I'm just an old carpenter, so will bow to the expertise of your future findings.
I would, however, close by saying that the folks who own one of the largest honeybee pollination outfits in this half of the country are family friends, and their business is buzzing along quite nicely.
cheers :-)
It may be economically feasible to buy live bees to replace the dead ones, even if a lot of them die. If that is going on, still not very reassuring.
But if the amount of dead bees is the same as expected, we don't have to blame roundup or anything else.