Table 2. Parameters of the generalized additive model examining the population density of WCM genetic lineages (expressed as number of specimens per shoot) in relation to the host plant species and geographic coordinates (which represent spatial variation).
| Host | Trend surface (spatial pattern) | |||||
|---|---|---|---|---|---|---|
| Lineage | df | Chi-sq. | p | edf | F | p |
| MT-1 | 4 | 34.08 | <0.0001 | 18.1 | 6.16 | <0.0001 |
| MT-2 | 17.3 | 3.70 | <0.0001 | |||
| MT-3 | 6 | 185.6 | <0.0001 | 18.3 | 17.30 | <0.0001 |
| MT-4 | 10.2 | 5.55 | <0.0001 | |||
| MT-5 | 14.4 | 2.42 | 0.0010 | |||
| MT-6 | 12.7 | 3.29 | <0.0001 | |||
| MT-8 | 8 | 123.5 | <0.0001 | 17.4 | 9.75 | <0.0001 |
| MT-9 | 16.5 | 8.97 | <0.0001 | |||
| MT-10 | 11.5 | 2.54 | 0.0027 | |||
| MT-12 | 2 | 7.4 | 0.0006 | 12.6 | 1.52 | 0.0994 |
| MT-13 | 2 | 14.4 | <0.0001 | 17.6 | 2.54 | 0.0002 |
| MT-14 | 6.7 | 1.16 | 0.3240 | |||
| MT-27 | 6.6 | 0.00 | 1.0000 | |||
See Table 1 for explanations.