SAN DIEGO, Calif. – A one-two punch by a gut parasite and viruses may help explain the mysterious decline in U.S. honeybees seen over the last four years.
Bees infected with both the fungal parasite Nosema ceranae and with any one of a handful of RNA viruses were much more likely to have come from hives on the decline than from healthy hives, researchers reported May 25 at a meeting of the American Society for Microbiology.
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