Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax

Abstract Honey bee queen health is crucial for colony health and productivity, and pesticides have been previously associated with queen loss and premature supersedure. Prior research has investigated the effects of indirect pesticide exposure on queens via workers, as well as direct effects on quee...

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Autores principales:	Alison McAfee, Joseph P Milone, Bradley Metz, Erin McDermott, Leonard J Foster, David R Tarpy
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3934955cf474ebba7955cc4821ece14
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spelling	oai:doaj.org-article:f3934955cf474ebba7955cc4821ece142021-12-02T16:06:42ZHoney bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax10.1038/s41598-021-94554-12045-2322https://doaj.org/article/f3934955cf474ebba7955cc4821ece142021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94554-1https://doaj.org/toc/2045-2322Abstract Honey bee queen health is crucial for colony health and productivity, and pesticides have been previously associated with queen loss and premature supersedure. Prior research has investigated the effects of indirect pesticide exposure on queens via workers, as well as direct effects on queens during development. However, as adults, queens are in constant contact with wax as they walk on comb and lay eggs; therefore, direct pesticide contact with adult queens is a relevant but seldom investigated exposure route. Here, we conducted laboratory and field experiments to investigate the impacts of topical pesticide exposure on adult queens. We tested six pesticides commonly found in wax: coumaphos, tau-fluvalinate, atrazine, 2,4-DMPF, chlorpyriphos, chlorothalonil, and a cocktail of all six, each administered at 1, 4, 8, 16, and 32 times the concentrations typically found in wax. We found no effect of any treatment on queen mass, sperm viability, or fat body protein expression. In a field trial testing queen topical exposure of a pesticide cocktail, we found no impact on egg-laying pattern, queen mass, emergence mass of daughter workers, and no proteins in the spermathecal fluid were differentially expressed. These experiments consistently show that pesticides commonly found in wax have no direct impact on queen performance, reproduction, or quality metrics at the doses tested. We suggest that previously reported associations between high levels of pesticide residues in wax and queen failure are most likely driven by indirect effects of worker exposure (either through wax or other hive products) on queen care or queen perception.Alison McAfeeJoseph P MiloneBradley MetzErin McDermottLeonard J FosterDavid R TarpyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alison McAfee Joseph P Milone Bradley Metz Erin McDermott Leonard J Foster David R Tarpy Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
description	Abstract Honey bee queen health is crucial for colony health and productivity, and pesticides have been previously associated with queen loss and premature supersedure. Prior research has investigated the effects of indirect pesticide exposure on queens via workers, as well as direct effects on queens during development. However, as adults, queens are in constant contact with wax as they walk on comb and lay eggs; therefore, direct pesticide contact with adult queens is a relevant but seldom investigated exposure route. Here, we conducted laboratory and field experiments to investigate the impacts of topical pesticide exposure on adult queens. We tested six pesticides commonly found in wax: coumaphos, tau-fluvalinate, atrazine, 2,4-DMPF, chlorpyriphos, chlorothalonil, and a cocktail of all six, each administered at 1, 4, 8, 16, and 32 times the concentrations typically found in wax. We found no effect of any treatment on queen mass, sperm viability, or fat body protein expression. In a field trial testing queen topical exposure of a pesticide cocktail, we found no impact on egg-laying pattern, queen mass, emergence mass of daughter workers, and no proteins in the spermathecal fluid were differentially expressed. These experiments consistently show that pesticides commonly found in wax have no direct impact on queen performance, reproduction, or quality metrics at the doses tested. We suggest that previously reported associations between high levels of pesticide residues in wax and queen failure are most likely driven by indirect effects of worker exposure (either through wax or other hive products) on queen care or queen perception.
format	article
author	Alison McAfee Joseph P Milone Bradley Metz Erin McDermott Leonard J Foster David R Tarpy
author_facet	Alison McAfee Joseph P Milone Bradley Metz Erin McDermott Leonard J Foster David R Tarpy
author_sort	Alison McAfee
title	Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
title_short	Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
title_full	Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
title_fullStr	Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
title_full_unstemmed	Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
title_sort	honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f3934955cf474ebba7955cc4821ece14
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Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax

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