Journal of comparative physiology

, Volume 128, Issue 3, pp 189–192 | Cite as

Key stimuli of prey for toads (Bufo bufo L.): Configuration and movement patterns

  • H. -W. Borchers
  • H. Burghagen
  • J. -P. Ewert
Article

Summary

The ability of the Common ToadBufo bufo (L.) to distinguish between a worm-like and an antiworm-like (e.g., a bar at right angles to its direction of motion) moving stripe is not generally altered by movement dynamics, such as velocity of motion or by particular movement patterns—so far as has been investigated. A small square stimulus, however, with its “indifferent” shape is more attractive as prey for the toad when displaced in a stepwise manner, rather than moved at corresponding continuous (constant) velocity. Step frequencies of 1 to 2 cps were found to have optimal releasing values.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ewert, J.-P.: Verhaltensphysiologische Untersuchungen zum „stroboskopischen Sehen“ der Erdkröte (Bufo bufo L.). Pflügers, Arch.299, 158–166 (1968)Google Scholar
  2. Ewert, J.-P.: The visual system of the toad: Behavioral and physiological studies on a pattern recognition system. In: The amphibian visual system. Fite, K.V. (ed.). New York, San Francisco, London: Academic Press 1976Google Scholar
  3. Grüsser, O.-J., Finkelstein, D., Grüsser-Cornehls, U.: The effect of stimulus velocity in the response of movement sensitive neurons of the frog's retina. Pflügers Arch.300, 49–66 (1968)Google Scholar
  4. Grüsser-Cornehls, U.: Response of movement-detecting neurons of the frog's retina to moving patterns under stroboscopic illumination. Pflügers Arch.303, 1–13 (1968)Google Scholar
  5. Lettvin, J.Y., Maturana, H.R., McCulloch, W.S., Pitts, W.H.: What the frog's eye tells the frog's brain. Proc. Inst. Radio Engrs. N.Y.47, 1940–1951 (1959)Google Scholar
  6. Roth, G.: The role of stimulus movement patterns in the prey catching behavior ofHydromantes genei (Amphibia, Plethodontidae). J. comp. Physiol.123, 261–264 (1978)Google Scholar

Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • H. -W. Borchers
    • 1
  • H. Burghagen
    • 1
  • J. -P. Ewert
    • 1
  1. 1.Neuroethology and Biocybernetic LaboratoriesUniversity of KasselKasselFederal Republic of Germany

Personalised recommendations