We just completed a 3 yr study of the cumulative efffects of stressors on bees with varying levels of tracheal and varroa mites. We are working up the articles, but the short story is that the more stress, the more bees with mites and the higher the numbers of mites. Jerry J. Bromenshenk The University of Montana-Missoula [log in to unmask] P.S. We will soon launch a home page describing our work (a prototype page is currently under review by our sponsors.