Re: methods of mite sampling
Mites are strongly drawn by brood pheromones. Sugar and alcohol washes will only give meaningful numbers if the bees sampled are mainly nurse bees taken from brood frames.
Sometimes I will see mites walking on newly drawn comb that contains larvae. They stand out against the white comb. If you've never seen one walking....you will be amazed at how fast they can move.
Foraging bees will have a substantially lower infestation rate.
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted. - Emerson