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- Dacke, MarieLund University,Lunds universitet,Funktionell zoologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Functional zoology,Department of Biology,Faculty of Science (author)
A specialized dorsal rim area for polarized light detection in the compound eye of the scarab beetle Pachysoma striatum.
- Article/chapterEnglish2002
Publisher, publication year, extent ...
- Springer Science and Business Media LLC,2002
Numbers
- LIBRIS-ID:oai:lup.lub.lu.se:066630f2-163e-4e97-b9b9-1f52938ad44b
- https://lup.lub.lu.se/record/107841URI
- https://doi.org/10.1007/s00359-002-0295-9DOI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- 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.
Subject headings and genre
- NATURVETENSKAP Biologi Zoologi hsv//swe
- NATURAL SCIENCES Biological Sciences Zoology hsv//eng
- Scanning
- Electron
- Microscopy
- Contrast Sensitivity : physiology
- Beetles : ultrastructure
- Eye : anatomy & histology
- Beetles : physiology
- Animal
- Eye : ultrastructure
- Female
- Male
- Light
- Photic Stimulation : methods
Added entries (persons, corporate bodies, meetings, titles ...)
- Nordström, P (author)
- Scholtz, C H (author)
- Warrant, EricLund University,Lunds universitet,Funktionell zoologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Functional zoology,Department of Biology,Faculty of Science(Swepub:lu)zool-ewa (author)
- Funktionell zoologiBiologiska institutionen (creator_code:org_t)
Related titles
- In:Journal of Comparative Physiology A: Springer Science and Business Media LLC188:3, s. 211-2161432-1351
- In:Journal of Comparative Physiology A: Sensory, Neural, and Behavioral Physiology: Springer Science and Business Media LLC188:3, s. 211-2160340-7594
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