Desert ants Cataglyphis fortis use self-induced optic flow to measure distances travelled

@article{Ronacher1995DesertAC,
  title={Desert ants Cataglyphis fortis use self-induced optic flow to measure distances travelled},
  author={Bernhard Ronacher and R{\"u}diger Wehner},
  journal={Journal of Comparative Physiology A},
  year={1995},
  volume={177},
  pages={21-27}
}
While foraging, desert ants of the genus Cataglyphis use a vector navigation (route integration) system for homing. Any vector navigation system requires that the animal is able to evaluate the angles steered and the distances travelled. Here we investigate whether the ants acquire the latter information by monitoring self-induced optic flow. To answer this question, the animals were trained and tested within perspex channels in which patterns were presented underneath a transparent walking… 

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