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A specialized dorsal rim area for polarized light detection in the compound eye of the scarab beetle Pachysoma striatum.

Dacke, Marie LU ; Nordström, P; Scholtz, C H and Warrant, Eric LU (2002) In Journal of Comparative Physiology A 188(3). p.211-216
Abstract
Many animals have been shown to use the pattern of polarized light in the sky as an optical compass. Specialised photoreceptors are used to analyse this pattern. We here present evidence for an eye design suitable for polarized skylight navigation in the flightless desert scarab Pachysoma striatum. Morphological and electrophysiological studies show that an extensive part of the dorsal eye is equivalent to the dorsal rim area used for polarized light navigation in other insects. A polarization-sensitivity of 12.8 (average) can be recorded from cells sensitive to the ultraviolet spectrum of light. Features commonly known to increase the visual fields of polarization-sensitive photoreceptors, or to decrease their spatial resolution, are not... (More)
Many animals have been shown to use the pattern of polarized light in the sky as an optical compass. Specialised photoreceptors are used to analyse this pattern. We here present evidence for an eye design suitable for polarized skylight navigation in the flightless desert scarab Pachysoma striatum. Morphological and electrophysiological studies show that an extensive part of the dorsal eye is equivalent to the dorsal rim area used for polarized light navigation in other insects. A polarization-sensitivity of 12.8 (average) can be recorded from cells sensitive to the ultraviolet spectrum of light. Features commonly known to increase the visual fields of polarization-sensitive photoreceptors, or to decrease their spatial resolution, are not found in the eye of this beetle. We argue that in this insect an optically unspecialised area for polarized light detection allows it not be used exclusively for polarized light navigation. (Less)
Please use this url to cite or link to this publication:
author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Scanning, Electron, Microscopy, Contrast Sensitivity : physiology, Beetles : ultrastructure, Eye : anatomy & histology, Beetles : physiology, Animal, Eye : ultrastructure, Female, Male, Light, Photic Stimulation : methods
in
Journal of Comparative Physiology A
volume
188
issue
3
pages
211 - 216
publisher
Springer
external identifiers
  • wos:000176161300007
  • pmid:11976889
  • scopus:0036557654
ISSN
1432-1351
DOI
10.1007/s00359-002-0295-9
language
English
LU publication?
yes
id
066630f2-163e-4e97-b9b9-1f52938ad44b (old id 107841)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11976889&dopt=Abstract
date added to LUP
2007-07-23 10:38:29
date last changed
2017-10-22 04:35:30
@article{066630f2-163e-4e97-b9b9-1f52938ad44b,
  abstract     = {Many animals have been shown to use the pattern of polarized light in the sky as an optical compass. Specialised photoreceptors are used to analyse this pattern. We here present evidence for an eye design suitable for polarized skylight navigation in the flightless desert scarab Pachysoma striatum. Morphological and electrophysiological studies show that an extensive part of the dorsal eye is equivalent to the dorsal rim area used for polarized light navigation in other insects. A polarization-sensitivity of 12.8 (average) can be recorded from cells sensitive to the ultraviolet spectrum of light. Features commonly known to increase the visual fields of polarization-sensitive photoreceptors, or to decrease their spatial resolution, are not found in the eye of this beetle. We argue that in this insect an optically unspecialised area for polarized light detection allows it not be used exclusively for polarized light navigation.},
  author       = {Dacke, Marie and Nordström, P and Scholtz, C H and Warrant, Eric},
  issn         = {1432-1351},
  keyword      = {Scanning,Electron,Microscopy,Contrast Sensitivity : physiology,Beetles : ultrastructure,Eye : anatomy & histology,Beetles : physiology,Animal,Eye : ultrastructure,Female,Male,Light,Photic Stimulation : methods},
  language     = {eng},
  number       = {3},
  pages        = {211--216},
  publisher    = {Springer},
  series       = {Journal of Comparative Physiology A},
  title        = {A specialized dorsal rim area for polarized light detection in the compound eye of the scarab beetle Pachysoma striatum.},
  url          = {http://dx.doi.org/10.1007/s00359-002-0295-9},
  volume       = {188},
  year         = {2002},
}