On Sun, Jan 22, 2017 at 3:02 PM, randy oliver wrote:

> >
> >
> And as Juanse pointed out, African bees and perhaps Apis cerana appear to
> be more resistant to viruses.  Two researchers are currently working on a
> paper on the subject, since the immune responses of various races of bees
> to viruses are quite different.
>

On the contrary Randy, as I understand, scutellata and cerana are more
subject to die in larval stage when virus are present, therefore, higienic
behaviour of bees can operate and remove those larvas. In the case of
european HB larva do not die as fast as need and therefore varroa can
finish its reproduction cycle.

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