Skip to Main Content
Table 1.

Spectral characteristics of rod and cone visual pigments in the retina of two species of shovelnose ray measured using microspectrophotometry

Giant shovelnose ray Rhinobatos typus
Eastern shovelnose ray Aptychotrema rostrata
RodSWS coneMWS coneLWS coneRodSWS coneMWS coneLWS cone
Mean prebleach λmax (nm) 504.2±1.9 476.6±4.2 502.0±2.8 561.1±4.8 498.1±1.9 458.7±3.1 491.8±3.3 553.2±4.4 
λmax of mean prebleach spectrum (nm) 504.1 476.5 502.8 563.2 498.2 458.2 493.5 553.0 
Mean difference spectrum λmax (nm) 506.0±3.2 476.4±3.4 501.5±7.3 559.4±7.8 501.1±2.3 457.7±6.4 490.0±6.0 554.8±6.5 
λmax of mean difference spectrum (nm) 505.4 476.7 504.3 561.3 501.3 457.2 493.4 553.5 
Mean transverse absorbance (decadic) at λmax of difference spectrum 0.028±0.006 0.020±0.005 0.013±0.003 0.016±0.008 0.035±0.007 0.013±0.004 0.011±0.003 0.013±0.005 
Number of cells averaged 14 10 10 15 10 11 
Giant shovelnose ray Rhinobatos typus
Eastern shovelnose ray Aptychotrema rostrata
RodSWS coneMWS coneLWS coneRodSWS coneMWS coneLWS cone
Mean prebleach λmax (nm) 504.2±1.9 476.6±4.2 502.0±2.8 561.1±4.8 498.1±1.9 458.7±3.1 491.8±3.3 553.2±4.4 
λmax of mean prebleach spectrum (nm) 504.1 476.5 502.8 563.2 498.2 458.2 493.5 553.0 
Mean difference spectrum λmax (nm) 506.0±3.2 476.4±3.4 501.5±7.3 559.4±7.8 501.1±2.3 457.7±6.4 490.0±6.0 554.8±6.5 
λmax of mean difference spectrum (nm) 505.4 476.7 504.3 561.3 501.3 457.2 493.4 553.5 
Mean transverse absorbance (decadic) at λmax of difference spectrum 0.028±0.006 0.020±0.005 0.013±0.003 0.016±0.008 0.035±0.007 0.013±0.004 0.011±0.003 0.013±0.005 
Number of cells averaged 14 10 10 15 10 11 

Values are ±1 standard deviation. λmax, wavelength of maximum absorbance.

Close Modal

or Create an Account

Close Modal
Close Modal