West Indian manatee (Trichechus manatus)

Containing taxa: Animalia » Chordata » Osteichthyes » Sarcopterygii » Tetrapoda » Mammalia » Eutheria » Afrotheria » Sirenia

Photoreceptors:
Receptor Opsin λmax Filter λmax Filter λ50% Recep. λmax
Yellow cone555nm  555nm
Rod500nm  500nm
Blue cone410nm  426nm


Opponent processes:
Description (+) Terminus (-) Terminus Mode
Luminance (photopic)
Yellow cone   Photopic
Luminance (scotopic)
Rod   Scotopic
Green-Indigo
556nm - 483nm - 425nm
 
Yellow cone Blue cone
(Rod)
Photopic
Cones-Rods
591nm - 537nm - 478nm
 
Yellow cone Rod Mesopic

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Notes and References:

Newman, L. A. & Robinson, P. R. (2006) The visual pigments of the West Indian manatee (Trichechus manatus). Vision Research, 46 3326-30. DOI:10.1016/j.visres.2006.03.010

Griebel, U. & Schmid, A (1996) Color Vision in the Manatee (Trichechus manatus) Vision Research, 36(17), 2747-2757. ISSN 0042-6989. doi;10.1016/0042-6989(95)00323-1

Bauer GB, Colbert DE, Gaspard JC, Littlefield B (2003) Underwater Visual Acuity of Florida Manatees (Trichechus manatus latirostris). International Journal of Comparative Physiology 16(2): 130-142

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.