Dr Smith said that, while stingless Australian bees were not susceptible to the varroa destructor, there was still cause for concern.
“Something that can happen — when you have populations of honey bees with varroa mite, they have a higher abundance of viruses … and there’s evidence some of those can spill over to native bees,” Dr Smith said.
“It’s possible we could get more unhealthy native bees if we have more unhealthy European honey bees as a result of .
“With these unknown questions about how European honey bee diseases can affect native bees, there is some need to be concerned.”