James Kilty said:

> I think we are using the word re-invasion here in two ways. I
> understand it to mean a new invasion (large numbers) from
> other colonies, once you have reduced numbers by treatment
> (hence the "re" "and invasion"), either from robbing or
> absconding/breakup of overloaded colonies.

Yes, I meant all of it - drifting, robbing, and such.  I am not
sure if the USA study had any colonies that "absconded".
Did the one you mentioned?

I know for sure that robbing is considered a valid vector for
the spread of mites back to the robbing colony.

> This often happens in autumn, hence the idea of re-invasion and
> well defined by Peter as such. Drifting will tend to equalise mites
> between colonies in an apiary.

Agreed.

Wyatt will publish his results when he is darned good and ready,
and I should not speculate about what remains, as yet, unpublished.
I am commenting only on what was presented at various meetings,
and what has been said to me directly by the researcher.

                jim

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