mentha spicata, Artemisa herba-alba</italic>, and <italic>Rosmarinus officinalis</italic>. The most effective larvicidal and antifeedant compounds were piperitenone oxide, carvacrol, piperitenone, and thymol, explaining the effects of the most active essential oils. The rest of the tested compounds were not ixodicidal or antifeedant. Therefore, the activity of moderately active oils cannot be explained by their main components (linalyl acetate, linalool, menthone, menthol, limonene, camphor, 1,8-cineole, <italic>p</italic>-cymene, α-pìnene, and carvone), suggesting synergistic effects. Considering the ixodicidal and antifeedant effects of these extracts, the plants have been ranked in relation to <italic>Thymus vulgare</italic>, a commercial biopesticide ingredient, for their potential as botanical pesticides. <italic>T. zygis, S. montana</italic>, and <italic>M. suaveolens</italic> ranked over <italic>T. vulgaris</italic> as ixodicidal agents and <italic>S. montana</italic> as insecticidal. Therefore, we propose the plant populations of <italic>S. montana, T. zygis</italic>, and <italic>M. suaveolens</italic> tested here for further development as biopesticide ingredients.</p>