Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability

Detalhes bibliográficos
Autor(a) principal: Dias,Rosa Maria
Data de Publicação: 2017
Outros Autores: Ortega,Jean Carlo Gonçalves, Gomes,Luiz Carlos, Agostinho,Angelo Antonio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Iheringia. Série Zoologia
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100292
Resumo: ABSTRACT. The relationships between the degree of dietary overlap and food availability, and implications for food selectivity of fish species were evaluated at floodplain lakes on the upper Paraná River floodplain, Brazil. The hypothesis tested were: i) species become less selective in lakes with high availability of food resources; and ii) species (interspecific) or individual (intraspecific) present higher food overlap in conditions of high availability of food resources. In general, with the results was observed that species become less selective when the environment provided higher availability of food resources. Interspecific overlap did not show a pattern when evaluating availability of food resources in the lakes. However, intraspecific overlap tended to be more accentuated in conditions of high availability of resource food.
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spelling Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availabilityFish feedingelectivityParaná RiverABSTRACT. The relationships between the degree of dietary overlap and food availability, and implications for food selectivity of fish species were evaluated at floodplain lakes on the upper Paraná River floodplain, Brazil. The hypothesis tested were: i) species become less selective in lakes with high availability of food resources; and ii) species (interspecific) or individual (intraspecific) present higher food overlap in conditions of high availability of food resources. In general, with the results was observed that species become less selective when the environment provided higher availability of food resources. Interspecific overlap did not show a pattern when evaluating availability of food resources in the lakes. However, intraspecific overlap tended to be more accentuated in conditions of high availability of resource food.Museu de Ciências Naturais2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100292Iheringia. Série Zoologia v.107 2017reponame:Iheringia. Série Zoologiainstname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)instacron:FZB/RS10.1590/1678-4766e2017035info:eu-repo/semantics/openAccessDias,Rosa MariaOrtega,Jean Carlo GonçalvesGomes,Luiz CarlosAgostinho,Angelo Antonioeng2017-10-16T00:00:00Zoai:scielo:S0073-47212017000100292Revistahttp://www.scielo.br/iszPUBhttps://old.scielo.br/oai/scielo-oai.php||iheringia-zoo@fzb.rs.gov.br1678-47660073-4721opendoar:2017-10-16T00:00Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)false
dc.title.none.fl_str_mv Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
title Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
spellingShingle Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
Dias,Rosa Maria
Fish feeding
electivity
Paraná River
title_short Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
title_full Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
title_fullStr Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
title_full_unstemmed Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
title_sort Trophic relationships in fish assemblages of Neotropical floodplain lakes: selectivity and feeding overlap mediated by food availability
author Dias,Rosa Maria
author_facet Dias,Rosa Maria
Ortega,Jean Carlo Gonçalves
Gomes,Luiz Carlos
Agostinho,Angelo Antonio
author_role author
author2 Ortega,Jean Carlo Gonçalves
Gomes,Luiz Carlos
Agostinho,Angelo Antonio
author2_role author
author
author
dc.contributor.author.fl_str_mv Dias,Rosa Maria
Ortega,Jean Carlo Gonçalves
Gomes,Luiz Carlos
Agostinho,Angelo Antonio
dc.subject.por.fl_str_mv Fish feeding
electivity
Paraná River
topic Fish feeding
electivity
Paraná River
description ABSTRACT. The relationships between the degree of dietary overlap and food availability, and implications for food selectivity of fish species were evaluated at floodplain lakes on the upper Paraná River floodplain, Brazil. The hypothesis tested were: i) species become less selective in lakes with high availability of food resources; and ii) species (interspecific) or individual (intraspecific) present higher food overlap in conditions of high availability of food resources. In general, with the results was observed that species become less selective when the environment provided higher availability of food resources. Interspecific overlap did not show a pattern when evaluating availability of food resources in the lakes. However, intraspecific overlap tended to be more accentuated in conditions of high availability of resource food.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
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=S0073-47212017000100292
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100292
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1678-4766e2017035
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.107 2017
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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