Barbour's seahorse (Hippocampus barbouri)

Containing taxa: Animalia » Chordata » Osteichthyes » Actinopterygii » Neopterygii » Teleostei » Euteleostei » Neoteleostei » Acanthomorpha » Acanthopterygii » Percomorpha » Scombrimorpharia » Syngnathiformes » Syngnathidae

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
DoubleP560nm  560nm
Twin cone P537nm  537nm
DoubleA537,520nm  528nm
Twin cone A520nm  520nm
Rod500nm  500nm
SWS2a cone460nm  462nm
SWS2b cone430nm  438nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
DoubleP
DoubleA
Twin cone P
Twin cone A
  Photopic
Luminance (scotopic)
Rod   Scotopic
Amber-Teal (double cones)
592nm - 548nm - 503nm
 
DoubleP DoubleA Photopic
Yellow-Cyan (double cones)
576nm - 534nm - 491nm
 
Twin cone P Twin cone A Photopic
Green-Blue
541nm - 491nm - 442nm
 
DoubleP
DoubleA
Twin cone P
Twin cone A
SWS2b cone
SWS2a cone
Photopic
SWS2a cone - SWS2b cone
489nm - 458nm - 427nm
 
SWS2a cone SWS2b cone Photopic

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Notes and References:

Mosk V., Thomas N., Hart N.S., Partridge J.C. (2007) Spectral sensitivities of the seahorses Hippocampus subelongatus and Hippocampus barbouri and the pipefish Stigmatopora argus. Visual Neuroscience 24(3):345-354 May 2007

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.