Eleven species of wild pollinators in the United States have turned up carrying some of the viruses known to menace domestic honeybees, possibly picked up via flower pollen.

Most of these native pollinators haven’t been recorded with honeybee viruses before, according to Diana Cox-Foster of Penn State University in University Park. The new analysis raises the specter of diseases swapping around readily among domestic and wild pollinators, Cox-Foster and her colleagues report online December 22 in PLoS ONE.

Gone are any hopes that viral diseases in honeybees will stay in honeybees, she says. “Movement of any managed pollinator may introduce viruses.”

A pattern showed up in the survey that fits that unpleasant scenario. Researchers tested for five viruses in pollinating insects and in their pollen hauls near apiaries in Pennsylvania, New York and Illinois. Israeli acute parasitic virus showed up in wild pollinators near honeybee installations carrying the disease but not near apiaries without the virus.

In domestic honeybees, such viruses rank as one of the possible contributors to the still-mysterious malady known as colony collapse disorder that abruptly wipes out a hive’s workforce, Cox-Foster says.

Now she and others are looking at what the viruses do to wild pollinators. Preliminary results of ongoing lab tests show some disturbing effects, Cox-Foster says. “Is this part of the reason why we’ve seen the decline of native pollinator species in the U.S.?” she muses.