Re: Treatment-Free Beekeeping in Norway scientifically studied
Addressing the fear of selecting for "worker mites," when Nicholas Calderone was researching drone brood for trapping mites his team tried to select for mites that preferred worker brood, but they were unable to do so.
When mites do not have a phoretic stage they have fewer viable offspring than mites that do have the phoretic stage. Having a shorter phoretic stage may reduce the number of viable offspring also. That could only be determined by controlled studies.
As for disturbing the hive microclimates, I know of no studies showing that beekeepers that use essential oils have larger mite populations than those that do not. The essential oils would cause the longest lasting disturbance that would be beekeeper induced.
42 + years - 24 colonies - IPM disciple - Naturally Skeptic