| The retinal topography of three species of coleoid cephalopod: significance for perception of polarized light. | |
| | |
MedLine Citation:
|
PMID: 21282176 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The retinal topography of three species of coleoid cephalopod (one cuttlefish, one squid and one octopus) was investigated to examine and compare the structure, density and organization of the photoreceptors. The aim was to determine if there were areas of increased cell density and/or cell specialization that might be related to lifestyle or phylogeny. The orientation of photoreceptors around the curved surface of the retina was also mapped to reveal how the overall arrangement of cell microvilli might enable the perception of polarized light stimuli. It was found that all species possessed an increase in photoreceptor density in a horizontal streak approximately placed at the position of a potential horizon in the habitat. The overall arrangement of photoreceptor microvillar arrangements followed lines of latitude and longitude in a global projection that has been rotated by 90°. This arrangement seems to map polarization sensitivities on the outside world in a vertical and horizontal grid. The potential significance of this and other retinal specializations is discussed in the context of phylogenetic and habitat differences between species. |
| | |
Authors:
|
Christopher M Talbot; Justin N Marshall |
Related Documents
:
|
7159206 - Slow brain potentials after withdrawal of control. 12706216 - Effects of temporal encoding on auditory object formation: a mismatch negativity study. 21117746 - Evidence for basal distortion-product otoacoustic emission components. 22331426 - Motion as manipulation: implementation of force-motion analogies by event-file binding ... 19355096 - A simple experiment for understanding resonant air columns. 18336026 - Identifying and alleviating electrochemical side-reactions in light-emitting electroche... |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: Philosophical transactions of the Royal Society of London. Series B, Biological sciences Volume: 366 ISSN: 1471-2970 ISO Abbreviation: Philos. Trans. R. Soc. Lond., B, Biol. Sci. Publication Date: 2011 Mar |
Date Detail:
|
Created Date: 2011-02-01 Completed Date: 2011-07-13 Revised Date: 2012-03-12 |
Medline Journal Info:
|
Nlm Unique ID: 7503623 Medline TA: Philos Trans R Soc Lond B Biol Sci Country: England |
Other Details:
|
Languages: eng Pagination: 724-33 Citation Subset: IM |
Affiliation:
|
Sensory Neurobiology Group, School of Biomedical Science and Queensland Brain Institute, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia. chris.talbot@uq.edu.au |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Cephalopoda / anatomy & histology* Ecosystem Light* Photoreceptor Cells / cytology*, ultrastructure Phylogeny Retina / anatomy & histology*, cytology, ultrastructure |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Polarized iridescence of the multilayered elytra of the Japanese jewel beetle, Chrysochroa fulgidiss...
Next Document: Behavioural relevance of polarization sensitivity as a target detection mechanism in cephalopods and...