Figure 1
Figure 2
Figure 3
Figure 4
Seasonal diet composition of Dentex maroccanus (N% – percentage numerical composition, F% – frequency of occurrence, W% – percentage gravimetric composition and IRI% – percentage index of relative importance)_
| Winter | Autumn | Spring | Summer | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prey groups | N% | F% | W% | IRI% | N% | F% | W% | IRI% | N% | F% | W% | IRI% | N% | F% | W% | IRI% |
| Crustacea | ||||||||||||||||
| Amphipoda | 19.30 | 29.33 | 0.14 | 7.63 | 16.67 | 40.00 | 0.45 | 8.86 | 8.33 | 8.70 | 0.89 | 0.92 | 5.88 | 10.00 | 0.27 | 0.84 |
| Brachyura | 5.61 | 21.33 | 22.29 | 7.96 | 8.89 | 40.00 | 17.08 | 13.44 | 6.25 | 8.70 | 23.46 | 2.96 | - | - | - | - |
| Decapod crustaceans | 28.77 | 81.33 | 31.91 | 66.00 | 27.78 | 86.67 | 14.91 | 47.86 | 47.92 | 82.61 | 46.72 | 89.65 | 47.06 | 80.00 | 6.47 | 58.38 |
| Isopoda | 7.72 | 20.00 | 1.30 | 2.41 | 11.11 | 33.33 | 0.91 | 5.18 | 2.08 | 4.35 | 3.55 | 0.28 | - | - | - | - |
| Mysidacea | 21.40 | 42.67 | 2.24 | 13.49 | 22.22 | 53.33 | 1.13 | 16.11 | 10.42 | 13.04 | 1.63 | 1.80 | 29.41 | 30.00 | 1.20 | 12.52 |
| Ostrocoda | 1.40 | 5.33 | 0.32 | 0.12 | 1.11 | 13.33 | 12.23 | 2.30 | 2.08 | 4.35 | 0.36 | 0.12 | - | - | - | - |
| Copepoda | ||||||||||||||||
| Candacia longimana | 0.35 | 1.33 | 0.08 | 0.01 | 1.11 | 6.67 | 0.12 | 0.11 | - | - | - | - | - | - | - | - |
| Euchaeta marina | 0.35 | 1.33 | 0.52 | 0.02 | - | - | - | - | - | - | - | - | - | - | - | - |
| Aetideus armatus | 0.70 | 2.67 | 0.61 | 0.05 | - | - | - | - | - | - | - | - | - | - | - | - |
| Corycaeus spp. | 0.35 | 1.33 | 20.80 | 0.38 | 1.11 | 6.67 | 31.88 | 2.84 | - | - | - | - | - | - | - | - |
| Calanoida | 2.46 | 8.00 | 0.66 | 0.33 | 2.22 | 13.33 | 0.29 | 0.43 | 2.08 | 4.35 | 0.64 | 0.14 | - | - | - | - |
| Parazitic copepoda | 0.35 | 1.33 | 0.39 | 0.01 | - | - | - | - | - | - | - | - | - | - | - | - |
| Harpacticoida | 1.75 | 6.67 | 0.20 | 0.17 | - | - | - | - | - | - | - | - | - | - | - | - |
| Mollusca | ||||||||||||||||
| Pteropoda | 6.32 | 1.33 | 0.30 | 0.12 | 3.33 | 6.67 | 0.91 | 0.37 | - | - | - | - | - | - | - | - |
| Gastropoda | - | - | - | - | - | - | - | - | 14.58 | 8.70 | 14.84 | 2.93 | 5.88 | 10.00 | 6.17 | 1.64 |
| Bivalvia | 2.11 | 8.00 | 0.77 | 0.31 | 2.22 | 13.33 | 2.26 | 0.77 | 2.08 | 4.35 | 2.35 | 0.22 | - | - | - | - |
| Teleostei | 1.05 | 4.00 | 17.44 | 0.99 | 2.22 | 6.67 | 17.83 | 1.73 | 4.17 | 8.70 | 5.56 | 0.97 | 11.76 | 20.00 | 85.88 | 26.62 |