caa a22 4500 477115381 CHVBK 20180405111621.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00001701 doi (NATIONALLICENCE)springer-10.1007/BF00001701 Esteves Katharina Instituto de Pesca, Secretaria da Agricultura e Abastecimento do Estado de São Paulo, Av. Francisco Matarazzo, 455, CEP:05031-900, São Paulo, Brazil aut Feeding ecology of three Astyanax species (Characidae, Tetragonopterinae) from a floodplain lake of Mogi-Guaçú River, Paraná River Basin, Brazil [Elektronische Daten] [Katharina Esteves] Synopsis: The feeding ecology of three characids (A. fasciatus, A. bimaculatus and A. schubarti) was studied monthly during 1988 in Lake Inferñao, a major floodplain lake of the Mogi-Guaçú River in the State of São Paulo. River flooding directly influenced the diet of the omnivorous A. bimaculatus and A. fasciatus which responded to maximum inundation (March) by consuming predominantly allochthonous insects. In contrast, A. schubarti was less influenced by the river flood cycle on qualitative changes in diet and relied basically on aquatic macrophytes and periphytic algae. The importance of zooplankton in the diet of the three species was low, and may be attributed to its low density in the water column (< 1 ind l−1). Ontogenetic diet changes were evident for the three species. For A. fasciatus and A. bimaculatus the importance of zooplankton was high at the early stages, decreasing with size. A. schubarti at younger stages consumed diversified items which gradually decreased quantitatively up to the size class of 65 mm; from this size onwards, the diet became restricted to the consumption of periphytic algae and macrophytes. Kluwer Academic Publishers, 1996 Diet nationallicence Freshwater fish nationallicence Feeding behavior nationallicence Zooplankton nationallicence Tropical floodplain nationallicence Environmental Biology of Fishes Kluwer Academic Publishers 46/1(1996-05-01), 83-101 0378-1909 46:1<83 1996 46 10641 https://doi.org/10.1007/BF00001701 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00001701 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Esteves Katharina Instituto de Pesca, Secretaria da Agricultura e Abastecimento do Estado de São Paulo, Av. Francisco Matarazzo, 455, CEP:05031-900, São Paulo, Brazil aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 46/1(1996-05-01), 83-101 0378-1909 46:1<83 1996 46 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer