Table 3. Average percentage (%) contribution of algal genus to the diet of the sea urchins D. antillarum considering the effect of Sargassum: without Sargassum effect (WSE) and under Sargassum effect (USE) at Mahahual, Xahyayxol and Xcalak produced by the SIAR model using isotope values from algae.
Minimum and maximum values for each algae are shown in parentheses.
| Mahahual | Xahuayxol | Xcalak | ||||||
|---|---|---|---|---|---|---|---|---|
| Genus | WSE | USE | Genus | WSE | USE | Genus | WSE | USE |
| Caulerpa | 19 (1–37) | 14 (0–31) | Caulerpa | 14 (2–25 ) | – | Caulerpa | 14 (0–29) | 22 (0–40) |
| Dictyota | 9 (0–22) | 14 (0–31) | Dictyota | 11 (0–22) | 9 (0–23) | Codium | 15 (0–30) | – |
| Halimeda | 16 (1–29) | 31 (17–44) | Halimeda | 10 (0–19) | 17 (0–35) | Dictyota | 12 (0–26) | 11 (0–26) |
| Laurencia | 12 (0–25) | – | Laurencia | 11 (0–21) | – | Lobophora | 13 (0–27) | – |
| Stypopodium | 12 (0–25) | – | Lobophora | – | 20 (0–38) | Padina | 15 (0–29) | – |
| Turf | 17 (0–34) | 11(0–26) | Penicillus | 8 (0–18) | – | Penicillus | 12 (0–26) | 22 (4–39) |
| Udotea | 15 (0–29) | – | Sargassum | 12 (0–23) | – | Turf | 19 (0–45) | 8 (0–19) |
| S. fluitans | – | 12(0–28) | Stypopodium | 11 (0–21) | – | Sargassum | – | 13 (0–29) |
| S. natans | – | 9(0–23) | Turf | 11 (0–22) | 6 (0–16) | S. fluitans | – | 7 (0–18) |
| Sargassum’s associated turf | – | 9 (0–22) | Udotea | 12 (0–23) | 28 (2–61) | S. natans | – | 8 (0–19) |
| S. fluitans | – | 6 (0–17) | Sargassum’s associated turf | – | 9 (0–23) | |||
| S. natans | – | 6 (0–17) | ||||||
| Sargassum’s associated turf | – | 8 (0–21) | ||||||