Second trial replicating CCD with neonicotinoids.
Here is a Japanese report of an apiary-based trial on the effects over time on bee colonies, of various levels of two neonicotinoids which are routinely sprayed on Japanese rice paddies.
To crudely summarise, all colonies fed neonics died with CCD symptoms; the controls did fine.
There are problems with the quality of the translation, and it's possible that some forum members may criticise some of the trial parameters and methodology.
Nevertheless, on the back of the Harvard study, this is a clear support for the case against neonicotinoids, is it not?
See:
http://www.bijensterfte.nl/sites/def...%282012%29.pdf
'ppb/ppm.' See the wood and the trees.
Quote:
Originally Posted by
Jon
Bees feed on pollen and nectar. You need to test at the levels found in pollen and nectar. They don't feed on spray.
Surely, the point is that these colonies, which had access to alternative food sources, as well as neonic-laced syrup, wilted and died over several months displaying classic CCD symptoms.
When crops are sprayed, bees will take water, nectar, and pollen with varying levels of pollution. This study replicates such a range.
Yes, there could be other trials with lower levels, for longer or shorter time periods,but none of the other threats to bees have been so clearly shown to produce CCD.