Estudo da dieta natural de peixes no reservatório de Ribeirão das Lajes, Rio de Janeiro, Brasil - DOI: 10.4025/actascibiolsci.v27i4.1270

Ana Carolina Monteiro Iozzi Dias; Christina Wyss Castelo Branco; Vanessa Guimarães Lopes

doi:10.4025/actascibiolsci.v27i4.1270

The study of fish natural diet from Ribeirão das Lajes reservoir, Rio de Janeiro State, Brazil - DOI: 10.4025/actascibiolsci.v27i4.1270

Authors

Ana Carolina Monteiro Iozzi Dias Universidade Federal do Rio de Janeiro Author
Christina Wyss Castelo Branco Universidade Federal do Rio de Janeiro Author
Vanessa Guimarães Lopes Universidade Federal do Rio de Janeiro Author

DOI:

https://doi.org/10.4025/actascibiolsci.v27i4.1270

Keywords:

ictiofauna, predação, reservatório, interações tróficas, Rio de Janeiro

Abstract

The 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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Author Biography

Ana Carolina Monteiro Iozzi Dias, Universidade Federal do Rio de Janeiro

É pós graduada em Gestão e Controle Ambiental pela Universidade Gama Filho (2006), possui graduação em Licenciatura em Ciências Biológicas pela Universidade Federal do Estado do Rio de Janeiro (UNIRIO - 2005) e graduação em Ciências Biológicas pela UNIRIO (2004). Atualmente é aluna de mestrado do curso de Ciência de Alimentos do Instituto de Química da UFRJ e desenvolve a dissertação no Instituto de Biofísica Carlos Chagas Filho (UFRJ) na área de contaminantes de cadeia trófica. Tem experiência na área de Ecologia e Limnologia de reservatórios, com ênfase em Ecologia Trófica Currículo Lattes

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Published

2008-03-24

Issue

Vol. 27 No. 4 (2005)

Section

Ecology and Limnology

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How to Cite

The study of fish natural diet from Ribeirão das Lajes reservoir, Rio de Janeiro State, Brazil - DOI: 10.4025/actascibiolsci.v27i4.1270. (2008). Acta Scientiarum. Biological Sciences, 27(4), 355-364. https://doi.org/10.4025/actascibiolsci.v27i4.1270