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Table 7 Results of two-sided ANOVA analyses with locality and waterbody type as fixed factors and the three first PCs as dependent variables

From: A comparative study of shell variation in two morphotypes of Lymnaea stagnalis (Mollusca: Gastropoda: Pulmonata)

Variables df MS F pvalue
L. stagnalis s. str
 PC1     
  Locality 11 32.235 27.052 0.000
  Type of waterbody 2 42.950 36.044 0.000
  Locality × waterbody type 22 22.101 24.421 0.000
 PC2     
  Locality 11 6.501 16.700 0.000
  Type of waterbody 2 7.476 19.202 0.000
  Locality × waterbody type 22 5.366 13.781 0.000
 PC3     
  Locality 11 0.586 5.786 0.000
  Type of waterbody 2 0.560 5.529 0.004
  Locality × waterbody type 22 0.593 5.583 0.000
L. fragilis
 PC1     
  Locality 11 21.27 46.200 0.000
  Type of waterbody 2 44.3 96.265 0.000
  Locality × waterbody type 22 20.4 44.325 0.000
 PC2     
  Locality 11 3.912 23.423 0.000
  Type of waterbody 2 1.417 8.487 0.000
  Locality × waterbody type 22 4.248 25.436 0.000
 PC3     
  Locality 11 0.509 5.534 0.000
  Type of waterbody 2 0.259 2.281 0.06
  Locality × waterbody type 22 0.500 5.446 0.000