Table 1

Summary of mixed models analysis for the four models (M I–M IV). Num DF – numerator DF, Den DF – denumerator DF.

Effect Num DF Den DF F P-value
M I (fish length) 1 14 0.02 0.8787
M II (fish weight) 1 114 0.00 0.9808
M III (number of prey categories)        
locality (fish species ⁎ type of prey) 4 8 871 4.87 0.0001
M IV (prey selectivity)        
locality (aquatic prey taxon ⁎ fish species) 53 2 739 48.35 0.0001

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