The interplay of directional information provided by unpolarised and polarised light in the heading direction network of the diurnal dung beetle Kheper lamarcki.

Autor:	Khaldy L; Lund Vision Group, Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden., Foster JJ; Zoology II, Biozentrum, University of Würzburg, Am Hubland, 97074 Würzburg, Germany., Yilmaz A; Lund Vision Group, Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden., Belušič G; Department of Biology, Biotechnical Faculty, University of Ljubljana, SI-1000 Ljubljana, Slovenia., Gagnon Y; Lund Vision Group, Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden., Tocco C; Lund Vision Group, Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden., Byrne MJ; School of Animal, Plant and Environmental Sciences, University of the Witswatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg 2000, South Africa., Dacke M; Lund Vision Group, Department of Biology, Lund University, Sölvegatan 35, 223 62 Lund, Sweden.; School of Animal, Plant and Environmental Sciences, University of the Witswatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg 2000, South Africa.
Jazyk:	angličtina
Zdroj:	The Journal of experimental biology [J Exp Biol] 2022 Feb 01; Vol. 225 (3). Date of Electronic Publication: 2022 Feb 10.
DOI:	10.1242/jeb.243734
Abstrakt:	The sun is the most prominent source of directional information in the heading direction network of the diurnal, ball-rolling dung beetle Kheper lamarcki. If this celestial body is occluded from the beetle's field of view, the distribution of the relative weight between the directional cues that remain shifts in favour of the celestial pattern of polarised light. In this study, we continue to explore the interplay of the sun and polarisation pattern as directional cues in the heading direction network of K. lamarcki. By systematically altering the intensity and degree of the two cues, we effectively change the relative reliability as they appear to the dung beetle. The response of the beetle to these modifications allows us to closely examine how the weighting relationship of these two sources of directional information is influenced and altered in the heading direction network of the beetle. We conclude that the process by which K. lamarcki relies on directional information is very likely done based on Bayesian reasoning, where directional information conveying the highest certainty at a particular moment is afforded the greatest weight. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2022. Published by The Company of Biologists Ltd.)
Databáze:	MEDLINE
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