The interplay of directional information provided by unpolarised and polarised light in the heading direction network of the diurnal dung beetle Kheper lamarcki
(2022) In Journal of Experimental Biology 225(3).- Abstract
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... (More)
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.
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- author
- Khaldy, Lana LU ; Foster, James J. LU ; Yilmaz, Ayse ; Belušič, Gregor ; Gagnon, Yakir LU ; Tocco, Claudia LU ; Byrne, Marcus J. and Dacke, Marie LU
- organization
- publishing date
- 2022-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Compass, Degree of polarisation, Directional cues, Heading direction network, Navigation, Weighting
- in
- Journal of Experimental Biology
- volume
- 225
- issue
- 3
- article number
- jeb243734
- publisher
- The Company of Biologists Ltd
- external identifiers
-
- scopus:85124441353
- pmid:35037692
- ISSN
- 0022-0949
- DOI
- 10.1242/jeb.243734
- language
- English
- LU publication?
- yes
- id
- 3bc5e519-e441-4f90-ba8f-39025a482243
- date added to LUP
- 2023-01-19 12:00:52
- date last changed
- 2024-07-12 01:46:37
@article{3bc5e519-e441-4f90-ba8f-39025a482243,
abstract = {{<p>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.</p>}},
author = {{Khaldy, Lana and Foster, James J. and Yilmaz, Ayse and Belušič, Gregor and Gagnon, Yakir and Tocco, Claudia and Byrne, Marcus J. and Dacke, Marie}},
issn = {{0022-0949}},
keywords = {{Compass; Degree of polarisation; Directional cues; Heading direction network; Navigation; Weighting}},
language = {{eng}},
number = {{3}},
publisher = {{The Company of Biologists Ltd}},
series = {{Journal of Experimental Biology}},
title = {{The interplay of directional information provided by unpolarised and polarised light in the heading direction network of the diurnal dung beetle Kheper lamarcki}},
url = {{http://dx.doi.org/10.1242/jeb.243734}},
doi = {{10.1242/jeb.243734}},
volume = {{225}},
year = {{2022}},
}