Quokka (Setonix brachyurus)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Mammalia » Marsupialia » Australidelphia » Diprotodontia

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
Yellow cone565nm  565nm
Green cone505nm  505nm
Rod505nm  505nm
SWS cone425nm  425nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
Green cone
Yellow cone
  Photopic
Luminance (scotopic)
Rod   Scotopic
Yellow-Cyan
583nm - 537nm - 491nm
 
Yellow cone Green cone Photopic
Green-Indigo
525nm - 472nm - 424nm
 
Green cone
Yellow cone
SWS cone
(Rod)
Photopic

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Notes and References:

Ebeling W, Natoli RC, Hemmi JM (2010) Diversity of Color Vision: Not All Australian Marsupials Are Trichromatic. PLoS ONE 5(12): e14231. doi:10.1371/journal.pone.0014231

Arrese C .A., Oddy A. Y., Runham P. B., Hart, N. S., Shand, J., Hunt, D. M., Beazley, L. D. Cone topography and spectral sensitivity in two potentially trichromatic marsupials, the quokka (Setonix brachyurus) and quenda (Isoodon obesulus). Proceedings of the Royal Society B: Biological Sciences. 2005;272(1565):791-796. doi:10.1098/rspb.2004.3009.

Srinivasan, S., Carlo, C. N., & Stevens, C. F. (2015). Predicting visual acuity from the structure of visual cortex. Proceedings of the National Academy of Sciences 112(25), 7815-7820.

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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