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Table 3 Effect of different lighting and diet treatments on juvenile slug colouration from the time of hatching (start) to the end of the trials

From: Quantifying phenotype-environment matching in the protected Kerry spotted slug (Mollusca: Gastropoda) using digital photography: exposure to UV radiation determines cryptic colour morphs

    Starta Endb   
   Channel Mean SD Mean SD t p
   R 114.80 13.09 55.05 12.48 9.175 <0.001
  UV G 83.26 11.31 36.26 11.65 7.879 <0.001
Lighting   B 60.64 10.44 21.86 9.40 7.455 <0.001
(fed on oats)         
   R 119.18 15.36 114.94 17.23 0.603 0.559
  Darkness G 88.02 12.92 92.97 16.89 −1.179 0.263
   B 65.52 11.08 58.28 13.42 2.172 0.053
   R 124.07 16.35 91.68 13.21 6.27 <0.001
  Carrot G 95.31 11.73 69.51 11.15 5.75 <0.001
   B 71.21 11.09 57.65 6.72 3.06 0.013
Diet   R 119.81 17.11 96.04 11.48 4.378 0.001
(natural photoperiod) Oats G 95.88 18.18 69.65 9.23 4.828 <0.001
   B 67.26 17.26 67.26 5.98 2.227 0.043
  1. aStart = day of hatching, bEnd = day 140 UV-exposure experiments, and day 84 for diet experiments