Tab. 2. Food items that accounted for the differences in the diet composition of Gymnorhamphichthys rondoni and Gymnotus coropinae based on the Similarity Percentage Analysis in first to third order streams at the Saracá-Taquera National Forest, Oriximiná, Pará. Codes: Inv.- Invertebrate; L - Larvae; N - Nymphs; and T - terrestrial.
| Food Items |
Average squared volume |
Contribution (%) |
Cumulative contribution (%) |
| G. rondoni (n = 41) |
G. coropinae (n = 60) |
| Sediment/Detritus |
0.64 |
0.41 |
18.07 |
18.07 |
| Ceratopogonidae (L) |
0.45 |
0.22 |
14.28 |
32.35 |
| Chironomidae (L) |
0.30 |
0.36 |
12.87 |
45.22 |
| Insect remains |
0.08 |
0.23 |
11.76 |
56.98 |
| Trichoptera (L) |
0.16 |
0.07 |
8.49 |
65.47 |
| Diptera (L) |
0.06 |
0.08 |
5.89 |
71.36 |
| Plant Remains |
0.03 |
0.10 |
5.77 |
77.13 |
| Arthropoda (T) |
0.05 |
0.07 |
4.59 |
81.72 |
| Ephemeroptera (N) |
0.01 |
0.08 |
4.30 |
86.01 |
| Coleoptera (L) |
0.06 |
0.03 |
3.85 |
89.01 |
| Eggs (Inv.) |
0.01 |
0.06 |
3.16 |
93.02 |