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First published online January 3, 2006
Journal of Experimental Biology 209, 314-319 (2006)
Published by The Company of Biologists 2006
doi: 10.1242/jeb.01984
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The effect of elevated hydrostatic pressure on the spectral absorption of deep-sea fish visual pigments

J. C. Partridge1,*, E. M. White1 and R. H. Douglas2

1 School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK
2 Applied Vision Research Centre, The Henry Wellcome Laboratories for Vision Sciences, Department of Optometry and Visual Science, City University, Northampton Square, London EC1V OHB, UK



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  		Fig. 1. (A) Absorbance spectra of visual pigment extracted from the retina of Bathysaurus ferox measured in unbleached and bleached states at pressures of 0.1, 9.0, 20.0, 31.0 and 45.8 MPa. For clarity of presentation all scans have been zeroed at 700 nm. (B) Difference spectra for each pressure constructed using the curves shown in Fig. 1A. Scans have been zeroed at the minimum long-wave absorbance (see Hart et al., 2000Go).

 


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  		Fig. 2. (A) Relationship between {lambda}max and pressure for the visual pigment of the animal (Bathysaurus ferox) whose visual pigment difference spectra are shown in Fig. 1B. The data are fitted by the following linear regression: {lambda}max=0.021943P+484.6437; where P is the pressure in MPa. (B) Relationship between absorbance at the {lambda}max and pressure for the visual pigment of the animal (Bathysaurus ferox) whose visual pigment difference spectra are shown in Fig. 1B. The data are fitted by the following linear regression: A=5.806x10-5P+0.149787, where A is the absorbance at the {lambda}max and P is the pressure in MPa.

 

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© The Company of Biologists Ltd 2006