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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