| Registro completo |
| Provedor de dados: |
Iheringia, Sér. Zool.
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| País: |
Brazil
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| Título: |
Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
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| Autores: |
Yafe,Alejandro
Loureiro,Marcelo
Scasso,Flavio
Quintans,Federico
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| Data: |
2002-12-01
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| Ano: |
2002
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| Palavras-chave: |
Diet
Freshwater trophic web
Cichlasoma
Gymnogeophagus
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| Resumo: |
Diet of two cichlid species, Cichlasoma facetum (Jenyns, 1842), and Gymnogeophagus rhabdotus Hensel, 1870, was studied in Rodó Lake, an urban hypertrophic lake in Uruguay. The stomach contents from 192 individuals of C. facetum and 202 of G. rhabdotus, obtained through seasonal sampling in the year 2000, were analyzed. The occurrence frequency and the alimentary importance index of each food item were calculated for each season and size class in both species. Cichlasoma facetum fed upon insects (mainly chironomid larvae and pupae), fish (Cnesterodon decemmaculatus Jenyns, 1842), and vegetals (algae, periphyton and macrophytes debris); large individuals also fed upon the freshwater shrimp Palaemonetes argentinus Nobili, 1901. Gymnogeophagus rhabdotus consumed zooplankton (mainly copepods), vegetals (algae and detritus) and Chironomidae larvae in a lesser extent.
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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=S0073-47212002000400009
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| Editor: |
Museu de Ciências Naturais
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| Relação: |
10.1590/S0073-47212002000400009
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| Formato: |
text/html
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| Fonte: |
Iheringia. Série Zoologia v.92 n.4 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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