Straight-line orientation in the woodland-living beetle Sisyphus fasciculatus

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

To transport their balls of dung along a constant bearing, diurnal savannah-living dung beetles rely primarily on the sun for compass information. However, in more cluttered environments, such as woodlands, this solitary compass cue is frequently hidden from view by surrounding vegetation. In these types of habitats, insects can, instead, rely on surrounding landmarks, the canopy pattern, or wide-field celestial cues, such as polarised skylight, for directional information. Here, we investigate the compass orientation strategy behind straight-line orientation in the diurnal woodland-living beetle Sisyphus fasciculatus. We found that, when manipulating the direction of polarised skylight, Si. fasciculatus responded to this change with a similar change in bearing. However, when the apparent position of the sun was moved, the woodland-living beetle did not change its direction of travel. In contrast, the savannah-living beetle Scarabaeus lamarcki responded to the manipulation of the solar position with a corresponding change in bearing. These results suggest that the dominant compass cue used for straight-line orientation in dung beetles may be determined by the celestial cue that is most prominent in their preferred habitat.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • University of the Witwatersrand
  • Stockholms universitet
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Etologi
  • Zoologi

Nyckelord

Originalspråkengelska
Sidor (från-till)327-335
Antal sidor9
TidskriftJournal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
Volym206
Utgåva nummer3
Tidigt onlinedatum2019 apr 6
StatusPublished - 2020 maj
PublikationskategoriForskning
Peer review utfördJa