Table 1. Diet composition of D. sargus.
| AC=53.4 | AC=73.4 | AC=82.4 | ||||
| PC | TG | BR | ||||
| Prey items | IRI% | O% | IRI% | O% | IRI% | O% |
| C. racemosa | 0.0 | 0.0 | 64.5 | 72.7 | 51.3 | 85.7 |
| Articulated corallines | 23.3 | 50.0 | 2.5 | 45.5 | 0.15 | 14.3 |
| Bivalves | 0.0 | 0.0 | 1.5 | 27.3 | 1.4 | 28.6 |
| Chitonids | 0.0 | 0.0 | 1.4 | 18.2 | 0.1 | 7.1 |
| Gastropods | 1.6 | 25.0 | 5.0 | 36.4 | 0.8 | 35.7 |
| Sponges | 3.2 | 12.5 | 12.3 | 27.3 | 1.9 | 21.4 |
| Bryozoans | 11.0 | 37.5 | 0.0 | 0.0 | 0.6 | 43.0 |
| Polychaetes | 49.7 | 37.5 | 0.1 | 9.1 | 7.2 | 21.4 |
| Decapods | 3.5 | 12.5 | 0.7 | 36.4 | 1.6 | 28.6 |
| Ascidians | 1.8 | 25.0 | 0.0 | 0.0 | 7.6 | 43.0 |
| Amphipods | 0.1 | 12.5 | 0.0 | 0.0 | 0.0 | 7.1 |
| Unidentified | 2.1 | 12.5 | 1.3 | 3.0 | 0.0 | 7.1 |
For each of the three study sites diet was expressed as percentage of frequency of occurrence (O%) and index of relative importance (IRI%). AC: % stomachs containing food.