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Table 1.

Fixed parameters of the kinematic model

Kinematic parameters for the radula/odontophore       
Odontophore volume     7.5 RSW3  
Radular stalk volume     0.69 RSW3  
Prow volume     0.84% of odontophore volume  
Spline parameters, dorsal (see Fig. 2E)     0.68, 0.78  
Spline parameters, ventral (see Fig. 2B)     0.58, 0.70  
Spline parameters, anterior (see Fig. 2C)     0.69, 0.67  
Spline parameters, posterior (see Fig. 2D)     0.18, 1.0  
Prow parameter s     57.43  
Prow parameter χmax     95.33  
Maximum prow width     0.77 RSW  
Arc angle of ridge     100°  
Radius of ridge arc     1.23 RSW  
Ridge bottom half-width     Odontophore half-width minus 0.46 RSW  
Ratio of ridge width top to bottom     0.4  
Radius of curvature of ridge trapezoid corner     0.2 RSW  
Ridge arc-fitting fraction     0.25  
Angle between line of widest extent and line connecting prow tip and top of radula     44±5° (mean ± S.D., N=15)  
 Ring number      
 
Kinematic parameters for I3 musculature (ring 1 is at the jaws, ring 6 at the lateral groove)       
r 1.248 1.248 1.248 1.3416 1.872 1.7576 
a 0.6864 0.4576 0.208 0.5096 0.9776 0.9256 
q 0.4472 1.768 4.4096 5.044 4.3472 4.9608 
b1 4.2536 3.848 4.212 4.8464 4.3888 4.7528 
b2 5.8344 7.1032 8.1224 7.3008 6.136 6.6248 
Kinematic parameters for the radula/odontophore       
Odontophore volume     7.5 RSW3  
Radular stalk volume     0.69 RSW3  
Prow volume     0.84% of odontophore volume  
Spline parameters, dorsal (see Fig. 2E)     0.68, 0.78  
Spline parameters, ventral (see Fig. 2B)     0.58, 0.70  
Spline parameters, anterior (see Fig. 2C)     0.69, 0.67  
Spline parameters, posterior (see Fig. 2D)     0.18, 1.0  
Prow parameter s     57.43  
Prow parameter χmax     95.33  
Maximum prow width     0.77 RSW  
Arc angle of ridge     100°  
Radius of ridge arc     1.23 RSW  
Ridge bottom half-width     Odontophore half-width minus 0.46 RSW  
Ratio of ridge width top to bottom     0.4  
Radius of curvature of ridge trapezoid corner     0.2 RSW  
Ridge arc-fitting fraction     0.25  
Angle between line of widest extent and line connecting prow tip and top of radula     44±5° (mean ± S.D., N=15)  
 Ring number      
 
Kinematic parameters for I3 musculature (ring 1 is at the jaws, ring 6 at the lateral groove)       
r 1.248 1.248 1.248 1.3416 1.872 1.7576 
a 0.6864 0.4576 0.208 0.5096 0.9776 0.9256 
q 0.4472 1.768 4.4096 5.044 4.3472 4.9608 
b1 4.2536 3.848 4.212 4.8464 4.3888 4.7528 
b2 5.8344 7.1032 8.1224 7.3008 6.136 6.6248 

Spline parameters are y2/y4 and x3/x1(see Fig. 2 legend) and are given as fractions to make them independent of scale.

RSW, radula stalk width; for details of a, b1, b2, q and r, see Fig. 6. Values are in arbitrary model units.

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