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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Gibran, Fernando Zaniolo ; Ferreira, Katiane Mara ; Castro, Ricardo M. C. [3]
Total Authors: 3
Document type: Journal article
Source: Biota Neotropica; v. 1, n. 1/2 2001.
Field of knowledge: Biological Sciences - Zoology
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. (AU)

FAPESP's process: 98/05072-8 - Fish diversity of the headwaters and streams of the Upper Paraná River System in the State of São Paulo, Brazil
Grantee:Ricardo Macedo Corrêa e Castro
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants