Table 2.
Predictors of within-host gut microbiome richness for Verreaux's sifaka inhabiting Kirindy Mitea National Park. Average coefficient estimates, standard errors, z values, and Pr(>|z|) values are shown for fixed-effect parameters. Baseline age (adult) is not shown. Group membership was included as a random effect in all models. Bolded relationships are significant at p < 0.05.
| model | parameter | estimate | s.e. | z-value | Pr(>|z|) | interpretation |
|---|---|---|---|---|---|---|
| sociability/age Nsifaka = 27 |
intercept | 8.0 | 0.01 | 638.1 | <2×10−16 | |
| weighted degree centrality | 7.65 | 1.04 | 7.4 | 1.92×10−13 | more central individuals have greater microbial diversity | |
| age (juvenile) | −0.11 | 0.01 | −12.9 | <2×10−16 | juveniles have lower microbial diversity than adults | |
| age (subadult) | −0.04 | 0.01 | −3.8 | 0.0001 | subadults have lower microbial diversity than adults | |
| scent-marking Nsifaka = 19 |
intercept | 7.94 | 0.01 | 558.9 | <2×10−16 | |
| scent-marking rate | 0.05 | 0.005 | 9.8 | <2×10−16 | individuals that scent-mark more frequently have greater microbial diversity | |
| diet composition Nsifaka = 16 |
intercept | 7.46 | 0.07 | 108.3 | <2×10−16 | |
| plant part evenness | 0.21 | 0.04 | 5.1 | 3.84×10−7 | individuals that eat a greater variety of plant parts have greater microbial diversity | |
| plant species evenness | 0.09 | 0.03 | 3.0 | 0.003 | individuals that eat a greater variety of plant species have greater microbial diversity |