Table 4
Mean and confidence interval (α = 0.05) of apparent ingestion rates (AIR) bytesting period: Pp: Palmaria palmata, Ld: Laminaria digitata, Ui: Ulva intestinalis, Cr: Ceramnium rubrum, Pp25−Ld75: a diet composed of 25% P. palmata and 75% L. digitata. Pp75%: diet consisting of 75% of the amount of P. palmata consumed when supplied ad libitum.For each season, diets that do not share a letter significantly differ (ANOVA and SNK tests, p < 0.05).
| Apparent Ingestion Rate (% d−1) | ||||
|---|---|---|---|---|
| E1 (Winter) | E2 (Spring) | E3 (Summer) | E4 (Autumn) | |
| Palmaria palmata | 7.1 ± 0.3a | 12.0 ± 0.2a | 8.3 ± 0.2a,b | 7.3 ± 0.2a |
| Pp75 − Ld25 | 7.5 ± 0.3a | 12.2 ± 0.4a | 8.5 ± 0.4a,b | 8.2 ± 0.6a |
| Pp50 − Ld50 | 7.9 ± 0.4a | 12.4 ± 0.8a | 7.8 ± 0.3b | 7.5 ± 0.3a |
| Pp25 − Ld75 | 8.6 ± 0.3a | 14.3 ± 0.2b | 9.1 ± 0.7a | 8.3 ± 0.4a |
| Laminaria digitata | 9.9 ± 0.9ac | 15.2 ± 0.3c | 7.9 ± 0.5a,b | 9.1 ± 0.3b |
| Ulva intestinalis (frozen) | 22.6 ± 3.8b | 27.2 ± 0.3d | ||
| Ulva intestinalis (fresh) | 16.0 ± 0.2e | 16.5 ± 0.9c | ||
| Pp50 − Ui(frozen50) | 8.8 ± 0.4a | |||
| Ld50 − Ui(frozen50) | 12.3 ± 0.3c | |||
| Pp33 − Ld33 − Ui(frozen33) | 10.0 ± 0.2a | |||
| Chondrus crispus | 8.5 ± 0.4f | |||
| Chondruscrispus(cultivated) | 9.1 ± 0.4f | |||
| Pp50 − Ui(fresh50) | 12.5 ± 0.8d | |||
| Porphyra umbilicalis | 7.9 ± 0.1b | |||
| Ceramium rubrum | 7.7 ± 0.9a | |||
| Ceramium rubrum (cultivated) | 8.8 ± 0.3b | |||
| Pp50 − Cr(cultivated50) | 7.4 ± 0.2a | |||
| Pp50 | 5.1 ± 1e | |||
| Pp75 | 6.0 ± 0.4d | |||
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