Journal of Comparative Physiology A

, Volume 199, Issue 1, pp 17–23 | Cite as

Dung beetles ignore landmarks for straight-line orientation

  • Marie Dacke
  • Marcus Byrne
  • Jochen Smolka
  • Eric Warrant
  • Emily Baird
Original Paper

Abstract

Upon locating a suitable dung pile, ball-rolling dung beetles shape a piece of dung into a ball and roll it away in a straight line. This guarantees that they will not return to the dung pile, where they risk having their ball stolen by other beetles. Dung beetles are known to use celestial compass cues such as the sun, the moon and the pattern of polarised light formed around these light sources to roll their balls of dung along straight paths. Here, we investigate whether terrestrial landmarks have any influence on straight-line orientation in dung beetles. We find that the removal or re-arrangement of landmarks has no effect on the beetle’s orientation precision. Celestial compass cues dominate straight-line orientation in dung beetles so strongly that, under heavily overcast conditions or when prevented from seeing the sky, the beetles can no longer orient along straight paths. To our knowledge, this is the only animal with a visual compass system that ignores the extra orientation precision that landmarks can offer.

Keywords

Dung beetle Scarabaeidae Scarabaeinae Landmark Orientation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Marie Dacke
    • 1
    • 2
  • Marcus Byrne
    • 2
  • Jochen Smolka
    • 1
  • Eric Warrant
    • 1
  • Emily Baird
    • 1
  1. 1.Department of Biology, Lund Vision GroupLund UniversityLundSweden
  2. 2.School of Animal, Plant and Environmental SciencesUniversity of the WitwatersrandWitsSouth Africa

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