Publication: Sulfoxaflor effects depend on the interaction with other pesticides and Nosema ceranae infection in the honey bee (Apis mellifera)
Authors
Urueña, Álvaro ; Blasco-Lavilla, Nuria ; De la Rúa Tarín, Pilar
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.ecoenv.2023.115427
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Description
© 2023 The Authors. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Published Manuscript version of a Published Work that appeared in final form in Ecotoxicology and Environmental Safety. To access the final edited and published work see https://doi.org/10.1016/j.ecoenv.2023.115427
Abstract
Honey bees health is compromised by many factors such as the use of agrochemicals in agriculture and the
various diseases that can affect them. Multiple studies have shown that these factors can interact, producing a
synergistic effect that can compromise the viability of honey bees. This study analyses the interactions between
different pesticides and the microsporidium Nosema ceranae and their effect on immune and detoxification gene
expression, sugar consumption and mortality in the Iberian western honey bee (Apis mellifera iberiensis). For this purpose, workers were infected with N. ceranae and subjected to a sugar-water diet with field concentrations of the pesticides sulfoxaflor, azoxystrobin and glyphosate. Increased sugar intake and altered immune and cytochrome P450 gene expression were observed in workers exposed to sulfoxaflor and infected with N. ceranae. None of the pesticides affected Nosema spore production in honey bee gut. Of the three pesticides tested (alone or in combination) only sulfoxaflor increased mortality in honey bees. Taken together, our results suggest that the effects of sulfoxaflor were attenuated in contact with other pesticides, and that Nosema infection leads to increase sugar intake in sulfoxaflor-exposed bees. Overall, this underlines the importance of studying the interaction between different stressors to understand their overall impact not only on honey bee but also on wild bees health.
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Citation
Ecotoxicology and Environmental Safety, 2023, Vol. 264 : 115427
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