Honey bee queen health is unaffected by contact exposure to pesticides commonly found in beeswax
| Autor: | Leonard J. Foster, David R. Tarpy, Bradley N. Metz, Alison McAfee, Joseph P. Milone, Erin McDermott |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Male Proteomics Oviposition Science Fat Body education Biology 01 natural sciences Beeswax Article Queen (playing card) Toxicology Environmental impact 03 medical and health sciences chemistry.chemical_compound Animals Pesticides reproductive and urinary physiology 030304 developmental biology 0303 health sciences Wax Multidisciplinary Pesticide residue Chlorothalonil Dose-Response Relationship Drug Sperm Count Reproduction Pesticide Residues Coumaphos Honey bee Environmental Exposure Pesticide Bees 3. Good health 010602 entomology Metabolism chemistry visual_art Waxes visual_art.visual_art_medium behavior and behavior mechanisms Insect Proteins Medicine Female Beekeeping Entomology |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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