Chihuahua night snake (Hypsiglena jani)

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

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
LWS transmuted rod536nm  536nm
Rh1 rod493nm  493nm
SWS1 transmuted rod358nm  368nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (scotopic)
Rh1 rod
LWS transmuted rod
  Scotopic
Lime-Aqua (scotopic)
561nm - 518nm - 475nm
 
LWS transmuted rod Rh1 rod Scotopic
Green-UV (scotopic)
536nm - 421nm - 368nm
 
LWS transmuted rod SWS1 transmuted rod Scotopic

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Notes and References:

Simões BF, Sampaio FL, Loew ER, Sanders KL, Fisher RN, Hart NS, Hunt DM, Partridge JD, Gower DJ (2016) Multiple rod–cone and cone–rod photoreceptor transmutations in snakes: evidence from visual opsin gene expression Proc. R. Soc. B 283(1823): 20152624. doi:10.1098/rspb.2015.2624

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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