Table 2. Models of the immune function change.
Generalized linear models exploring the changes from the 3-week to 5-week sampling period in the immune parameters: (A) haemocyte concentration, (B) lytic activity and (C) PO activity in adult crickets maintained in either a 12 h light: 12 h dark (LD) or constant light (LL) regimen. Values highlighted in bold are main effects and interactions that are significant (P < 0.05). Haemocyte concentrations, lytic activity and PO activity were square-root transformed prior to analysis.
| Model parameters | β ± SE | Statistic | P value |
|---|---|---|---|
| (A) Change in haemocyte concentration (cells/ml × 106) | |||
| Whole model | F2,84 = 2.08 | 0.001 | |
| Light regimen | F1,85 = 7.77 | 0.007 | |
| Change in body condition | 77.90 ± 23.85 | F1,85 = 9.09 | 0.003 |
| (B) Change in lytic activity (Δ absorbance) | |||
| Whole model | F1,79 = 0.09 | 0.77 | |
| Light regimen | F1,79 = 0.09 | 0.77 | |
| (C) Change in PO activity (Δ absorbance) | |||
| Whole model | F3,89 = 0.80 | 0.13 | |
| Light regimen | F1,91 = 0.24 | 0.63 | |
| Mating status | F1,91 = 6.56 | 0.002 | |