Echidna (Tachyglossus aculeatus)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Mammalia » Monotremata

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
LWS cone565nm  565nm
Rod498nm  498nm
Blue cone451nm  453nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
LWS cone   Photopic
Luminance (scotopic)
Rod   Scotopic
Lime-Blue
566nm - 504nm - 451nm
 
LWS cone Blue cone
(Rod)
Photopic

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Notes and References:

Deeb, S. S. (2010). Visual pigments and colour vision in marsupials and monotremes. In Marsupial genetics and genomics (pp. 403-414). Springer Netherlands.

Bickelmann, C., Morrow, J. M., Mueller, J., & Chang, B. S. (2012). Functional characterization of the rod visual pigment of the echidna (Tachyglossus aculeatus), a basal mammal. Visual neuroscience, 29(4-5), 211-217.

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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