Journal of Insect Behavior

, Volume 10, Issue 1, pp 145–163

Motion parallax as a source of distance information in locusts and mantids

  • Karl Kral
  • Michael Poteser

DOI: 10.1007/BF02765480

Cite this article as:
Kral, K. & Poteser, M. J Insect Behav (1997) 10: 145. doi:10.1007/BF02765480


This review article is devoted to results on distance measurement in locusts (e.g., Wallace, 1959; Collett, 1978; Sobel, 1990) and mantids. Before locusts or mantids jump toward a stationary object, they perform characteristic pendulum movements with the head or body, called peering movements, in the direction of the object. The fact that the animals over- or underestimate the distance to the object when the object is moved with or against the peering movement, and so perform jumps that are too long or short, would seem to indicate that motion parallax is used in this distance measurement. The behavior of the peering parameters with different object distances also indicates that not only retinal image motion but also the animal’s own movement is used in calculating the distance.

Key words

locusts mantids spatial vision distance estimation peering motion parallax 

Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • Karl Kral
    • 1
  • Michael Poteser
    • 1
  1. 1.Institut für ZoologieKarl-Franzens-Universität GrazGrazAustria

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