Table 1.
Results of logistic and linear mixed models testing the effect of origin (Aulne, Gave, Sélune and a admixed category) and period (1992–2000 and 2001–2009) on age at sea (SSW or MSW individuals) (a) and the effects of the genetic origin, period and age at sea on the weight (b) and body length of fish (c). (Significant p-values are in italic. χ d.f.: degree of freedom of χ2 distribution, L. ratio: likelihood ratio, P: p-value.)
| source of variation | parameters | χ d.f. | L. ratio | P |
|---|---|---|---|---|
| (a) number of winters at sea | ||||
| full model | origin × period | 3 | 3.6056 | 0.3073 |
| origin | 3 | 14.313 | <0.001 | |
| period | 1 | 0.1147 | 0.7349 | |
| (b) LOG weight (mm) | ||||
| full model | origin × age at sea × period | 3 | 1.92 | 0.589 |
| age at sea × period | 1 | 0.58 | 0.446 | |
| origin × age at sea | 3 | 4.02 | 0.259 | |
| origin × period | 3 | 8.24 | 0.041 | |
| period | 1 | 2.27 | 0.132 | |
| origin | 3 | 19.65 | <0.001 | |
| age at sea | 1 | 757.86 | <0.001 | |
| (c) LOG body length (mm) | ||||
| full model | origin × age at sea × period | 3 | 2.39 | 0.495 |
| age at sea × period | 1 | 0.60 | 0.440 | |
| origin × age at sea | 3 | 2.51 | 0.473 | |
| origin × period | 3 | 10.91 | 0.012 | |
| period | 1 | 0.84 | 0.359 | |
| origin | 3 | 20.57 | <0.001 | |
| age at sea | 1 | 800.04 | <0.001 | |