Comparação da dieta de duas espécies de Triportheus (Characidae, Triportheinae), em trechos do reservatório de Manso e lagoas do rio Cuiabá, Estado do Mato Grosso - DOI: 10.4025/actascibiolsci.v25i2.2023

André Beal Galina; Norma Segatti Hahn

doi:10.4025/actascibiolsci.v25i2.2023

Diet Comparison of two species of Triportheus in Manso Reservoir and lagoons of Cuiabá River, Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v25i2.2023

André Beal Galina UEM
Norma Segatti Hahn UEM

DOI: https://doi.org/10.4025/actascibiolsci.v25i2.2023

Abstract

The aim of this paper is to determine the diet of two species of Triportheus (T. paranensis e T. nematurus), in Manso Reservoir and lagoons of Cuiabá River, MT. Samples were monthly taken from March 2000 to February 2001. Stomach contents were analyzed by the occurrence and volumetric methods, and data were graphically grouped by Costello Index. The diet of T. nematurus was composed of terrestrial (Hymenoptera and Coleoptera) and aquatic insects (larvae of Diptera) in the reservoir. In lagoons it consumed algae and terrestrial insects during the flood period, and the diet was more diversified during the dry season. In the reservoir, T. paranensis consumed specially aquatic invertebrates, while in lagoons its diet was composed of terrestrial insects in dry season and aquatic insects in flood period. Schoener Index presented low values (< 0,6), showing partial segregation in both species diet

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Author Biography

Norma Segatti Hahn, UEM

Graduada em Ciências Biológicas pela Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)(1978), mestrado (1983) e doutorado (1992) em Ciências Biológicas (Zoologia) pela Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP-Rio Claro). Atualmente é Prof. Associado nível C da Universidade Estadual de Maringá, atuando como docente e orientadora no curso de Graduação em Ciências Biológicas e no programa de Pós- graduação em Ecologia de Ambientes Aquáticos Continentais. Tem experiência na área de Ecologia, com ênfase em Ecologia de Ecossistemas, atuando principalmente nos seguintes temas: peixes, alimentação, reservatórios, planície de inundação Currículo Lattes

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Published

2008-04-17

How to Cite

Galina, A. B., & Hahn, N. S. (2008). Diet Comparison of two species of Triportheus in Manso Reservoir and lagoons of Cuiabá River, Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v25i2.2023. Acta Scientiarum. Biological Sciences, 25(2), 345-352. https://doi.org/10.4025/actascibiolsci.v25i2.2023

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Issue

Vol 25 No 2 (2003)

Section

Biology Sciences

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