Table 1.
Linear mixed‐effects analyses (LMER) testing the developmental colour and pattern change of crabs as obtained from normalized camera responses
| Subject | Estimate | SE | df | t‐Value | p |
|---|---|---|---|---|---|
| Crab colour (PCcolour) | |||||
| (Intercept)a | 0.09 | 0.21 | 1.8 | 0.43 | 0.708 |
| Shade [pale] | 0.87 | 0.20 | 38.3 | 4.17 | <0.001 |
| Time [week] | −0.10 | 0.01 | 437.9 | −8.83 | <0.001 |
| Crab pattern (PCpattern) | |||||
| (Intercept)a | −0.09 | 0.29 | 2.2 | −0.32 | 0.776 |
| Background [rock pool] | 0.67 | 0.24 | 65.0 | 2.75 | 0.007 |
| Shade [pale] | 0.81 | 0.24 | 64.9 | 3.29 | 0.001 |
| Time [week] | −0.06 | 0.02 | 345.1 | −3.15 | 0.001 |
| Background × Week | −0.04 | 0.02 | 346.9 | −1.77 | 0.076 |
| Shade × Week | −0.10 | 0.02 | 346.5 | −3.99 | <0.001 |
LMER predicts the colour and pattern responses in relation to crab original appearance (“shade”), rearing background type (“background”), time (“week”) and their interactions. Intercept includes rearing tank and crab ID as random variables.
a
Intercept includes factor level: Background [mud] and Shade [dark].