Document Detail


Ocular Anatomy and Retinal Photoreceptors in a Skink, the Sleepy Lizard (Tiliqua rugosa).
MedLine Citation:
PMID:  22847828     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The Australian sleepy lizard (Tiliqua rugosa) is a large day-active skink which occupies stable overlapping home ranges and maintains long-term monogamous relationships. Its behavioral ecology has been extensively studied, making the sleepy lizard an ideal model for investigation of the lizard visual system and its specializations, for which relatively little is known. We examine the morphology, density, and distribution of retinal photoreceptors and describe the anatomy of the sleepy lizard eye. The sleepy lizard retina is composed solely of photoreceptors containing oil droplets, a characteristic of cones. Two groups could be distinguished; single cones and double cones, consistent with morphological descriptions of photoreceptors in other diurnal lizards. Although all photoreceptors were cone-like in morphology, a subset of photoreceptors displayed immunoreactivity to rhodopsin-the visual pigment of rods. This finding suggests that while the morphological properties of rod photoreceptors have been lost, photopigment protein composition has been conserved during evolutionary history. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc.
Authors:
Shaun Td New; Jan M Hemmi; Gregory D Kerr; C Michael Bull
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-31
Journal Detail:
Title:  Anatomical record (Hoboken, N.J. : 2007)     Volume:  -     ISSN:  1932-8494     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101292775     Medline TA:  Anat Rec (Hoboken)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Wiley Periodicals, Inc.
Affiliation:
School of Biological Sciences, Flinders University, Adelaide, Australia; ARC Centre of Excellence in Vision Science, The Australian National University, Canberra, Australia; Evolution, Ecology and Genetics, Research School of Biology, The Australian National University, Canberra, Australia. shaun.new@anu.edu.au.
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