Table 2 Univariate linear mixed models (LMMs) assessing the factors determining the variation of components of salamander’s dorsal pattern (hue, saturation, value and percentage of yellow) in adult, wild caught individuals.
From: Factors determining the dorsal coloration pattern of aposematic salamanders
Dependent variables | Independent variables | Effect | NumDF | DenDF | F | P |
|---|---|---|---|---|---|---|
Percentage of yellow | Prey availability | + | 1 | 18.08 | 1.05 | 0.319 |
Sex (male) | + | 1 | 454.78 | 0.45 | 0.50 | |
TL | − | 1 | 455.22 | 22.29 | < 0.001 | |
NDVI | − | 1 | 15.71 | 0.51 | 0.485 | |
Altitude | + | 1 | 16.45 | 0.07 | 0.782 | |
Predator richness | + | 1 | 15.06 | 0.11 | 0.741 | |
Hue | Prey availability | − | 1 | 33.69 | 0.9 | 0.347 |
Sex (male) | + | 1 | 442.20 | 0.1 | 0.745 | |
TL | + | 1 | 443.83 | 0.18 | 0.669 | |
NDVI | − | 1 | 17.87 | 7.30 | 0.014 | |
Altitude | − | 1 | 19.38 | 3.01 | 0.098 | |
Predator richness | + | 1 | 17.78 | 5.67 | 0.028 | |
Saturation | Prey availability | + | 1 | 23.90 | 5.78 | 0.024 |
Sex (male) | + | 1 | 451 | 2.4 | 0.121 | |
TL | + | 1 | 454.44 | 0.002 | 0.962 | |
NDVI | + | 1 | 19.06 | 0.002 | 0.962 | |
Altitude | − | 1 | 20.04 | 0.02 | 0.877 | |
Predators | − | 1 | 18.59 | 3.54 | 0.075 | |
Value | Prey availability | + | 1 | 27.67 | 3.19 | 0.084 |
Sex (male) | − | 1 | 445.32 | 0.32 | 0.566 | |
TL | + | 1 | 447.96 | 0.01 | 0.908 | |
NDVI | + | 1 | 18.31 | 0.8 | 0.38 | |
Altitude | − | 1 | 19.53 | 0.007 | 0.93 | |
Predator richness | − | 1 | 18.10 | 0.01 | 0.906 |
