Ball python (Python regius)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Diapsida » Lepidosauromorpha » Squamata » Serpentes » Pythonoidea » Pythonidae

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
IR receptor10000nm  10000nm
LWS cone550nm  550nm
Rh1 rod497nm  497nm
SWS1 cone361nm  370nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
LWS cone   Photopic
Luminance (scotopic)
Rh1 rod   Scotopic
Green-UVA
550nm - 424nm - 369nm
 
LWS cone SWS1 cone Photopic
Infrared
IR receptor   Photopic

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Notes and References:

Davies W., Cowing J., Bowmaker J.K., Carvalho L., Gower D., Hunt D. (2009) Shedding Light on Serpent Sight: The Visual Pigments of Henophidian Snakes. The Journal of Neuroscience 29: 7519-25. doi:10.1523/JNEUROSCI.0517-09.2009

Sillman AJ, Carver JK, Loew ER (1999) THE PHOTORECEPTORS AND VISUAL PIGMENTS IN THE RETINA OF A BOID SNAKE, THE BALL PYTHON (PYTHON REGIUS). The Journal of Experimental Biology 202: 1931–1938

Geng J, Liang D, Jiang K, Zhang P (2011) Molecular Evolution of the Infrared Sensory Gene TRPA1 in Snakes and Implications for Functional Studies. PLOS ONE 6(12): e28644. doi:10.1371/journal.pone.0028644

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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