Diet of Crenicichla britskii (Perciformes: Cichlidae) in a stream of Rio Aguapeí basin, Upper Rio Paraná system, southeastern Brazil

Authors

  • Fernando Zaniolo Gibran Universidade de São Paulo, FFCLRP, Departamento de Biologia
  • Katiane Mara Ferreira Universidade de São Paulo, FFCLRP, Departamento de Biologia
  • Ricardo M. C. Castro Universidade de São Paulo, FFCLRP, Departamento de Biologia

Keywords:

Cichlidae, Crenicichla britskii, diet, Upper Rio Paraná system, southeastern Brazil

Abstract

We qualitatively studied the gut contents of 20 specimens (36.1-71.3 mm standard length) of the pike cichlid Crenicichla britskii from a 100 m stretched second order stream running inside a small gallery forest in a large pasture area of Rio Aguapeí basin, State of São Paulo, southeastern Brazil. The diet, in terms of per cent composition, constituted primarily of aquatic insects (50%) (mostly immature forms), crustaceans (14.3%), unidentified organic material and filamentous green algae (both with 10.7%), followed by fishes and arachnids (both with 7.1%). Diet analysis indicates that C. britskii is a generalist insectivore with a relatively short digestive tube, which feeds on autochthonous items captured in a broad array of habitats such as in the water column or at the surface, buried in or over the bottom, or associated with macrophytes and submerged vegetation debris.

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Published

2001-01-01

How to Cite

Gibran, F. Z., Ferreira, K. M., & Castro, R. M. C. (2001). Diet of Crenicichla britskii (Perciformes: Cichlidae) in a stream of Rio Aguapeí basin, Upper Rio Paraná system, southeastern Brazil. Biota Neotropica, 1(1-2). Retrieved from //www.biotaneotropica.org.br/BN/article/view/1143

Issue

Section

Short Communications

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