Oportunismo trófico de Geophagus brasiliensis (Quoy & Gaimard, 1824) (Osteichthyes, Cichlidae) no reservatório de Capivari, Estado do Paraná, Brasil - DOI: 10.4025/actascibiolsci.v26i1.1657

Milza Celi Fedatto Abelha; Erivelto Goulart

doi:10.4025/actascibiolsci.v26i1.1657

Trophic opportunism of Geophagus brasiliensis (Quoy and Gaimard, 1824) (Osteichthyes, Cichlidae) in Capivari Reservoir, state of Paraná, Brazil - DOI: 10.4025/actascibiolsci.v26i1.1657

Milza Celi Fedatto Abelha UEM
Erivelto Goulart UEM

DOI: https://doi.org/10.4025/actascibiolsci.v26i1.1657

Abstract

The feeding of adult Geophagus brasiliensis (Quoy and Gaimard, 1824) (Osteichthyes, Cichlidae) was investigated through the analysis of 149 stomachs contents collected quarterly at the Capivari Reservoir (28º8’34”S/48º58’55”W), state of Paraná, Brazil, during 1996 and 1998. Food spectrum was evaluated by frequency of occurrence and volumetric methods and also Alimentary Index (IAi). Spatial and temporal variations in the diet were assessed by analysis of variance (ANOVA/One-Way) of null models, using the axes scores of a detrented correspondence analysis (DCA). The years, the sampling sets and the seasons in relation to feeding resources were arranged. Results showed an omnivorous diet based on fruits/seeds (the most dominant), detritus, sediments, aquatic invertebrates and fish scales. The diet presented significant space-temporal differences, and consumption of food occured with higher disponibility, characterizing the trophic opportunism of the species

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Author Biography

Milza Celi Fedatto Abelha, UEM

possui graduação em Ciências Biológicas pela Universidade Estadual de Maringá (1982), graduação em Medicina Veterinária pela Universidade Estadual de Londrina (1987), mestrado em Ecologia de Ambientes Aquáticos Continentais pela Universidade Estadual de Maringá (2001) e doutorado em Ecologia de Ambientes Aquáticos Continentais pela Universidade Estadual de Maringá (2007). Atualmente é professora da Universidade Estadual de Mato Grosso do Sul. Tem experiência na área de Ecologia, com ênfase em alimentação de peixes de água doce Currículo Lattes

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Published

2008-04-01

How to Cite

Abelha, M. C. F., & Goulart, E. (2008). Trophic opportunism of Geophagus brasiliensis (Quoy and Gaimard, 1824) (Osteichthyes, Cichlidae) in Capivari Reservoir, state of Paraná, Brazil - DOI: 10.4025/actascibiolsci.v26i1.1657. Acta Scientiarum. Biological Sciences, 26(1), 37-45. https://doi.org/10.4025/actascibiolsci.v26i1.1657

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Issue

Vol 26 No 1 (2004)

Section

Biology Sciences

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