Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions

Abstract The honey bee, Apis mellifera L., is the world’s most important managed pollinator of agricultural crops, however, Varroa mite, Varroa destructor Anderson and Trueman, infestation has threatened honey bee survivorship. Low efficacy and development of Varroa mite resistance to currently used...

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Autores principales:	Rassol Bahreini, Medhat Nasr, Cassandra Docherty, Olivia de Herdt, Samantha Muirhead, David Feindel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/37386f2914544fe49d66495550d9940e
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spelling	oai:doaj.org-article:37386f2914544fe49d66495550d9940e2021-12-02T11:43:43ZEvaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions10.1038/s41598-020-78561-22045-2322https://doaj.org/article/37386f2914544fe49d66495550d9940e2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78561-2https://doaj.org/toc/2045-2322Abstract The honey bee, Apis mellifera L., is the world’s most important managed pollinator of agricultural crops, however, Varroa mite, Varroa destructor Anderson and Trueman, infestation has threatened honey bee survivorship. Low efficacy and development of Varroa mite resistance to currently used Varroacides has increased the demand for innovative, effective treatment tool options that exhibit high efficacy, while minimizing adverse effects on honey bee fitness. In this investigation, the toxicity of 16 active ingredients and 9 formulated products of registered miticides for use on crops from 12 chemical families were evaluated in comparison to amitraz on Varroa mites and honey bees using contact surface and topical exposures. It was found that fenpyroximate (93% mortality), spirotetramat (84% mortality) and spirodiclofen (70% mortality) had greater toxicity to Varroa mites, but high dose rates caused high bee mortality (> 60%). With this in mind, further research is needed to investigate other options to minimize the adverse effect of these compounds on bees. The results also found high toxicity of fenazaquin and etoxazole against Varroa mites causing 92% and 69% mortality, respectively; and were found to be safe on honey bees. Collectively, it is recommended that fenazaquin and etoxazole are candidates for a potential Varroacide and recommended for further testing against Varroa mites at the colony level.Rassol BahreiniMedhat NasrCassandra DochertyOlivia de HerdtSamantha MuirheadDavid FeindelNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-14 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rassol Bahreini Medhat Nasr Cassandra Docherty Olivia de Herdt Samantha Muirhead David Feindel Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
description	Abstract The honey bee, Apis mellifera L., is the world’s most important managed pollinator of agricultural crops, however, Varroa mite, Varroa destructor Anderson and Trueman, infestation has threatened honey bee survivorship. Low efficacy and development of Varroa mite resistance to currently used Varroacides has increased the demand for innovative, effective treatment tool options that exhibit high efficacy, while minimizing adverse effects on honey bee fitness. In this investigation, the toxicity of 16 active ingredients and 9 formulated products of registered miticides for use on crops from 12 chemical families were evaluated in comparison to amitraz on Varroa mites and honey bees using contact surface and topical exposures. It was found that fenpyroximate (93% mortality), spirotetramat (84% mortality) and spirodiclofen (70% mortality) had greater toxicity to Varroa mites, but high dose rates caused high bee mortality (> 60%). With this in mind, further research is needed to investigate other options to minimize the adverse effect of these compounds on bees. The results also found high toxicity of fenazaquin and etoxazole against Varroa mites causing 92% and 69% mortality, respectively; and were found to be safe on honey bees. Collectively, it is recommended that fenazaquin and etoxazole are candidates for a potential Varroacide and recommended for further testing against Varroa mites at the colony level.
format	article
author	Rassol Bahreini Medhat Nasr Cassandra Docherty Olivia de Herdt Samantha Muirhead David Feindel
author_facet	Rassol Bahreini Medhat Nasr Cassandra Docherty Olivia de Herdt Samantha Muirhead David Feindel
author_sort	Rassol Bahreini
title	Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
title_short	Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
title_full	Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
title_fullStr	Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
title_full_unstemmed	Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions
title_sort	evaluation of potential miticide toxicity to varroa destructor and honey bees, apis mellifera, under laboratory conditions
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/37386f2914544fe49d66495550d9940e
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Evaluation of potential miticide toxicity to Varroa destructor and honey bees, Apis mellifera, under laboratory conditions

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