In "Biology and control of Varroa destructor" Journal of Invertebrate
Pathology 103 (2010) S 96-119 (a link to the paper was posted on this
list) Rosenkranz et al wrote (page 101 lower left):
In the original host A. cerana the reproduction of Varroa mites (V.
jacobsoni and V. destructor) is limited to drone brood for yet unknown
reasons (Anderson 2000; Boot 1996; Garrido 2004; Rath 1999)
I see two possibilities:
- the female A. cerana larva has something that A. mellifera has not,
maybe some pheromone that repels varroa.
- Varroa has changed when is jumped to A. mellifera.
Has there been an experiment of bringing a varroa strain that crashed
our bees back to A. cerana to see if they now also crash A. cerana?
How could such experiment be conducted environmentally safe?
Jorg
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