Fig. 1

A The experimental set-up. The container (left) box was defined as the central nest and the planar arena was used as the foraging site (right). The container and the arena were connected by 1 m length of polygon tube. A camcorder was mounted on top of entry point into the arena, which allowed observation of termites from the piece of wood to the entry point. B Examples of variable and how each variable was calculated. After introduction of marked workers into the foraging site, the first exit time was excluded from the data and the time until the next entry was measured