Prey category | Diet | Macroinvertebrate | Electivity (E i) | ||
---|---|---|---|---|---|
N | %N | N | %N | ||
Annelida-Lumbricidae | 22 | 4.5 | 1316 | 27.20 | −0.72b |
Amphipoda-Gammaridae | 48 | 9.82 | 590 | 12.19 | −0.11 |
Diptera-Mycetophilidae | 120 | 24.54 | 971 | 20.06 | 0.10 |
Diptera-Cecidomyiidae | 13 | 2.66 | 85 | 1.76 | 0.20 |
Hemiptera-Veliidae | 4 | 0.82 | 51 | 1.05 | −0.13 |
Coleoptera-Dytiscidae | 5 | 1.02 | 93 | 1.92 | −0.31 |
Coleoptera-Elmidae | 1 | 0.2 | 7 | 0.14 | 0.17 |
Ephemeroptera-Baetidae | 96 | 19.63 | 289 | 6.16 | 0.52a |
Ephemeroptera- Heptageniidae | 9 | 1.84 | 335 | 6.92 | −0.58b |
Trichoptera-Hydropsychidae | 25 | 5.11 | 309 | 6.39 | −0.11 |
Hymenoptera-Formicidae | 3 | 0.61 | 13 | 0.27 | 0.39 |
Mesogastropoda-Bithynidae | 9 | 1.84 | 6 | 0.12 | 0.87a |
Veneroida-Corbiculidae | 117 | 23.93 | 77 | 1.6 | 0.88a |
Tricladida-Planariidae | 8 | 1.64 | 450 | 9.3 | −0.70b |
Orthoptera-Caelifera | 5 | 1.02 | 0 | 0 | 1a |
Eggs (of themselves) | 4 | 0.82 | 0 | 0 | 1a |
Hygrophila-Planorbidae | 0 | 0 | 6 | 0.12 | −1b |
Diptera-Tipulidae | 0 | 0 | 32 | 0.66 | −1b |
Diptera-Chamaemyiidae | 0 | 0 | 119 | 2.5 | −1b |
Ephemeroptera-Ephemeridae | 0 | 0 | 81 | 1.67 | −1b |
Total | 489 | 100 | 4,839 | 100 |