> Such acute exposure cannot probably occur in the realistic conditions
> since the concentrations of imidacloprid and its metabolites, to
which honey bees are exposed
> always have been measured lower than 10 g kg1. (s/b micrograms/kg,
which is equal to ppb)
I keep wondering how small the field samples are, how they are collected
and mixed and averaged,
and how closely they represent the samples that individual bees experience.
> Although data in field tests are often inadequate to demonstrate
causation unambiguously, the
> loss of the colonies could not be verified for imidacloprid under
field conditions, where no effects
> on hive development have been detected.
I tend to question the collection and use of data in such field studies
and wonder if the methods may
discard or discount the very effects that beekeepers claim. A big one
is increased variability in
managed hives.
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