Table 4.
Stressor scores: for population age, salinity and anthropogenic pressure; global methylation (at population level) and mean individual methylation (SD in parentheses), in the eight analysed mussel populations.
| Species | Population | Stressors | Total stressor score | Methylation status | ||||
|---|---|---|---|---|---|---|---|---|
| Population age | Salinity | Anthropogenic pressure | Summative model | Multiplicative model | Global methylation | Mean individual methylation (SD) | ||
| Mytilus galloprovincialis | Aviles | 1 | 1 | 4 | 6 | 4 | 0.694 | 0.693 (0.091) |
| Havelock | 2 | 1 | 2 | 5 | 4 | 0.659 | 0.674 (0.098) | |
| Nelson | 2 | 1 | 3 | 6 | 6 | 0.692 | 0.646 (0.088) | |
| Vidourle | 1 | 2 | 1 | 4 | 2 | 0.716 | 0.697 (0.117) | |
| Xenostrobus securis | Aviles | 5 | 3 | 4 | 12 | 60 | 0.565 | 0.573 (0.113) |
| Havelock | 1 | 2 | 2 | 5 | 4 | 0.617 | 0.618 (0.075) | |
| Nelson | 1 | 4 | 3 | 8 | 12 | 0.641 | 0.633 (0.058) | |
| Vidourle | 3 | 1 | 1 | 5 | 3 | 0.686 | 0.691 (0.083) | |