Journal
VISION RESEARCH
Volume 48, Issue 21, Pages 2269-2274Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2008.07.004
Keywords
Fish vision; Visual pigments; Cones; Ocular media
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Funding
- Russian Foundation [07-04-00068]
- Far East Branch of RAS [06-I-OBN-093]
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Microspectrophotometry (MSP) revealed that surprisingly for a fully marine species, in summer, photoreceptors of the nearshore scorpaeniform fish known as the masked greenling, Hexagrammos octogrammus, contained exclusively, or presumably, porphyropsin with a small admixture of rhodopsin. As a result of this, the lambda(max) of the spectral sensitivity of the photoreceptors were significantly shifted to longer wavelengths as compared to the lambda(max) typical of marine shallow-water fishes, showing about 530 nm for rods and single cones, and 570/625 nm for double-cone members. These unique spectral shifts would permit a cone-driven wavelength discrimination in spite of high-density orange corneal filters which block light at lower wavelengths. (C) 2008 Elsevier Ltd. All rights reserved.
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