I don't post often, but I think I'll stir the syrup. If you read the abstract, it seems to make sense. It does not say that HFCS is toxic. It says that some components of pollen and poplar sap contain components which activate the bee immune system. HFCS does not have the components and may contribute to bees being more vulnerable to the environmental stresses.
The abstract also insinuates that commercial operations are stripping all honey and substituting HFCS instead. Im hear to tell ya all commercial operators I know feed HFCS in the early spring to prep for almonds or early build up for colonies.
How long does poplars bloom for? Is the assumption also that we commercial guys keep bees from bringing pollen in the hive?
It seems like a fairly ridiculous study. There are components of HFCS that is unhealthy for bees which shortens their lives. However with only a few feedings of HFCS you will only have HFCS bees for about 1 brood cycle. The rest will be from the natural nectar, etc... So lets say each colony was given 2 gallons of HFCS in Jan before going to almonds. They spend 8 weeks in Ca bringing in pollen and nectar from the almonds. Then they come back get split and fed 2 more times with HFCS, all the while bringing in natural forage. Is HFCS really a major issue?
Seems to have worked for beekeepers for years and years.