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A nest is constructed out of the living ant workers' own bodies to protect the queen and larvae, and is later deconstructed as the ants move on. [1] [2] Army ants can forage and feed on insects over large areas of more than 1,800 square yards in a single day, so they must constantly move to new areas. During what is called the migratory phase ...
An ant starts to crawl along a taut rubber rope 1 km long at a speed of 1 cm per second (relative to the rubber it is crawling on). At the same time, the rope starts to stretch uniformly at a constant rate of 1 km per second, so that after 1 second it is 2 km long, after 2 seconds it is 3 km long, etc.
The chemical trails may allow followers to stop and examine landmarks before rejoining the leader. Leaders, which are the teachers, are more likely to lay trails during forward tandem runs than during reverse tandem runs. Most leaders deploy their gaster down during forward tandem runs, while the followers do not. During reverse tandem runs ...
Colonies of army ants are large compared to the colonies of other Formicidae. Colonies can have over 15 million workers and can transport 3000 prey (items) per hour during the raid period. [14] [20] When army ants forage, the trails that are formed can be over 20 m (66 ft) wide and over 100 m (330 ft) long. [20]
Pharaoh ants use a positive feedback system of foraging. Each morning, scouts will search for food. When one finds it, it will immediately return to the nest. This causes several ants to follow the successful scout's trail back to the food source. Soon, a large group will be upon the food.
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In the natural world, ants of some species (initially) wander randomly, and upon finding food return to their colony while laying down pheromone trails. If other ants find such a path, they are likely to stop travelling at random and instead follow the trail, returning and reinforcing it if they eventually find food (see Ant communication).