Western ribbon snake (Thamnophis proximus)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Diapsida » Lepidosauromorpha » Squamata » Serpentes » Caenophidia » Colubridae » Natricinae

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
LWS cone544nm  544nm
Rh1 transmuted cone483nm  483nm
SWS1 cone365nm  387nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
LWS cone   Photopic
Lime-Aqua
560nm - 516nm - 471nm
 
LWS cone Rh1 transmuted cone Photopic
Green-UVA
544nm - 436nm - 386nm
 
LWS cone SWS1 cone Photopic

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Notes and References:

Hart NS, Coimbra JP, Collin SP, Westhoff G. Photoreceptor types, visual pigments, and topographic specializations in the retinas of hydrophiid sea snakes. J Comp Neurol. 2012 Apr 15; 520(6):1246-61. doi:10.1002/cne.22784

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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