Table 1
Parameter estimates of the length–weight relationship for the selected crustacean species in the Gulf of Cadiz: N (sample size), a intercept (CV by bootstrap), b slope (CV by bootstrap) and R coefficient of determination. Lengths are presented for cephalothorax (cm): Lmin minimum observed length, Lmax maximum observed length and mean length (SD), and weights are mean wet weights in g (SD). Depth range (m) is also shown for each species in the study area.
| Species | N | a | b | R | Lmin | Lmax | Mean length | Mean weight | Depth range |
|---|---|---|---|---|---|---|---|---|---|
| Chlorotocus crassicornis | 302 | 0.585 (0.034) | 2.432 (0.035) | 0.945 | 0.7 | 2.2 | 1.5 (0.3) | 1.7 (0.7) | 53–695 |
| Melicertus kerathurus | 430 | 0.814 (0.072) | 2.665 (0.025) | 0.970 | 1.4 | 6.5 | 3.3 (0.6) | 21.7 (10.8) | 19–93 |
| Nephrops norvegicus | 448 | 0.801 (0.153) | 2.967 (0.048) | 0.940 | 1.3 | 6.3 | 3.0 (0.5) | 23.5 (12.8) | 111–695 |
| Parapenaeus longirostris | 2042 | 0.853 (0.025) | 2.562 (0.023) | 0.919 | 1.5 | 4.3 | 2.3 (1.3) | 7.3 (2.1) | 22–828 |
| Pasiphaea sivado | 195 | 0.237 (0.081) | 3.033 (0.061) | 0.980 | 0.8 | 2.3 | 1.4 (0.4) | 0.8 (0.6) | 146–771 |
| Plesionika heterocarpus | 200 | 1.063 (0.019) | 2.525 (0.049) | 0.928 | 0.7 | 1.5 | 1.1 (0.2) | 1.3 (0.5) | 56–695 |
| Plesionika martia | 207 | 1.104 (0.032) | 2.416 (0.066) | 0.905 | 1.6 | 2.4 | 2.0 (0.2) | 6.0 (1.3) | 226–869 |
| Processa canaliculata | 70 | 0.731 (0.065) | 2.382 (0.108) | 0.933 | 1.0 | 1.8 | 1.4 (0.2) | 1.5 (0.5) | 19–771 |
| Solenocera membranacea | 121 | 0.791 (0.048) | 2.448 (0.057) | 0.905 | 0.8 | 2.0 | 1.4 (0.3) | 1.9 (0.8) | 20–869 |
| Squilla mantis | 321 | 1.709 (0.076) | 2.842 (0.052) | 0.902 | 1.5 | 3.6 | 2.9 (11.3) | 35.3 (11.3) | 19–70 |
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