| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Diet of Astyanax species (Teleostei, Characidae) in an Atlantic Forest River in Southern Brazil
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| Autores: |
Vilella,Fábio Silveira
Becker,Fernando Gertum
Hartz,Sandra Maria
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| Data: |
2002-06-01
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| Ano: |
2002
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| Palavras-chave: |
Diet
Seed dispersal
Fish
Astyanax
Atlantic Forest
Brazil
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| Resumo: |
Feeding habits of six species of Astyanax from river Maquiné are described. Fishes were sampled bi-monthly from November/95 to September/96 in two zones of the river. Items were identified, counted and had their abundance estimated according to a semi-quantitative scale. Frequency of occurrence, alimentary importance index (IFI) values and a similarity analysis of diets for each species-river zone sample were examined. All the species were considered typically omnivorous, with insects and vegetal matter being the most important items in their diet. These species could act as seed dispersers, particularly for macrophytes. Intra-specific spatial differences were not observed in comparisons of samples from two diferent regions of the river, except for A. fasciatus. The presence of Podostemaceae macrophytes in the mid-course of the river seemed to be important both as an autochthonous food resource and as habitat for several organisms preyed by the Astyanax species.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200015
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89132002000200015
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.45 n.2 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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