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Table 1 A repeated-measures ANOVA for effect of diet and larvae age (days after hatching) on larvae body weight

From: Effects of dietary sodium on performance, flight and compensation strategies in the cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Source df MS F P
Diet 2 21818.20 8.61 0.0003
Error a 188 2535.45   
Larvae age 1.85 2957949.84 1167.02 <0.0001
Larvae age × Diet 3.71 12545.52 4.95 0.0010
Error b 348.40 2534.63   
  1. Above statistical computations were performed by the program SPSS 16.0 for Windows (SPSS for Windows xp; SPSS, Inc., Chicago, IL). H. armigera larvae were fed on diet A, B and C. Diet A was a conventional diet. Diet B was modified from the conventional diet in which half amounts of NaCl and NaF in Wesson salt mixture were replaced with equal mole of KCl and KF, respectively. Diet C was modified from the conventional diet in which all NaCl and NaF in Wesson salt mixture were replaced with equal mole of KCl and KF.