Estudo comparativo da dieta, hábitos alimentares e morfologia trófica de duas espécies simpátricas, de peixes de pequeno porte, associados Ã  macrófitas aquáticas - DOI: 10.4025/actascibiolsci.167

Norma Segatti Hahn; Valdirene Esgarbossa Loureiro-Crippa

doi:10.4025/actascibiolsci.v28i4.167

Comparative study about diet, feeding habits and trophic morphology of two sympatric species of small fishes in association with aquatic macrophytes- DOI: 10.4025/actascibiolsci.167

Authors

Norma Segatti Hahn UEM Author
Valdirene Esgarbossa Loureiro-Crippa UEM Author

DOI:

https://doi.org/10.4025/actascibiolsci.v28i4.167

Keywords:

alimentação, segregação trófica, peixes, lagoas, planície de inundação, macrófitas aquáticas

Abstract

In this study we analyzed the diet and trophic morphology of two species, one of Cheirodontinae and one of Aphyocharacinae, associated with aquatic macrophytes in nine isolated lagoons of the Paraná river floodplain, Brazil, during 2001. Diet showed that Aphyocharax anisitsi feed mainly on microcrustaceans and Serrapinnus notomelas feed mainly on algae. Trophic morphology, including mouth, tooth, gill rakers and stomach showed apparently the same pattern for the two species. However, teeth are the biggest and the hardest in S. notomelas. Regarding intestine length there was significant interaction between standard length (F_2.215 = 74.89; p<0.0001) and the species (F_1.215 = 4.72; p<0.0001). Higher mean of intestine length was verified in S. notomelas and a smaller mean in A. anisitsi. Based on dates of diet and morphology, it is possible to conclude that there are trophic segregation between the two species. Thus, the co-existence of these species is possible in function of the wide food supply given by aquatic macrophytes.

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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

2006-11-16

Issue

Vol. 28 No. 4 (2006)

Section

Ecology and Limnology

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How to Cite

Comparative study about diet, feeding habits and trophic morphology of two sympatric species of small fishes in association with aquatic macrophytes- DOI: 10.4025/actascibiolsci.167. (2006). Acta Scientiarum. Biological Sciences, 28(4), 359-363. https://doi.org/10.4025/actascibiolsci.v28i4.167