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First published online May 18, 2006
Journal of Experimental Biology 209, 2034-2041 (2006)
Published by The Company of Biologists 2006
doi: 10.1242/jeb.02171
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Spectral sensitivity of the two-spotted goby Gobiusculus flavescens (Fabricius): a physiological and behavioural study

Anne C. Utne-Palm1,* and James K. Bowmaker2

1 Department of Biology, University of Bergen, PO Box 7800, N-5020 Bergen, Norway
2 Division of Visual Science, Institute of Ophthalmology, University College London, London, UK


Figure 1
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  		Fig. 1. Absorbance spectra of rods and cones, and lens transmission. (A) Long-wave-sensitive (LWS) cones, {lambda}max=553 nm; (B) short-wave-sensitive (SWS) cones, {lambda}max=456 nm; (C) middle-wave-sensitive (MWS) cones, {lambda}max=531 nm; (D) rods, {lambda}max=508 nm. Open symbols, pre bleach spectrum; closed symbols, after a white light bleach. Solid lines are visual pigment templates (Govardovskii et al., 2000Go). (E) Distribution histogram of the {lambda}max of individual cells. Cones, open bars; rods, black and shaded bars (bin size 2 nm). (F) Mean lens transmission of both lenses from a single fish.

 

Figure 2
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  		Fig. 2. (A) Reaction distance at irradiances of 0.5 µmol m-2 s-1 (open symbols) and 0.015 µmol m-2 s-1 (closed symbols). Values are means ± s.d. Downward pointing arrows indicate the {lambda}max of the three cone pigments; upward pointing arrow, that of the rods. (B) Optomotor responses. The maximum responses of the fish are indicated by filled symbols and the average responses by open symbols. Values are means ± s.d. Downward pointing arrows indicate the {lambda}max of the three cone pigments.

 




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