Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake

Detalhes bibliográficos
Autor(a) principal: Yafe,Alejandro
Data de Publicação: 2002
Outros Autores: Loureiro,Marcelo, Scasso,Flavio, Quintans,Federico
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Iheringia. Série Zoologia
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400009
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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spelling Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lakeDietfreshwater trophic webCichlasomaGymnogeophagusDiet 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.Museu de Ciências Naturais2002-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400009Iheringia. Série Zoologia v.92 n.4 2002reponame:Iheringia. Série Zoologiainstname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)instacron:FZB/RS10.1590/S0073-47212002000400009info:eu-repo/semantics/openAccessYafe,AlejandroLoureiro,MarceloScasso,FlavioQuintans,Federicoeng2003-02-24T00:00:00Zoai:scielo:S0073-47212002000400009Revistahttp://www.scielo.br/iszPUBhttps://old.scielo.br/oai/scielo-oai.php||iheringia-zoo@fzb.rs.gov.br1678-47660073-4721opendoar:2003-02-24T00:00Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)false
dc.title.none.fl_str_mv Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
title Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
spellingShingle Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
Yafe,Alejandro
Diet
freshwater trophic web
Cichlasoma
Gymnogeophagus
title_short Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
title_full Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
title_fullStr Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
title_full_unstemmed Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
title_sort Feeding of two Cichlidae species (Perciformes) in an hypertrophic urban lake
author Yafe,Alejandro
author_facet Yafe,Alejandro
Loureiro,Marcelo
Scasso,Flavio
Quintans,Federico
author_role author
author2 Loureiro,Marcelo
Scasso,Flavio
Quintans,Federico
author2_role author
author
author
dc.contributor.author.fl_str_mv Yafe,Alejandro
Loureiro,Marcelo
Scasso,Flavio
Quintans,Federico
dc.subject.por.fl_str_mv Diet
freshwater trophic web
Cichlasoma
Gymnogeophagus
topic Diet
freshwater trophic web
Cichlasoma
Gymnogeophagus
description 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.
publishDate 2002
dc.date.none.fl_str_mv 2002-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0073-47212002000400009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Museu de Ciências Naturais
publisher.none.fl_str_mv Museu de Ciências Naturais
dc.source.none.fl_str_mv Iheringia. Série Zoologia v.92 n.4 2002
reponame:Iheringia. Série Zoologia
instname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)
instacron:FZB/RS
instname_str Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)
instacron_str FZB/RS
institution FZB/RS
reponame_str Iheringia. Série Zoologia
collection Iheringia. Série Zoologia
repository.name.fl_str_mv Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)
repository.mail.fl_str_mv ||iheringia-zoo@fzb.rs.gov.br
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