"River, do the Russians groom the mites off or are they just resistant to the diseases the mites transmit? I've always liked the concept but I also like the genetic diversity of drones available to breed queens when emergency or when they supersede failing queens. I bought a 100 of them a few years ago and I really liked the way they organized themselves for winter."
chip, yes, both.. this what i have seen them do......
1. very little mite problems
2. they actually do groom the mites off, and i have seen them chewing them or trying to chew them off sister bees
2. i have seen brood with mites on get carried out the front door.
3. diseases.......very resistant. i don't have the viruses others on the forum report, or from other keeps.
4. wintering; this is where they excel; very conservative on stores, overwinter in a smaller cluster you think would never make it, and with stores left in the hive. slow to build up in the spring, but when they do, they will explode, and catch up to or exceed other lines of bees.
i have been treatment free for the most part. i have treated maybe two or three times in 15 years? (using one treatment of apiguard), but haven't treated for some time now.
the queens sometimes are hard to find, (a little darker) and on darker comb but guess i have become accustomed to it?
i do have some literature chip, let me look for it, and i will post it for you.