Data/hora: 11/06/2024 12:20:51

Provedor de dados: | 83
País: | Brazil
Título: | Feeding habits of fish from a stream in the savanna of Central Brazil, Araguaia Basin
Autores: | Melo,Cesar Enrique de; Machado,Francisco de Arruda; Pinto-Silva,Vangil.
Data: | 2004-03-01
Ano: | 2004
Palavras-chave: | Neotropical fishes; Fish ecology; Trophic interactions; Riparian forest; Cerrado.
Resumo: | The objective of the present study was to determine the composition of the diet of fish and its relation to the condition of canopy along a stream in the savanna of Central Brazil. Fish were collected monthly from April 1994 to March 1995. A total of 3872 individuals belonging to 82 species were captured and 1606 of them had their stomach content analysed. Allochthonous resources were widely used by fish. Although some fish groups do present generalist habits, most of the species can be included in well-defined trophic groups. Piscivores were abundant only during the flooding season when they occupied the stream looking for food and reproduction sites. Deforestation of the riparian forest has negative effects on the fish populations that depend on allochthonous resources. Lack of vegetation near the mouth of the river allows sand accumulation on the bottom of the stream and destruction of important microhabitats used as feeding and shelter, a fact that excluded some species from this site.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100006
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252004000100006
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.2 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess