>by which mechanism(s) does varroa transmit the viruses to the bees?

> injects directly into hemolynph?


Varroa doesn't have sucking/injecting mouthparts.  In the process of
opening a feeding wound, some virions are apparently transmitted.  Virus
transmission appears to be more intense if the virus has replicated in the
mite.

It also appears that the immune suppressors that varroa puts into the
wound, along with the associated bacterial infection, induces some existing
latent virus infections to come out of dormancy.


--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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