(Daphnia magna)

Containing taxa: Animalia » Arthropoda » Pancrustacea » Branchiopoda

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
Red receptor590nm590nm
Green receptor510nm510nm
Blue receptor434nm434nm
UV receptor348nm347nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance
 Green receptor
Red receptor		   Photopic
Orange-Cyan
601nm - 549nm - 499nm
  		Red receptor Green receptor Photopic
Green-UV
528nm - 467nm - 344nm
  		Green receptor
Red receptor		 UV receptor
Blue receptor		 Photopic
Indigo-UV
435nm - 387nm - 346nm
  		Blue receptor UV receptor Photopic

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Notes and References:

Smith, K. C. & Macagno, E. R. (1989) UV photoreceptors in the compound eye of Daphnia magna (Crustacea, Branchiopoda). A fourth spectral class in single ommatidia. J Comp Physiol A (1990) 166:597-606Warrant E.J., Nilsson D.-E. (1998) Absorption of White Light in Photoreceptors. Vision Res., Vol. 38, No. 2, pp. 195-207. PII: S0042-6989(97)00151-X

Stavenga D., Smits R.P., Hoenders B.J. (1993) Simple Exponential Functions Describing the Absorbance Bands of Visual Pigment Spectra. Vision Res. 33(8) pp. 1011-1017. doi:10.1016/0042-6989(93)90237-Q



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