Horseshoe crab (Limulus polyphemus)

Containing taxa: Animalia » Arthropoda » Chelicerata » Xiphosura

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
Green receptor525nm  525nm
UV receptor360nm  359nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance
Green receptor   Photopic
Green receptor - UV receptor
525nm - 416nm - 358nm
 
Green receptor UV receptor Photopic

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Notes and References:

Nolte, J. & Brown, J. E. The Spectral Sensitivities of Single Receptor Cells in the Lateral, Median, and Ventral Eyes of Normal and White-Eyed Limulus (1970) J. Gen. Physiol., 55 pp. 787-801

Herzog ED, Barlow RB (1992) The Limulus-eye view of the world. Vis. Neurosci, 9(6):571-580

Warrant 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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