Epizootology of infectious and invasive diseases of Burzyan wild/feral bees.
Varroatosis was first registered in the reserve “Shulgan-Tash” in 1977-1979. Until 1986, the situation of the bee colonies with respect to the Varroa distructor within the range of Burzyan wild bees was considered relatively satisfactory. Levels of mites in the bee trees (Table 5) in most cases (8 out of 10) was lower than in the standard frame hives maintained in the same areas and same environmental conditions.
More often than not these differences were statistically significant, including for medium multi-year data - at the level of p <0.001.
In one case, when the mite level parameter was lower in apiary-kept bees, the mite levels for the year as a whole were low.
In addition, in the bee apiaries on the reserve therapeutic and preventive measures were routinely carried out over the study period (as opposed to the treatment-free wild/feral bees).
Without regular the use of veterinary drugs the differences of the compared groups would be even more pronounced.
The reasons for the greater stability of wild/feral bees can be several …
(GV: bee dwelling differences mentioned as possibly significant - I omit details)…
But the main reason why wild bees suffer less from invasions and adapt to them faster, is their more pronounced immunity due to the fact that hard natural selection without human intervention takes place.
(GV: feral bees’ swarming and absconding as other favorable factor to their survival are mentioned - I omit details ....)
More resistant wild bees, apparently, increase the stability of the managed bees when they are relocated <GV: to the apiaries> for breeding purposes.