Bill Truesdell wrote: > The shorter the generation, the faster the tolerance, which is why > scientists love to study fruit flies. Varroa routinely inbreed so in addition to having a short "cycle time" so to speak, they're particularly good at propagating "favorable" traits. Foundress mites typically enter singly into cells to breed. Only when 2 or more foundress mites enter a cell do their daughters have a chance of mating with males other than their own brothers. George- -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---