Produção Nacional
Revisado por pares
Estudo da dieta natural de peixes no reservatório de Ribeirão das Lajes, Rio de Janeiro, Brasil
2005; Editora da Universidade Estadual de Maringá (Eduem); Volume: 27; Issue: 4 Linguagem: Inglês
10.4025/actascibiolsci.v27i4.1270
ISSN1807-863X
AutoresAna Carolina Monteiro Iozzi Dias, Christina Wyss Castelo Branco, Vanessa Guimarães Lopes,
Tópico(s)Aquaculture Nutrition and Growth
ResumoThe aim of this study was to know the natural diet of species from Ribeirão das Lajes reservoir, from the stomach content analysis of fishes captured in two different seasons by using gillnets. Characterizing the natural diet, the methods of frequency of occurrence and abundance percentage of items from the diet were applied. Eleven species were registered, representing approximately 62% of the listed species for that reservoir, being Trachelyopterus striatulus and Metynnis maculates the most abundant. These two species, as well as Geophagus brasiliensis and Tilapia rendalli showed an omnivorous microphageous habit and also showed a great diversity in choosing food items, due to the consumption of items from the water column and also from the forest-water ecotone. Astyanax bimaculatus also presented an omnivorous habit, although with a tendency to insectivore while Oligosarcus hepsetus and Cichla monoculus showed a piscivorous habit
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