Figure 3
100
Percentage Dry Weight
80
60
40
20
10 20 30
Period of immersion (days)
50 60
20
...
LO
40
197
Percentage Protein
Percentage Dry weight
Percentage Protein
proportion of the gut contents of many animals including M. cephalus and S. mossambicus. The results in Table 5 together with information from the literature, enables the following trophic structure to be constructed:
Trophic level I (Primary producers)
Macroscopic algae, eg. Ceramium sp. Phytoplankton
Periphyton
Higher plants (as detritus)
Trophic level II (Herbivores)
Herbivorous fishes: striped mullet, tilapia.
Crustacean larvae
Copepods
Amphipods
Isopods
Oysters Protozoa