A physiological analysis of color vision in batoid elasmobranchs

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• 作者：Christine N. Bedore (1) (6)
  Ellis R. Loew (2)
  Tamara M. Frank (3)
  Robert E. Hueter (4)
  D. Michelle McComb (5)
  Stephen M. Kajiura (1)
  
• 关键词：Elasmobranch ; Batoid ; Color vision ; Sensory ecology ; Ultraviolet vision
• 刊名：Journal of Comparative Physiology A
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：199
• 期：12
• 页码：1129-1141
• 全文大小：
• 作者单位：Christine N. Bedore (1) (6)
  Ellis R. Loew (2)
  Tamara M. Frank (3)
  Robert E. Hueter (4)
  D. Michelle McComb (5)
  Stephen M. Kajiura (1)
  
  1. Department of Biological Sciences, Florida Atlantic University, 777 Glades Road, Boca Raton, FL, 33431, USA
  6. Biology Department, Duke University, Box 90338, Durham, NC, 27708, USA
  2. College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
  3. Oceanographic Center, Nova Southeastern University, Dania Beach, FL, USA
  4. Center for Shark Research, Mote Marine Laboratory, Sarasota, FL, 34236, USA
  5. Ocean Classrooms, Boulder, CO, USA
  
• ISSN：1432-1351

文摘

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 max at 470 and 551nm in cownose rays (Rhinopterabonasus) and 475, 533, and 562nm in yellow stingrays (Urobatisjamaicensis). The same analysis demonstrated that both species had rod max at 500 and 499nm, respectively. The lens and cornea of cownose rays maximally transmitted wavelengths greater than 350nm and greater than 376nm 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.