Tammar wallaby (Macropus eugenii)

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
Rod500nm  500nm
SWS cone424nm  424nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
Green cone
Yellow cone
  Photopic
Luminance (scotopic)
Rod   Scotopic
Yellow-Green2
583nm - 537nm - 491nm
 
Yellow cone Green cone Photopic
Green-Indigo
524nm - 471nm - 423nm
 
Green cone
Yellow cone
SWS cone
(Rod)
Photopic

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Notes and References:

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.

Deeb, S., Wakefield, M. J., Tada, T., Marotte, L., Yokoyama, S. & Marshall Graves J. A. (2003) The cone visual pigments of an Australian marsupial, the tammar wallaby (Macropus eugenii): sequence, spectral tuning, and evolution. Mol. Biol. Evol. 20, 1642-1649.

Ghim MM, Hodos W (2006) Spatial contrast sensitivity of birds. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 192(5):523-34. doi:10.1007/s00359-005-0090-5

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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