Document Detail


Characterization of photoreceptor cell types in the little brown bat Myotis lucifugus (Vespertilionidae).
MedLine Citation:
PMID:  19720154     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report the expression of three visual opsins in the retina of the little brown bat (Myotis lucifugus, Vespertilionidae). Gene sequences for a rod-specific opsin and two cone-specific opsins were cloned from cDNA derived from bat eyes. Comparative sequence analyses indicate that the two cone opsins correspond to an ultraviolet short-wavelength opsin (SWS1) and a long-wavelength opsin (LWS). Immunocytochemistry using antisera to visual opsins revealed that the little brown bat retina contains two types of cone photoreceptors within a rod-dominated background. However, unlike other mammalian photoreceptors, M. lucifugus cones and rods are morphologically indistinguishable by light microscopy. Both photoreceptor types have a thin, elongated outer segment. Using microspectrophotometry we classified the absorption spectrum for the ubiquitous rods. Similar to other mammals, bat rhodopsin has an absorption peak near 500 nm. Although we were unable to confirm a spectral range, cellular and molecular analyses indicate that M. lucifugus expresses two types of cone visual pigments located within the photoreceptor layer. This study provides important insights into the visual capacity of a nocturnal microchiropteran species.
Authors:
K D Feller; S Lagerholm; R Clubwala; M T Silver; D Haughey; J M Ryan; E R Loew; M E Deutschlander; K L Kenyon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-29
Journal Detail:
Title:  Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology     Volume:  154     ISSN:  1879-1107     ISO Abbreviation:  Comp. Biochem. Physiol. B, Biochem. Mol. Biol.     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-10-12     Completed Date:  2010-01-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9516061     Medline TA:  Comp Biochem Physiol B Biochem Mol Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  412-8     Citation Subset:  IM    
Affiliation:
Department of Biology, Hobart and William Smith Colleges, Geneva, New York, 14456, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Antibodies / analysis,  immunology
Chiroptera / metabolism*
Gene Expression Regulation
Humans
Microspectrophotometry
Opsins / genetics,  immunology
Photoreceptor Cells, Vertebrate / metabolism*
Retina / metabolism
Chemical
Reg. No./Substance:
0/Antibodies; 0/Opsins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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