Red-eared slider (Trachemys scripta elegans)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Diapsida » Testudines

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
Red cone617nm530nm600nm631nm
Double cone617nm408nm445nm617nm
Green cone515nm475nm535nm547nm
Rod518nm518nm
Blue cone458nm408nm440nm468nm
Vio/UV cone360nm  359nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
Double cone   Photopic
Luminance (scotopic)
Rod   Scotopic
Red-Lime
633nm - 592nm - 547nm
 
Red cone Green cone Photopic
Green-Blue
549nm - 519nm - 468nm
 
Green cone
Red cone
Blue cone Photopic
Blue-UV
468nm - 418nm - 360nm
 
Blue cone Vio/UV cone Photopic

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Notes and References:

LOEW, E., & GOVARDOVSKII, V. (2001). Photoreceptors and visual pigments in the red-eared turtle, Trachemys scripta elegans. Visual Neuroscience, 18(5), 753-757. doi:10.1017/S0952523801185081

P.A. Liebman, A.M. Granda, Microspectrophotometric measurements of visual pigments in two species of turtle, Pseudemys scripta elegans and Chelonia mydas mydas, Vision Research, Volume 11, Issue 2, 1971, Pages 105-114, ISSN 0042-6989, doi:10.1016/0042-6989(71)90227-6.

Northmore DPM, Granda AM (1991) Refractive state, contrast sensitivity, and resolution in the freshwater turtle, Pseudemys scripta elegans, determined by tectal visual-evoked potentials Vis Neurosci 7:619-625

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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