Table 1.
Fitness comparisons of hosts and symbionts by treatmenta.
| fitness measure | units | treatment | values (±1 s.e.) | N | p |
|---|---|---|---|---|---|
| polyp growth rate | mg d−1 | H | 0.041 (0.037, 0.046) | 52 | <0.001 |
| V | 0.090 (0.085, 0.094) | ||||
| polyp budding rate | buds d−1 | H | 1.440 (1.343, 1.541) | 52 | <0.05 |
| V | 2.235 (2.079, 2.398) | ||||
| algal MI | percentage of cells dividing | H | 1.61 (1.48, 1.73) | 51 | 0.003 |
| V | 1.05 (0.94, 1.18) | ||||
| algal expulsion | cells h−1 | H | 996.7 (770.3, 1290) | 52 | <0.05 |
| V | 353.0 (265.4, 469.3) |
a
Replicate means of horizontal (H) and vertical (V) treatments are shown. All treatment effects were significant and analysed using nested ANOVAs, except algal expulsion rate which was analysed with a nested ANCOVA using host biomass as a covariate. MI is mitotic index.