Ants On Rafts

Fire ant raft
Photo: PNAS

Fire ants are native to areas that flood and respond to flooding by making rafts. The rafts form as the result of stereotypic behaviors of individuals. Fire ants have larger workers (majors) and smaller workers (minors). Individual ants in water will float on their ventral side and paddle with their legs. They are only capable of paddling in the forward direction. The majors are strong paddlers that do not stop on contact. When two majors collide, they often push…

Source: Living With Insects Blog

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