Bacteria-infected nematodes may provide biological control of invasive European fire ants found in Maine, according to a University of Maine-led study. UMaine scientists found that dead fire ants, Myrmica rubra, in colonies on Mount Desert Island and Orono were infected by nematodes, or roundworms, harboring bacteria, particularly in their digestive tracts. Their findings led them read more Bacteria from nematodes could be used to kill fire ants, UMaine research reveals