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Re: Ultraviolet vision

I *really* hate to do this, but I promise it will be my last comment
on the subject on this list.  If you want to know more, please contact
me and/or Jeff behind the scenes.  

Jeff Hecht <jhecht@world.std.com> comments on my previous message:

> I'm not sure how much further into the near ultraviolet reptilian
> eyes can see even with ultraviolet receptors because the lens,
> aqueous humor, and cornea absorb strongly in the near ultraviolet.

And I must say "no no no no no no no!!!!".  Humans are not good models
for other animals with respect to UV perception (and even humans can
see "UV" light if they've had their lenses removed -- Stark and Tan,
1982).  At the end of this message I'll include 1.5 buttloads of
references.  Jeff, I'm surprised that you would respond here without
having at least first looked at the Goldsmith article I cited in
support of the point at issue.

> I'm not an expert on color vision,

This is what I actually do for a living.  En garde!  Nevertheless,
what you wrote after that I won't quibble with.  As you implied,
"color" is best understood as a perceptual term.

Reading list:

Andersson, S. and Amundsen, T. (1997). "Ultraviolet Colour Vision and
     Ornamentation in Bluethroats", _Proc. R. Soc. Lond. B_,
Bennett, A. T. D., Cuthill, I. C., Partridge, J. C. and Lunau, K.
     (1997). "Ultraviolet Plumage Colors Predict Mate Preference in
     Starlings", _Proc. Nat. Acad. Sci. USA_, 94:8618-8621.
Bennett, A. T. D., Cuthill, I. C., Partridge, J. C. and Maier, E. J.
     (1996). "Ultraviolet Vision and Mate Choice in Zebra Finches",
     _Nature_, 380:433-435.
Burkhardt, D. (1989). "UV Vision: A Bird's Eye View of Feathers", _J.
     Comp. Physiol. A_, 164:787-796.
Derem-Oglu, E. N. and Maximov, V. V. (1994). "Small Passerines Can
     Discriminate Ultraviolet Surface Colors", _Vis. Res._,
Douglas, R. H. and Marshall, N. J. (1998).  "A Review of Vertebrate
     and Invertebrate Ocular Filters", In 'The Ecology of Vision'
     (eds. S Archer, S Vallerga, E Loew, M B A Djamgoz & J C
     Partridge), Chapman & Hall.
  (I only have a preprint of that -- I'm not certain that the book is
  out yet, but I think it is...)
Fleishman, L. J., Loew, E. R. and Leal, M. (1993). "Ultraviolet Vision
     in Lizards", _Nature_, 365:397.
Goldsmith, T. H. (1994). "Ultraviolet Receptors and Color Vision:
     Evolutionary Implications and a Dissonance of Paradigms", _Vis.
     Res._, 34(11):1479-1487.
Jacobs, G. H. (1992). "Ultraviolet Vision in Vertebrates", _Amer.
     Zool._, 32:544-554.
Jacobs, G. H. and Deegan, J. F., II (1994). "Sensitivity to Ultraviolet
     Light in the Gerbil (_Meriones unguiculatus_): Characteristics
     and Mechanisms", _Vis. Res._, 34(11):1433-1441.
Jacobs, G. H., Neitz, J. and Deegan, J. F., II (1991). "Retinal
     Receptors in Rodents Maximally Sensitive to Ultraviolet Light",
     _Nature_, 353:655-656.
Johnsen, A., Andersson, S., Ornborg, J. and Lifjeld, J. T., (1998).
     "Ultraviolet Plumage Ornamentation Affects Social Mate Choice and
     Sperm Competition in Bluethroats (Aves: _Luscinia s. svecica_): A
     Field Experiment", _Proc. R. Soc. Lond. B_, 265(1403):1313-131.
Maier, E. J. and Bowmaker, J. K. (1993). "Colour Vision in the
     Passeriform Bird, _Leiothrix lutea_: Correlation of Visual
     Pigment Absorbance and Oil Droplet Transmission with Spectral
     Sensitivity", _J. Comp. Physiol. A_, 172:295-301.
Stark, W. S. and Tan, K. E. W. P. (1982). "Ultraviolet Light:
     Photosensitivity and Other Effects on the Visual System",
     _Photochem. Photobiol._ 36:371-380.
Thorpe, A., Douglas, R. H., and Truscott, R. J. W. (1993). "Spectral
     Transmission and Short-Wave Absorbing Pigments in the Fish Lens
     -- I. Phylogenetic Distribution and Identity", _Vis. Res._,
Tovee, M. J. (1995). "Ultra-Violet Photoreceptors in the Animal
     Kingdom: Their Distribution and Function", _Trends in Ecol. and
     Evol._, 10(11):455-460.
Viitala, Korpimaki, E., Palokangas, P. and Koivula, M. (1995).
     "Attraction of Kestrels to Vole Scent Marks Visible in
     Ultraviolet Light", _Nature_, 373:425-427.

Mickey Rowe     (mrowe@indiana.edu)