Evaluating the Efficacy of 30 Different Essential Oils against Varroa destructor and Honey Bee Workers (Apis mellifera)

Essential oils and their components are generally known for their acaricidal effects and are used as an alternative to control the population of the Varroa destructor instead of synthetic acaricides. However, for many essential oils, the exact acaricidal effect against Varroa mite...

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Autores principales:	Marian Hýbl, Andrea Bohatá, Iva Rádsetoulalová, Marek Kopecký, Irena Hoštičková, Alena Vaníčková, Petr Mráz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	acaricidal effect complete exposure bioassay honey bee screening Varroa mite Science Q
Acceso en línea:	https://doaj.org/article/6d4e9856db244625ba9004bd5712ce0c
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spelling	oai:doaj.org-article:6d4e9856db244625ba9004bd5712ce0c2021-11-25T18:00:06ZEvaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)10.3390/insects121110452075-4450https://doaj.org/article/6d4e9856db244625ba9004bd5712ce0c2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4450/12/11/1045https://doaj.org/toc/2075-4450Essential oils and their components are generally known for their acaricidal effects and are used as an alternative to control the population of the <i>Varroa destructor</i> instead of synthetic acaricides. However, for many essential oils, the exact acaricidal effect against Varroa mites, as well as the effect against honey bees, is not known. In this study, 30 different essential oils were screened by using a glass-vial residual bioassay. Essential oils showing varroacidal efficacy > 70% were tested by the complete exposure assay. A total of five bees and five mites were placed in the Petri dishes in five replications for each concentration of essential oil. Mite and bee mortality rates were assessed after 4, 24, 48, and 72 h. The LC<sub>50</sub> values and selectivity ratio (SR) were calculated. For essential oils with the best selectivity ratio, their main components were detected and quantified by GC-MS/MS. The results suggest that the most suitable oils are peppermint and manuka (SR > 9), followed by oregano, litsea (SR > 5), carrot, and cinnamon (SR > 4). Additionally, these oils showed a trend of the increased value of selective ratio over time. All these oils seem to be better than thymol (SR < 3.2), which is commonly used in beekeeping practice. However, the possible use of these essential oils has yet to be verified in beekeeping practice.Marian HýblAndrea BohatáIva RádsetoulalováMarek KopeckýIrena HoštičkováAlena VaníčkováPetr MrázMDPI AGarticleacaricidal effectcomplete exposure bioassayhoney beescreeningVarroa miteScienceQENInsects, Vol 12, Iss 1045, p 1045 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	acaricidal effect complete exposure bioassay honey bee screening Varroa mite Science Q
spellingShingle	acaricidal effect complete exposure bioassay honey bee screening Varroa mite Science Q Marian Hýbl Andrea Bohatá Iva Rádsetoulalová Marek Kopecký Irena Hoštičková Alena Vaníčková Petr Mráz Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
description	Essential oils and their components are generally known for their acaricidal effects and are used as an alternative to control the population of the <i>Varroa destructor</i> instead of synthetic acaricides. However, for many essential oils, the exact acaricidal effect against Varroa mites, as well as the effect against honey bees, is not known. In this study, 30 different essential oils were screened by using a glass-vial residual bioassay. Essential oils showing varroacidal efficacy > 70% were tested by the complete exposure assay. A total of five bees and five mites were placed in the Petri dishes in five replications for each concentration of essential oil. Mite and bee mortality rates were assessed after 4, 24, 48, and 72 h. The LC<sub>50</sub> values and selectivity ratio (SR) were calculated. For essential oils with the best selectivity ratio, their main components were detected and quantified by GC-MS/MS. The results suggest that the most suitable oils are peppermint and manuka (SR > 9), followed by oregano, litsea (SR > 5), carrot, and cinnamon (SR > 4). Additionally, these oils showed a trend of the increased value of selective ratio over time. All these oils seem to be better than thymol (SR < 3.2), which is commonly used in beekeeping practice. However, the possible use of these essential oils has yet to be verified in beekeeping practice.
format	article
author	Marian Hýbl Andrea Bohatá Iva Rádsetoulalová Marek Kopecký Irena Hoštičková Alena Vaníčková Petr Mráz
author_facet	Marian Hýbl Andrea Bohatá Iva Rádsetoulalová Marek Kopecký Irena Hoštičková Alena Vaníčková Petr Mráz
author_sort	Marian Hýbl
title	Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
title_short	Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
title_full	Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
title_fullStr	Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
title_full_unstemmed	Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)
title_sort	evaluating the efficacy of 30 different essential oils against <i>varroa destructor</i> and honey bee workers (<i>apis mellifera</i>)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6d4e9856db244625ba9004bd5712ce0c
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Evaluating the Efficacy of 30 Different Essential Oils against <i>Varroa destructor</i> and Honey Bee Workers (<i>Apis mellifera</i>)

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