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Hunting for natural enemies of the red imported fire ant is paying off for Agricultural Research Service (ARS) scientists. Their latest discovery — a new virus found in fire ants from Argentina — has the potential of becoming a biological control agent against the red imported fire ants infesting the U.S.

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ARS scientists are using a unique receptor interference technology that they have developed to target fire ants. The technology is environmentally friendly and can also be directed at other existing or emerging invasive pests to provide timely, cost-efficient pest control.

Venom is associated with being harmful, but red imported fire ants are using their venom for its medicinal benefits by sharing the toxic substance with their nestmates, according to a study published in the Journal of Insect Physiology. Agricultural Research Service (ARS) scientists from the agency's Biological Control of Pests Research Unit and Southern Insect Management Research Unit in Stoneville, Mississippi, discovered a new way that fire ants use their venom to prevent diseases in their colonies.

An invasive species of ant has been discovered in Europe for the first time. Nearly 90 nests of the red imported fire ant, or Solenopsis invicta, were found near the city of Syracuse, Italy, according to a new report published in the journal Current Biology. While the ants have occasionally been found in imported products in Europe, this is the first time they have become established in the wild.

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ARS researchers use biocontrol methods to manage fire ant populations.

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