Table 2. AICc (Akaike information criterion adjusted for sample size) scores of all candidate generalized additive models (GAMs).
| Candidate models | Dependent variable | ||
|---|---|---|---|
| Abundance of infected | Infection prevalence | Seroconversion rate | |
| Within-cycle dynamics | |||
| cycle ID + s(cycle month by cycle ID) | 626.4 | 543.3 | 169.1 |
| cycle ID + s(cycle month) | 646.9 | 533.2 | 186.0 |
| s(cycle month) | 762.9 | 530.1 | 184.3 |
| cycle ID | 643.9 | 953.7 | 193.9 |
| intercept only | 761.0 | 951.2 | 196.5 |
| Within-year dynamics | |||
| cycle phase + s(month by cycle phase) | 578.1 | 507.4 | 134.6 |
| cycle phase + s(month) | 600.1 | 490.5 | 134.1 |
| s(month) | 610.3 | 497.2 | 136.5 |
| cycle phase | 1374.8 | 549.0 | 132.1 |
| intercept only | 1381.2 | 550.9 | 135.5 |
| Variation in relation to breeding season (dichotomous) | |||
| cycle phase * breeding season | 130.4 | ||
| cycle phase + breeding season | 127.9 | ||
| breeding season | 130.4 | ||
| cycle phase | 130.8 | ||
| intercept only | 134.1 | ||
| Variation in relation to cohort age and birth year cycle phase | |||
| cycle phase + s(cohort age by cycle phase) | 183.3 | 156.1 | |
| cycle phase + s(cohort age) | 182.2 | 158.3 | |
| s(cohort age) | 205.3 | 160.9 | |
| cycle phase | 519.4 | 158.7 | |
| intercept only | 642.2 | 161.9 | |
s(…) denote GAM smooth terms.
The AICc scores of the best-supported models are written in bold.