Table 2.
Species identified on the three types of panels: O, untreated; A, treated with copper and zinc antifouling paint; B, treated with silicone and hydrogel antifouling paint. Average ± SD of the number of specimens found on each panel
| Species | Type O (n = 60) |
Type A (n = 60) |
Type B (n = 60) |
|---|---|---|---|
| Ulva rigida* | 19.3 ± 1.6 | 6.5 ± 2.0 | 12.5 ± 2.3 |
| Ectocarpus siliculosus* | 18.5 ± 2.3 | 9.2 ± 2.20 | 15.7 ± 1.7 |
| Haliclona mediterranea* | 11.5 ± 1.8 | 1.6 ± 0.76 | 5.23 ± 2.41 |
| Sycon ciliatum | 27.3 ± 1.7 | 2.0 ± 1.03 | 12.4 ± 3.1 |
| Sabella spallanzanii | 17.5 ± 3.6 | n.d | 12.4 ± 2.9 |
| Hydroides elegans | 73.3 ± 5.6 | 18.2 ± 2.4 | 49.0 ± 4.2 |
| Bugula neritina | 42.5 ± 3.5 | 11.6 ± 2.5 | 31.5 ± 2.2 |
| Schizoporella errata* | 9.6 ± 1.7 | 2.3 ± 0.77 | 7.5 ± 2.07 |
| Crisia ramosa | 31.2 ± 3.3 | 7.0 ± 1.87 | 19.3 ± 3.1 |
| Tubularia crocea* | 13.3 ± 3.7 | 7.8 ± 2.15 | 11.0 ± 2.0 |
| Ciona intestinalis | 14.6 ± 2.6 | n.d | 2.5 ± 1.03 |
| Botryllus schlosseri* | 12.7 ± 2.5 | 4.3 ± 1.34 | 10.5 ± 1.8 |
| Ascidiella aspersa | 26.5 ± 2.9 | 8.2 ± 1.95 | 19. 8 ± 1.1 |
| Didemnum fulgens* | 16.7 ± 3.7 | n.d | 2.2 ± 1.15 |
| Mytilus galloprovincialis | 231.0 ± 17.9** | 167.2 ± 17.6** | 202.2 ± 12.7** |
| Balanus perforatus | 69.6 ± 5.3 | 26.2 ± 2.8 | 54.3 ± 4.8 |
| Balanus amphitrite | 54.6 ± 4.8 | 22.7 ± 2.6 | 49.2 ± 3.4 |
| Megatrema anglicum | 44.4 ± 4.4 | 15.2 ± 2.3 | 26.9 ± 2.5 |
| Chtamalus depressus | 12.7 ± 2.5 | 6.3 ± 2.21 | 9.5 ± 2.25 |
| Megabalanus tintinnabulum | 2.5 ± 1.04 | n.d | n.d |
Abbreviation: n.d.: not detected. *: species found in colonies
P < 0.05 **: Mytilus galloprovincialis vs. all species detected