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Title: Seasonal diet shifts of seven fish species in an Atlantic rainforest stream in Southeastern Brazil.
Authors: Deus, C. P.
Petrere, Miguel
Keywords: Fresh Water
Feeding Behavior
Food Preference
Stomach Juice
Feeding Behavior
Food Preferences
Fresh Water
Gastrointestinal Contents
Issue Date: 2003
metadata.dc.publisher.journal: Revista Brasileira de Biologia
metadata.dc.relation.ispartof: Volume 63, Número 4, Pags. 579-588
Abstract: We analyzed the stomach contents of 116 individuals belonging to seven fishes species in order to investigate seasonal changes in feeding strategy and how trophic interactions between species affect community structure in an Atlantic rainforest stream in Southeastern Brazil. Oligosarcus hepsetus and Pimelodus sp. consumed fewer items during the winter. Phalloceros caudimaculatus switched feeding habits from detritus during summer to algae during winter. These examples are related to variations in food availability and species feeding selectivity. The highest diet overlap values, for most species, as measured using Schoener's index, were observed in summer, along with a species tendency to be more generalist. Feeding pattern variation may influence the fish community structure.
metadata.dc.identifier.doi: 10.1590/S1519-69842003000400005
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