So, I am assuming that the uptick in the volume of varroa during the August-September time frame might be because of the transition of the summer worker bee to the winter worker bee. The winter bee tends to have more fat, at least that is what I have read. Therefore, there might even be a correlation between the uptick during this time due to the bees developing more fat for the over wintering of the hive and a larger increase of the mite? Could this contribute to less ‘over wintering bees’ and hence the downfall of the hive due to lack of warmth?