Doomed ants send a final scent to save their colony

Doomed ants send a final scent to save their colony | ScienceDaily Science News from research organizations Doomed ants send a final scent to save their colony When ant pupae face a deadly infection, they release a scent that alerts the colony. Date: December 3, 2025 Source: Institute of Science and Technology Austria Summary: Ant pupae that are fatally sick don’t hide their condition; instead, they release a special scent that warns the rest of the colony. This signal prompts worker ants to open the pupae’s cocoons and disinfect them with formic acid, stopping the infection before it can spread. Although the treatment kills the sick pupa, it protects the colony and helps ensure its long-term survival. Researchers found that only pupae too sick to recover send this scent, showing just how finely tuned the colony’s early-warning system is. Share: Facebook Twitter Pinterest LinkedIN Email FULL STORY When an ant pupa signals its imminent death caused by an incurable infection, worker ants unpack it from its cocoon and disinfect it, leading to its demise. Credit: © Christopher D. Pull / ISTA Ant societies behave like tightly integrated "superorganisms," where thousands of individuals work together in a way that resembles the coordinated activity of cells in a body. Researchers at the Institute of Science and Technology Austria (ISTA) have found that terminally ill ant brood release a distinctive odor, similar to the way infected body cells send out distress signals. This scent acts as an early alert that helps the colony quickly detect and eliminate infections before they spread. The findings were published in Nature Communications . In many social animals, individuals often hide signs of illness to avoid being pushed aside by the group. Ant pupae take a very different route. When facing an infection they cannot survive, they produce a chemical alarm that warns their nestmates of the danger they represent. Worker Ants Respond to the Warning Signal As soon as w