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Table 3 Analysis of covariance (ANCOVA, type I) describing how the breaking point [N] varies across the four taxa and with body weight (df = degrees of freedom, SS = sum of squares, F-value and p-value shown; significant effects where p < 0.05). Body weight used with power-term b to account for non-linear relationship with N. The interaction term (Taxon × Body weight b) describes whether the breaking point increases with body weight at a similar slope across taxa

From: Under pressure: force resistance measurements in box mites (Actinotrichida, Oribatida)

Predictors (Force)

df

SS

F

p

Taxon

3

11.3

503.3

<  2 * 10 −16

Body weightb [μg]

1

7.2

959.4

<  2 * 10 −16

Taxon × Body weightb

3

0.03

1.1

0.349

Residuals

143

1.1

  
  1. b = 0.7809425
  2. Numbers in bold indicate significant result