The relationship between lens transmission and opsin gene expression in cichlids from Lake Malawi

Hofmann, Christopher M., O'Quin, Kelly E., Marshall, Justin and Carleton, Karen L. (2010) The relationship between lens transmission and opsin gene expression in cichlids from Lake Malawi. Vision Research, 50 3: 357-363. doi:10.1016/j.visres.2009.12.004


Author Hofmann, Christopher M.
O'Quin, Kelly E.
Marshall, Justin
Carleton, Karen L.
Title The relationship between lens transmission and opsin gene expression in cichlids from Lake Malawi
Journal name Vision Research   Check publisher's open access policy
ISSN 0042-6989
1878-5646
Publication date 2010-02-08
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.visres.2009.12.004
Volume 50
Issue 3
Start page 357
End page 363
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2011
Language eng
Abstract The lens plays an important role in regulating the wavelengths of light that reach the retina. However, the evolutionary relationship between lens transmission and retinal sensitivity remains cloudy at best. We examined the relationship between lens transmission and opsin gene expression in a group of rapidly radiating cichlids from East Africa. Lens transmission was bimodal, either cutting off around 360 or 400 nm, and appeared to be quite labile evolutionarily. We found a strong correlation between lens transmission and SWS1 (UV) opsin gene expression, suggesting that UV transmitting lenses are adaptive in cichlids. Species which expressed high levels of SWS2B (violet) opsin varied in their lens transmission while most species that expressed high levels of SWS2A (blue) opsin had UV blocking lenses. In no instance did lens transmission appear to limit retinal sensitivity. Finally, the strong correlation that we observe between SWS1 expression and lens transmission suggests that these two traits might be coupled genetically. © 2009 Elsevier Ltd. All rights reserved.
Keyword Lens
Opsin
Ultraviolet vision
Cichlid
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 11 December 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Queensland Brain Institute Publications
 
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Created: Mon, 18 Jan 2010, 15:58:13 EST by Debra McMurtrie on behalf of Queensland Brain Institute