Channel catfish (Ictalurus punctatus)

Containing taxa: Animalia » Chordata » Osteichthyes » Actinopterygii » Neopterygii » Teleostei » Otocephala » Ostariophysi » Siluriformes

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
LWS cone620nm  620nm
Rod543nm  543nm
Rh2 cone535nm  535nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
LWS cone
Rh2 cone
  Photopic
Luminance (scotopic)
Rod   Scotopic
Red-Green
647nm - 587nm - 526nm
 
LWS cone Rh2 cone Photopic

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Notes and References:

Douglas R., Wagner H.J. (1984) Action Spectrum of Photomechanical Cone Contraction in the Catfish Retina. Invest Ophthalmol Vis Sci 25:534-538

Sillman, A.J., Ronan, S.J. & Loew, E.R. Scanning electron microscopy and microspectrophotometry of the photoreceptors of ictalurid catfishes. J. Comp. Physiol. 173, 801–807 (1993). https://doi.org/10.1007/BF02451910

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



Note: Many species may have gaps in available data, which may be filled in with extrapolations from closely related species. The AVIAN website is copyright © 2011-2024 J. Gagnon. All rights reserved unless otherwise specified.