Table 2 Results from t tests comparing mean RGB values of slugs against RGB values of substrate from their natural habitat, and against substrate from alternative habitats (sample sizes and means ± SD for each colour channel are presented in Table 1)
Forested substrate | Bog substrate | ||||||
|---|---|---|---|---|---|---|---|
Channel | Mean diff. | t | p | Mean diff. | t | p | |
Forested slug | R | 0.56 | 0.18 | 0.852 | −57.60 | −19.80 | <0.001 |
G | 4.30 | 1.58 | 0.115 | −46.68 | −16.64 | <0.001 | |
B | 2.05 | 0.78 | 0.437 | −38.22 | −12.46 | <0.001 | |
Bog slug | R | 58.51 | 21.28 | <0.001 | 0.35 | 0.13 | 0.894 |
G | 47.69 | 18.03 | <0.001 | −3.29 | −1.22 | 0.224 | |
B | 36.15 | 11.91 | <0.001 | −4.13 | −1.21 | 0.227 | |