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Table 3 Statistical comparisons of the mean prey size, prey numbers and stomach fullness index ( f ) among age classes

From: Adaptive flexibility in the feeding behaviour of brown trout: optimal prey size

  Mean prey size Prey numbers Stomach fullness index
  Test P value Test P value Test P value
Anllóns H = 3.1 0.373 H = 12.3 0.006 H = 19.7 <0.001
Furelos H = 8.7 0.033 H = 3.6 0.303 H = 46.2 <0.001
Lengüelle H = 4.3 0.226 H = 1.5 0.672 H = 19.5 0.001
Tambre U = 41.0 0.108 U = 69.5 0.897 U = 24.0 0.013
Rois U = 18.0 0.327 U = 25.0 0.650 U = 4.0 0.042
Santa Lucía U = 43.0 0.326 U = 24.5 0.040 U = 52 0.644
Sar U = 12.0 0.016 U = 38.0 0.448 U = 46 0.800
Traba U = 71.0 0.138 U = 63.0 0.067 U = 33.0 0.002
  1. Kruskal-Wallis (H) and Mann-Whitney (U) tests. Data are displayed for each sampling site. Statistically significant results are marked in italics.