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Article
A Physiological Analysis of Color Vision in Batoid Elasmobranchs
Journal of Comparative Physiology A
  • Christine N. Bedore, Florida Atlantic University
  • Ellis R. Loew, Cornell University
  • Tamara M. Frank, Nova Southeastern University
  • Robert E. Hueter, Mote Marine Laboratory
  • D. Michelle McComb, Ocean Classrooms
  • Stephen M. Kajiura, Florida Atlantic University
Document Type
Article
Publication Date
12-1-2013
Keywords
  • Elasmobranch,
  • Batoid,
  • Color vision,
  • Sensory ecology,
  • Ultraviolet vision
Abstract
The potential for color vision in elasmobranchs has been studied in detail; however, a high degree of variation exists among the group. Evidence for ultraviolet (UV) vision is lacking, despite the presence of UV vision in every other vertebrate class. An integrative physiological approach was used to investigate color and ultraviolet vision in cownose rays and yellow stingrays, two batoids that inhabit different spectral environments. Both species had peaks in UV, short, medium, and long wavelength spectral regions in dark-, light-, and chromatic-adapted electroretinograms. Although no UV cones were found with microspectrophotometric analysis, both rays had multiple cone visual pigments with λmax at 470 and 551 nm in cownose rays (Rhinoptera bonasus) and 475, 533, and 562 nm in yellow stingrays (Urobatis jamaicensis). The same analysis demonstrated that both species had rod λmax at 500 and 499 nm, respectively. The lens and cornea of cownose rays maximally transmitted wavelengths greater than 350 nm and greater than 376 nm in yellow stingrays. These results support the potential for color vision in these species and future investigations should reveal the extent to which color discrimination is significant in a behavioral context.
Comments

©Springer-Verlag Berlin Heidelberg 2013

DOI
10.1007/s00359-013-0855-1
Citation Information
Christine N. Bedore, Ellis R. Loew, Tamara M. Frank, Robert E. Hueter, et al.. "A Physiological Analysis of Color Vision in Batoid Elasmobranchs" Journal of Comparative Physiology A Vol. 199 Iss. 12 (2013) p. 1129 - 1141 ISSN: 0340-7594
Available at: http://works.bepress.com/tamara-frank/6/