> May be a repeat in the discussion, but does anyone know how bees have
> become resistant to tracheal mites?  What the resistance mechanism is?
>

Bees are not resistant. Tracheal are easily controlled compared to Varroa,
plus many Varroa controls also keep Tracheal in check.

Here in Maine Tracheal is still found. Most who lose their bees to Tracheal
blame Varroa since no one ever loses their bees to Tracheal, which is why
it is seldom found now. :)

Bill Truesdell
Bath, Maine

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