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Stellar performance...
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Foster, James J.Lund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups
(author)
Stellar performance : Mechanisms underlying milky way orientation in dung beetles
- Article/chapterEnglish2017
Publisher, publication year, extent ...
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2017-04-05
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The Royal Society,2017
Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:6d02df52-4841-4ac3-a4c1-c5a0ed22e082
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https://lup.lub.lu.se/record/6d02df52-4841-4ac3-a4c1-c5a0ed22e082URI
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https://doi.org/10.1098/rstb.2016.0079DOI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Nocturnal dung beetles (Scarabaeus satyrus) are currently the only animals that have been demonstrated to use the Milky Way for reliable orientation. In this study, we tested the capacity of S. satyrus to orient under a range of artificial celestial cues, and compared the properties of these cues with images of the Milky Way simulated for a beetle’s visual system. We find that the mechanism that permits accurate stellar orientation under the Milky Way is based on an intensity comparison between different regions of the Milky Way. We determined the beetles’ contrast sensitivity for this task in behavioural experiments in the laboratory, and found that the resulting threshold of 13% is sufficient to detect the contrast between the southern and northern arms of the Milky Way under natural conditions. This mechanism should be effective under extremely dim conditions and on nights when the Milky Way forms a near symmetrical band that crosses the zenith. These findings are discussed in the context of studies of stellar orientation in migratory birds and itinerant seals.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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el Jundi, BasilLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups(Swepub:lu)biol-bie
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Smolka, JochenLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups(Swepub:lu)cob-jcs
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Khaldy, LanaLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups(Swepub:lu)biol-lkl
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Nilsson, Dan EricLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups(Swepub:lu)zool-dni
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Byrne, Marcus JUniversity of the Witwatersrand
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Dacke, MarieLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups,University of the Witwatersrand(Swepub:lu)zool-mda
(author)
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SyngruppenForskargrupper vid Lunds universitet
(creator_code:org_t)
Related titles
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In:Philosophical Transactions of the Royal Society B: Biological Sciences: The Royal Society372:17170962-84361471-2970
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