Partição de recursos alimentares entre duas espécies de Bryconamericus Eingenmann, 1970 da bacia do rio Iguaçu, Brasil- DOI: 10.4025/actascibiolsci.v26i4.1534

Márcia Regina Russo; Norma Segatti Hahn; Carla Simone Pavanelli

doi:10.4025/actascibiolsci.v26i4.1534

**Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil** - DOI: 10.4025/actascibiolsci.v26i4.1534

Authors

Márcia Regina Russo UEM Author
Norma Segatti Hahn UEM Author
Carla Simone Pavanelli UEM Author

DOI:

https://doi.org/10.4025/actascibiolsci.v26i4.1534

Keywords:

partição de recursos, dieta, morfologia trófica, Bryconamericus, neotropical

Abstract

Diets of two species of Bryconamericus Eigenmann, 1907 called Bryconamericus sp. 1 and Bryconamericus sp. 2, were compared. Collections were made monthly, from March 1997 to February 1998, on the Iguaçu River, State of Paraná. Both species are insectivores, but Bryconamericus sp. 1 feed predominantly on larvae of aquatic insects and Bryconamericus sp. 2 feed on terrestrial insects. In Bryconamericus sp. 1, the mouth is sub-inferior with slightly thick upper lip, while in Bryconamericus sp. 2 the mouth is anterior with reduced lip; teeth are different in both species, confirming differences in feeding tactics. The length of the intestine is significantly longer in Bryconamericus sp. 1. This particularity and the low overlap values (< 0.60) suggest that interspecific differences in feeding habits play an important role, allowing species coexistence

Downloads

Download data is not yet available.

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

Downloads

PDF (Portuguese)

Published

2008-03-31

Issue

Vol. 26 No. 4 (2004)

Section

Biology Sciences

License

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

Read this link for further information on how to use CC BY 4.0 properly.

How to Cite

Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534. (2008). Acta Scientiarum. Biological Sciences, 26(4), 431-436. https://doi.org/10.4025/actascibiolsci.v26i4.1534