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Table 1 Examining static allometry: MANCOVAs of cranial and humeral shape by size and taxa (Y ~ size*taxa)

From: Getting a head in hard soils: Convergent skull evolution and divergent allometric patterns explain shape variation in a highly diverse genus of pocket gophers (Thomomys)

  Df SS MS R2 F P
Lateral Cranial Shape
 log (size) 1 0.14527 0.145267 0.20361 203.2500 0.001
 taxa 9 0.27228 0.030253 0.38163 42.3282 0.001
 log (size):taxa 9 0.01002 0.001113 0.01405 1.5579 0.001
 residuals 400 0.28589 0.000715    
 total 419 0.71345     
Ventral Cranial Shape
 log (size) 1 0.16758 0.167576 0.20197 222.7192 0.001
 taxa 9 0.32645 0.036273 0.39346 48.2088 0.001
 log (size):taxa 9 0.01063 0.001182 0.01282 1.5703 0.001
 residuals 432 0.32504 0.000752    
 total 451 0.82970     
Anterior Humeral Shape
 log (size) 1 0.004505 0.0045052 0.07927 9.2624 0.001
 taxa 8 0.021335 0.0026669 0.37536 5.4828 0.001
 log (size):taxa 8 0.004246 0.0005307 0.07470 1.0911 0.092
 residuals 55 0.026752 0.0004864    
 total 72 0.056838     
  1. The effect of centroid size (a proxy for body size) on cranial and humeral shapes within the 10 distinct genus Thomomys taxa as evaluated by MANCOVA (details in methods). Degrees of freedom (Df) for each sums of squares (SS) of each term, model residuals, and the total are presented, along with the coefficient of determination (R2), and the F ratio and associated P value. Statistical significance of the models was evaluated by permutation using 1000 iterations. Bold indicates p-values less than 0.05