Bob  wrote:

>In China I would guess a million cerana colonies are used for honey
production. 


China has 2 million colonies of A. cerana, some of that number still in
traditional tree hives or in wooden boxes with fixed frames. The honey yield
is usually smaller (10-20 kg per colony) due to its smaller colony size.
Workers perform the "cleaning dance" more often and groom each other more
rigorously, perhaps a reason why Varroa does not cause much damage in this
bee, which is the original host of the parasite.

http://znu.royal.4t.com/index.html

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