Table 4
Logistic model parameters (β1 and β0 ), the calculated length and age at first maturity (L50 mm; A50 yr) and the length and age at which 95% of the specimens were mature (L95 mm; A95 yr) for Umbrina canosai landed in Rio Grande in two time periods: 1976-1984 and 2011-2018. All parameters and indices are presented as the mean of their posterior distributions and the 2.5 % (Cr I 2.5%) and 97.5% (Cr I 97.5%) credibility intervals.
| Females | Males | ||||||
|---|---|---|---|---|---|---|---|
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| Period | Parameters | Mean | Cr I 2.5% | Cr I 97.5% | Mean | Cr I 2.5% | Cr I 97.5% |
| 1976-1984 | β1 | 0.28 | 0.25 | 0.32 | 0.33 | 0.29 | 0.37 |
| β0 | -6.3 | -7.3 | -5.4 | -7.9 | -8.8 | -7.1 | |
| L50 | 225.1 | 216.6 | 232.5 | 241.5 | 237.4 | 245.4 | |
| L95 | 330.5 | 323.1 | 338.4 | 330.7 | 323.7 | 337.7 | |
| 2011-2018 | β1 | 0.27 | 0.21 | 0.33 | 0.69 | 0.55 | 0.85 |
| β0 | -5.4 | -6.9 | -4 | -15.2 | -18.7 | -12.1 | |
| L50 | 203.5 | 192.9 | 212.9 | 219.4 | 215.4 | 222.8 | |
| L95 | 315.7 | 301.9 | 331.4 | 262.2 | 255.3 | 270.1 | |
| 1976-1984 | β1 | 0.68 | 0.59 | 0.76 | 0.51 | 0.43 | 0.60 |
| β0 | -1.6 | -1.9 | -1.3 | -1.2 | -1.6 | -0.9 | |
| A50 | 2.43 | 2.17 | 2.67 | 2.4 | 2.1 | 2.8 | |
| A95 | 6.8 | 6.4 | 7.2 | 8.2 | 7.6 | 9.0 | |
| 2011-2018 | β1 | 1.26 | 0.93 | 1.64 | 3.06 | 2.33 | 4.13 |
| β0 | -2.1 | -3.0 | -1.3 | -5.8 | -8 | -4.2 | |
| A50 | 1.67 | 1.4 | 2.0 | 1.9 | 1.8 | 2.0 | |
| A95 | 4.1 | 3.6 | 4.6 | 2.9 | 2.7 | 3.1 | |
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