Is your honey laced with neonicotinoid?

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There is a reasonable chance there is. From the current issue of Science:

Growing evidence for global pollinator decline is causing concern for biodiversity conservation and ecosystem services maintenance. Neonicotinoid pesticides have been identified or suspected as a key factor responsible for this decline. We assessed the global exposure of pollinators to neonicotinoids by analyzing 198 honey samples from across the world. We found at least one of five tested compounds (acetamiprid, clothianidin, imidacloprid, thiacloprid, and thiamethoxam) in 75% of all samples, 45% of samples contained two or more of these compounds, and 10% contained four or five. Our results confirm the exposure of bees to neonicotinoids in their food throughout the world. The coexistence of neonicotinoids and other pesticides may increase harm to pollinators. However, the concentrations detected are below the maximum residue level authorized for human consumption (average ± standard error for positive samples: 1.8 ± 0.56 nanograms per gram).

A worldwide survey of neonicotinoids in honey, by E. Mitchel et al.

Caption for the figure at the top of the post:

Fig. 1 Worldwide contamination of honey by neonicotinoids.
(A) Worldwide distribution of honey contamination by neonicotinoids. White symbols, concentration below quantification levels (LOQ for at least one neonicotinoid; shading indicates the total neonicotinoid concentration (nanograms per gram). Pie chart insets: Relative proportion of overall concentration of each neonicotinoid by continent (legend in bottom inset). (B) Overall percentage of samples with quantifiable amounts of 0, 1, or a cocktail of 2, 3, 4, or 5 individual neonicotinoids. (C) Proportion of samples with 0, 1, 2, 3, 4, and 5 individual neonicotinoids in each continent. (D) Rank-concentration distribution of total neonicotinoids in all of the 149 samples in which quantifiable amounts of neonicotinoids were measured.

I’m still … er … digesting this. What do you think?


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