Table 4.
Results of PERMANOVA pairwise analysis carried out to ascertains the differences in gut contents of H. guttulatus among three habitats (Corallina elongata, sandy bottom and Cladophora prolifera) in terms of total abundance of prey items, preys < 1mm, preys > 1mm, number of higher taxa and community composition of prey items (P(perm) = probability level; *** = P < 0.001; ** = P < 0.01; * = P < 0.05, n.s. = not significant).
| PERMANOVA Pairwise | |||
|---|---|---|---|
| Variable | Groups | t | P(perm) |
| Total abundance | Corallina elongata, Sandy bottom | 8.7 | *** |
| Corallina elongata, Cladophora prolifera | 5.0 | *** | |
| Sandy bottom, Cladophora prolifera | 4.0 | *** | |
| Prey < 1mm | Corallina elongata, Sandy bottom | 7.3 | *** |
| Corallina elongata, Cladophora prolifera | 4.6 | *** | |
| Sandy bottom, Cladophora prolifera | 2.2 | * | |
| Prey > 1mm | Corallina elongata, Sandy bottom | 3.8 | *** |
| Corallina elongata, Cladophora prolifera | 1.6 | n.s. | |
| Sandy bottom, Cladophora prolifera | 1.9 | * | |
| Taxa richness | Corallina elongata, Sandy bottom | 3.7 | *** |
| Corallina elongata, Cladophora prolifera | 3.1 | ** | |
| Sandy bottom, Cladophora prolifera | 0.6 | n.s. | |
| Community | Corallina elongata, Sandy bottom | 4.6 | *** |
| Corallina elongata, Cladophora prolifera | 2.9 | *** | |
| Sandy bottom, Cladophora prolifera | 3.1 | *** | |