Table 2.
Results of linear mixed models (LMMs) for the effect of ‘sex’ (male: M; female: F) or CORT ‘treatment’ of the male (control: M-; CORT-supplemented: M+) (fixed factors), ‘body size’ (covariate), ‘enclosure’ (random factor), and the interaction between ‘enclosure’ and ‘sex’ or ‘treatment’ on each of the two response variables that characterize spatial relationships between pairs of B. cinereus amphisbaenians. Significant probabilities are marked in bold
| Separation | Proximity | ||||
|---|---|---|---|---|---|
| df | F | p | F | p | |
| Overall sex differences: | |||||
| Sex (M/M vs. M/F) | 1 | 0.44 | 0.51 | 4.69 | 0.036 |
| Body size | 1 | 0.15 | 0.70 | 0.01 | 0.99 |
| Enclosure | 4 | 60.02 | 0.0001 | 10.66 | 0.001 |
| Enclosure × Sex | 4 | 0.03 | 0.99 | 0.37 | 0.83 |
| Error | 59 | ||||
| Relationships between males: | |||||
| Treatment (M-/M- vs. M-/M+ vs. M+/M+) | 2 | 3.21 | 0.09 | 1.17 | 0.36 |
| Body size | 1 | 1.24 | 0.28 | 1.32 | 0.27 |
| Enclosure | 4 | 2.56 | 0.08 | 1.63 | 0.22 |
| Enclosure × Treatment | 8 | 1.19 | 0.37 | 0.96 | 0.51 |
| Error | 14 | ||||
| Relationships between males and females: | |||||
| Treatment (M-/F vs. M+/F) | 1 | 0.31 | 0.61 | 2.37 | 0.20 |
| Body size | 1 | 0.01 | 0.95 | 0.26 | 0.61 |
| Enclosure | 4 | 5.38 | 0.04 | 3.93 | 0.06 |
| Enclosure × Treatment | 4 | 1.59 | 0.20 | 1.11 | 0.37 |
| Error | 29 | ||||