Cargando…

Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.

Overwinter colony mortality is an ongoing challenge for North American beekeepers. During winter, honey bee colonies rely on stored honey and beebread, which is frequently contaminated with the neonicotinoid insecticides clothianidin and thiamethoxam. To determine whether neonicotinoid exposure affe...

Descripción completa

Detalles Bibliográficos
Autores principales: Wood, Sarah C., Kozii, Ivanna V., Medici de Mattos, Igor, de Carvalho Macedo Silva, Roney, Klein, Colby D., Dvylyuk, Ihor, Moshynskyy, Igor, Epp, Tasha, Simko, Elemir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022569/
https://www.ncbi.nlm.nih.gov/pubmed/31906066
http://dx.doi.org/10.3390/insects11010030
_version_ 1783498045701226496
author Wood, Sarah C.
Kozii, Ivanna V.
Medici de Mattos, Igor
de Carvalho Macedo Silva, Roney
Klein, Colby D.
Dvylyuk, Ihor
Moshynskyy, Igor
Epp, Tasha
Simko, Elemir
author_facet Wood, Sarah C.
Kozii, Ivanna V.
Medici de Mattos, Igor
de Carvalho Macedo Silva, Roney
Klein, Colby D.
Dvylyuk, Ihor
Moshynskyy, Igor
Epp, Tasha
Simko, Elemir
author_sort Wood, Sarah C.
collection PubMed
description Overwinter colony mortality is an ongoing challenge for North American beekeepers. During winter, honey bee colonies rely on stored honey and beebread, which is frequently contaminated with the neonicotinoid insecticides clothianidin and thiamethoxam. To determine whether neonicotinoid exposure affects overwinter survival of Apis mellifera L., we chronically exposed overwintering field colonies and winter workers in the laboratory to thiamethoxam or clothianidin at different concentrations and monitored survival and feed consumption. We also investigated the sublethal effects of chronic thiamethoxam exposure on colony pathogen load, queen quality, and colony temperature regulation. Under field conditions, high doses of thiamethoxam significantly increased overwinter mortality compared to controls, with field-realistic doses of thiamethoxam showing no significant effect on colony overwinter survival. Under laboratory conditions, chronic neonicotinoid exposure significantly decreased survival of winter workers relative to negative control at all doses tested. Chronic high-dose thiamethoxam exposure was not shown to impact pathogen load or queen quality, and field-realistic concentrations of thiamethoxam did not affect colony temperature homeostasis. Taken together, these results demonstrate that chronic environmental neonicotinoid exposure significantly decreases survival of winter workers in the laboratory, but only chronic high-dose thiamethoxam significantly decreases overwinter survival of colonies in the field.
format Online
Article
Text
id pubmed-7022569
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-70225692020-03-09 Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L. Wood, Sarah C. Kozii, Ivanna V. Medici de Mattos, Igor de Carvalho Macedo Silva, Roney Klein, Colby D. Dvylyuk, Ihor Moshynskyy, Igor Epp, Tasha Simko, Elemir Insects Article Overwinter colony mortality is an ongoing challenge for North American beekeepers. During winter, honey bee colonies rely on stored honey and beebread, which is frequently contaminated with the neonicotinoid insecticides clothianidin and thiamethoxam. To determine whether neonicotinoid exposure affects overwinter survival of Apis mellifera L., we chronically exposed overwintering field colonies and winter workers in the laboratory to thiamethoxam or clothianidin at different concentrations and monitored survival and feed consumption. We also investigated the sublethal effects of chronic thiamethoxam exposure on colony pathogen load, queen quality, and colony temperature regulation. Under field conditions, high doses of thiamethoxam significantly increased overwinter mortality compared to controls, with field-realistic doses of thiamethoxam showing no significant effect on colony overwinter survival. Under laboratory conditions, chronic neonicotinoid exposure significantly decreased survival of winter workers relative to negative control at all doses tested. Chronic high-dose thiamethoxam exposure was not shown to impact pathogen load or queen quality, and field-realistic concentrations of thiamethoxam did not affect colony temperature homeostasis. Taken together, these results demonstrate that chronic environmental neonicotinoid exposure significantly decreases survival of winter workers in the laboratory, but only chronic high-dose thiamethoxam significantly decreases overwinter survival of colonies in the field. MDPI 2019-12-31 /pmc/articles/PMC7022569/ /pubmed/31906066 http://dx.doi.org/10.3390/insects11010030 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wood, Sarah C.
Kozii, Ivanna V.
Medici de Mattos, Igor
de Carvalho Macedo Silva, Roney
Klein, Colby D.
Dvylyuk, Ihor
Moshynskyy, Igor
Epp, Tasha
Simko, Elemir
Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title_full Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title_fullStr Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title_full_unstemmed Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title_short Chronic High-Dose Neonicotinoid Exposure Decreases Overwinter Survival of Apis mellifera L.
title_sort chronic high-dose neonicotinoid exposure decreases overwinter survival of apis mellifera l.
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022569/
https://www.ncbi.nlm.nih.gov/pubmed/31906066
http://dx.doi.org/10.3390/insects11010030
work_keys_str_mv AT woodsarahc chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT koziiivannav chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT medicidemattosigor chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT decarvalhomacedosilvaroney chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT kleincolbyd chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT dvylyukihor chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT moshynskyyigor chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT epptasha chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal
AT simkoelemir chronichighdoseneonicotinoidexposuredecreasesoverwintersurvivalofapismelliferal