Electrophysiological measurements of spectral mechanisms in the retinas of two cervids: white-tailed deer (Odocoileus virginianus) and fallow deer (Dama dama) |
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| Authors: | G H Jacobs J F Deegan II J Neitz B P Murphy K V Miller R L Marchinton |
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| Institution: | (1) Department of Psychology, University of California, 93106 Santa Barbara, CA, USA;(2) Department of Cell Biology and Anatomy, Medical College of Wisconsin, 52226 Milwaukee, WI, USA;(3) D. B. Warnell School of Forest Resources, University of Georgia, 30602 Athens, GA, USA |
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| Abstract: | Electroretinogram (ERG) flicker photometry was used to study the spectral mechanisms in the retinas of white-tailed deer (Odocoileus virginianus) and fallow deer (Dama dama). In addition to having a rod pigment with maximum sensitivity ( max) of about 497 nm, both species appear to have two classes of photopic receptors. They share in common a short-wavelength-sensitive cone mechanism having max in the region of 450–460 nm. Each also has a cone having peak sensitivity in the middle wavelengths, but these differ slightly for the two species. In white-tailed deer the max of this cone is about 537 nm; for the fallow deer the average max value for this mechanism was 542 nm. Deer resemble other ungulates and many other types of mammal in having two classes of cone pigment and, thus, the requisite retinal basis for dichromatic color vision.Abbreviations ERG
electroretinogram
- LWS
long wavelength sensitive
- MWS
middle wavelength sensitive
- SWS
short wavelength sensitive |
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| Keywords: | Cone photopigments Ungulate Deer Electroretinogram Dichromacy Odocoileus virginianus Dama dama |
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