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Spectral absorbance changes in the violet/blue sensitive cones of the juvenile pollack,Pollachius pollachius


Using the technique of microspectrophotometry (MSP) we have found that the short wavelength sensitive cones in the retina of the pollack (Pollachius pollachius) shift in spectral absorption from a maximum (λ max) at about 420 nm in the violet to about 460 nm in the blue. This shift is not due to chromophore replacement, which substitutes rhodopsin for a porphyropsin, but is more likely to be due to a change in the opsin. The shift appears to be progressive rather than abrupt and coincides with a change in lifestyle of the fish.

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SL :

standard length

UV :



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Shand, J., Partridge, J.C., Archer, S.N. et al. Spectral absorbance changes in the violet/blue sensitive cones of the juvenile pollack,Pollachius pollachius . J. Comp. Physiol. 163, 699–703 (1988). https://doi.org/10.1007/BF00603854

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  • Retina
  • Short Wavelength
  • Absorbance Change
  • Spectral Absorption
  • Spectral Absorbance