Table 2 Correlations among components of the HPA axis within each population at each life history substage. Data are R2, p-value. Bold indicates significant correlations.
From: Environmental unpredictability shapes glucocorticoid regulation across populations of tree swallows
Mid incubation | Nestling provisioning | |||||
|---|---|---|---|---|---|---|
Stress-induced (R2, p-value) | Post-dex (R2, p-value) | Negative feedback (R2, p-value) | Stress-induced (R2, p-value) | Post-dex (R2, p-value) | Negative feedback (R2, p-value) | |
Tennessee | ||||||
Baseline | 0.001, 0.94 | 0.005, 0.54 | 0.09, 0.03 | 0.18, 0.002 | ||
Stress-induced | 0.08, 0.02 | 0.84, < 0.0001 | 0.27, 0.0001 | 0.69, < 0.0001 | ||
Post-dex | 0.01, 0.33 | 0.02, 0.37 | ||||
Stress response | 0.99, < 0.0001 | 0.84, < 0.0001 | 0.99, < 0.0001 | 0.70, < 0.0001 | ||
New York | ||||||
Baseline | 0.02, 0.43 | 0.02, 0.41 | 0.001, 0.89 | 0.03, 0.43 | ||
Stress-induced | 0.15, 0.01 | 0.96, < 0.0001 | 0.01, 0.62 | 0.57, < 0.0001 | ||
Post-dex | 0.17, 0.01 | 0.52, 0.0001 | ||||
Stress response | 0.99, < 0.0001 | 0.96, < 0.0001 | 0.81, < 0.0001 | 0.50, 0.0008 | ||
Wyoming | ||||||
Baseline | 0.07, 0.02 | 0.005, 0.55 | 0.11, 0.07 | 0.01, 0.60 | ||
Stress-induced | 0.001, 0.91 | 0.92, < 0.0001 | 0.08, 0.12 | 0.92, < 0.0001 | ||
Post-dex | 0.001, 0.48 | 0.0002, 0.95 | ||||
Stress response | 0.99, < 0.0001 | 0.91, < 0.0001 | 0.99, < 0.0001 | 0.92, < 0.0001 | ||
Alaska | ||||||
Baseline | 0.001, 0.78 | 0.003, 0.66 | 0.01, 0.43 | 0.007, 0.54 | ||
Stress-induced | 0.03, 0.15 | 0.71, < 0.0001 | 0.25, 0.0001 | 0.91, < 0.0001 | ||
Post-dex | 0.005, 0.59 | 0.06, 0.10 | ||||
Stress response | 0.88, < 0.0001 | 0.69, < 0.0001 | 0.9, < 0.0001 | 0.90, < 0.0001 | ||
