Table 3
Generalized Linear Models results for the relationship between gonadosomatic index (GSI) and the different sampling periods (1976-84 and 2011-18) and populational variables (length, age and weight) of sexually mature females of Umbrina canosai. Estimates and statistical significance of the fixed factors are shown for each variable. The AIC (Akaike's information criterion) are shown in the last column.
| Model (GSI ∼) | Intercept | Periods | Length | Weight | Age | AIC |
|---|---|---|---|---|---|---|
| Periods | 5.347 (< 0.01) |
-0.027 (0.90) |
2572 | |||
| Periods + Length | -0.322 (0.69) |
-0.386 (0.08) |
0.017 (< 0.01) |
2305 | ||
| Periods +Length + Weight | 8.632 (< 0.01) |
-0.461 (0.03) |
-0.024 (< 0.01) |
0.010 (< 0.01) |
2233 | |
| Periods + Length + Weight + Age | 8.859 (< 0.01) |
-0.312 (0.16) |
-0.026 (< 0.01) |
0.008 (< 0.01) |
0.146 (< 0.01) |
2142 |
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