Table 1 in Diet of Bryconops alburnoides and B. caudomaculatus (Osteichthyes: Characiformes) in the region affected by Balbina Hydroelectric Dam (Amazon drainage, Brazil)

Table 1. Alimentary index (IAi%) based on stomach contents of Bryconops caudomaculatus and B. alburnoides in the region affected by the Balbina Reservoir, Uatumã River, Amazonas State, Brazil. ItemsB. caudomaculatus ReservoirB. caudomaculatus RiverB. alburnoides ReservoirAdult aquatic insects0.2580.9480.757Adult terrestrial insects76.72895.60226.254Immature aquatic insects21.3512.89869.206Fragments of unidentified insects0.7200.2201.065Fish0.7200.1190.091Plants0.0970.1070.057Detritus0.0240.0450.063Microcrustaceans0.5582.501Macroinvertebrates0.0240.0010.003Bird fragments0.002Phytoplankton<0.001Unidentified0.1200.060<0.001Number of full stomachs (empty stomachs)40 (23)42 (13)532 (322)Standard length, min – max (mean)72 -120 (97)57 - 116 (91)80 -140 (104)