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Article Dans Une Revue Apidologie Année : 2017

Landscape and pesticide effects on honey bees: forager survival and expression of acetylcholinesterase and brain oxidative genes

Mohamed Alburaki
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Sandra J. Steckel
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Deniz Chen
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Erin Mcdermott
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Milagra Weiss
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John A. Skinner
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Heather Kelly
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Gus Lorenz
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David R. Tarpy
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William G. Meikle
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John Adamczyk
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Scott D. Stewart
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Résumé

AbstractThe aim of the present work was to assess the effects of landscape and pesticides on honey bee survival and physiological stress. Integrated use of acetylcholinesterase and detoxification enzymes was tested on honey bee brains for detecting possible exposure to pesticides. Foragers were tracked in agricultural and non-agricultural landscapes in West Tennessee (USA) and then recovered for molecular and chemical analyses. In addition, four honey bee cohorts were fed imidacloprid in the laboratory ad libitum for several weeks and were analyzed by RT-qPCR for gene expression. Pesticides were identified at different concentrations in both crop flowers and recovered foragers. No significant differences in foragers’ mortality were found among locations. Acetylcholinesterase and detoxification genes showed no response to exposure to pesticides except for GstS3 and GstS4. Our results suggest that none of the studied genes make suitable biomarkers for honey bee exposed to pesticides.
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hal-01710377 , version 1 (15-02-2018)

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Mohamed Alburaki, Sandra J. Steckel, Deniz Chen, Erin Mcdermott, Milagra Weiss, et al.. Landscape and pesticide effects on honey bees: forager survival and expression of acetylcholinesterase and brain oxidative genes. Apidologie, 2017, 48 (4), pp.556-571. ⟨10.1007/s13592-017-0497-3⟩. ⟨hal-01710377⟩
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