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Informed Discussion of Beekeeping Issues and Bee Biology

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Subject:
From:
Peter L Borst <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Mon, 26 Oct 2009 15:51:24 -0400
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Bob writes:
> Both Stan & I are around a higher number of hives than any study ever done on the neonicotinoids 

If the sampling is done correctly, you don't need thousands of hives to get the info you want. We have gone over and over sampling technique so I will skip the lecture.

Influence of Pesticide Residues on Honey Bee Colony Health in France

This 3-yr field survey to study colony health under
natural conditions involved 120 colonies randomly
selected in 24 apiaries. We conducted four full clinical
visits each year to evaluate colony health, mortality,
and the presence of pesticide residues. Although we
detected pesticide residues, and often in the presence
of another residue, their presence was NOT statistically
associated with bee population decline or colony mortality.

Imidacloprid and 6-chloronicotinic acid residues
were the most frequently detected molecules in honey
bees, honey, and pollen loads, although at low mean
concentrations.

In our study, we found that pesticide residues were
present at low levels ... We found no
association between the presence of pesticide residues
and with variation in populations of adult or
broods or with colony mortality.

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