Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil

Detalhes bibliográficos
Autor(a) principal: Castro, Ricardo M. C.
Data de Publicação: 2005
Outros Autores: Casatti, Lilian [UNESP], Santos, Hertz F., Vari, Richard P., Melo, Alex L. A., Martins, Luiz S. F., Abreu, Tatiana X., Benine, Ricardo C., Gibran, Fernando Z., Ribeiro, Alexandre C., Bockmann, Flávio A., Carvalho, Murilo, Pelição, Gabriela Z. P., Ferreira, Katiane M., Stopiglia, Renata, Akama, Alberto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/224728
Resumo: The ichthyofauna of 24 stretches of streams, all of 100 m length and of fifth or lower order and most of second and third order, were sampled along four left bank tributaries (Rio do Peixe, Rio Aguapeí, Rio São José dos Dourados, lower Rio Tietê) of the main channel of the Rio Paraná in the state of São Paulo, southeastern Brazil. Sampling of the fish fauna at each of the six sites in the four basins incorporated a standardized fish collecting methodology and a standardized documentation of environmental data serving as the basis for a comparative analysis of the collecting locations. The 8,189 fish specimens collected represented six orders, 18 families, 42 genera, and 56 species, with a total biomass of 28.8 kg. Approximately 52% of the collected species were characiforms, 28% siluriforms, 9% gymnotiforms, 5% cyprinodontiforms, 4% perciforms, and 2% synbranchiforms. The most abundant of the species were the characiforms Astyanax altiparanae (15% of total) and Knodus moenkhausii (12% of total). The two species with the largest overall biomasses were A. altiparanae (34% of total biomass) and the siluriform Hypostomus sp. (8% of total biomass). Analysis of the trophic structure of the studied ichthyofauna indicated that the 10 numerically dominant species across the 24 sampled streams can be grouped into five guilds that are in decreasing order of numerical importance: omnivores, insectivores, insectivores/invertivores, periphytivores, and algivores. Species richness in the sampled stream stretches varied from six to 20 species with an average richness of 14. The species richness estimated by extrapolation for all 24 sampled stream stretches was 67 species. The Characidae are predominant among the collected specimens with approximately 50% of both individuals and biomass, a fact hypothesized to be a function of several attributes typical of the family. Six of the 56 collected species were new to science and six other species are of indefinite taxonomic status and require further analysis in order to determine their identity. © 2005 by Verlag Dr. Friedrich Pfeil.
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spelling Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, BrazilThe ichthyofauna of 24 stretches of streams, all of 100 m length and of fifth or lower order and most of second and third order, were sampled along four left bank tributaries (Rio do Peixe, Rio Aguapeí, Rio São José dos Dourados, lower Rio Tietê) of the main channel of the Rio Paraná in the state of São Paulo, southeastern Brazil. Sampling of the fish fauna at each of the six sites in the four basins incorporated a standardized fish collecting methodology and a standardized documentation of environmental data serving as the basis for a comparative analysis of the collecting locations. The 8,189 fish specimens collected represented six orders, 18 families, 42 genera, and 56 species, with a total biomass of 28.8 kg. Approximately 52% of the collected species were characiforms, 28% siluriforms, 9% gymnotiforms, 5% cyprinodontiforms, 4% perciforms, and 2% synbranchiforms. The most abundant of the species were the characiforms Astyanax altiparanae (15% of total) and Knodus moenkhausii (12% of total). The two species with the largest overall biomasses were A. altiparanae (34% of total biomass) and the siluriform Hypostomus sp. (8% of total biomass). Analysis of the trophic structure of the studied ichthyofauna indicated that the 10 numerically dominant species across the 24 sampled streams can be grouped into five guilds that are in decreasing order of numerical importance: omnivores, insectivores, insectivores/invertivores, periphytivores, and algivores. Species richness in the sampled stream stretches varied from six to 20 species with an average richness of 14. The species richness estimated by extrapolation for all 24 sampled stream stretches was 67 species. The Characidae are predominant among the collected specimens with approximately 50% of both individuals and biomass, a fact hypothesized to be a function of several attributes typical of the family. Six of the 56 collected species were new to science and six other species are of indefinite taxonomic status and require further analysis in order to determine their identity. © 2005 by Verlag Dr. Friedrich Pfeil.Laboratório de Ictiologia de Ribeirão Preto (LIRP) Departamento de Biologia FFCLRP-USP, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SPDepartamento de Zoologia e Botânica IBILCE Universidade Estadual Paulista, R. Cristovao Colombo 2265, 15054-000 Sao Jose do Rio Preto, SPDepartment of Vertebrate Zoology National Museum of Natural History Smithsonian Institution, Washington, DC 20560-0159Museu de Zoologia Universidade de São Paulo, Caixa Postal 42594, 04299-970 São Paulo, SPDepartamento de Zoologia e Botânica IBILCE Universidade Estadual Paulista, R. Cristovao Colombo 2265, 15054-000 Sao Jose do Rio Preto, SPUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Smithsonian InstitutionCastro, Ricardo M. C.Casatti, Lilian [UNESP]Santos, Hertz F.Vari, Richard P.Melo, Alex L. A.Martins, Luiz S. F.Abreu, Tatiana X.Benine, Ricardo C.Gibran, Fernando Z.Ribeiro, Alexandre C.Bockmann, Flávio A.Carvalho, MuriloPelição, Gabriela Z. P.Ferreira, Katiane M.Stopiglia, RenataAkama, Alberto2022-04-28T20:07:38Z2022-04-28T20:07:38Z2005-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article193-214Ichthyological Exploration of Freshwaters, v. 16, n. 3, p. 193-214, 2005.0936-9902http://hdl.handle.net/11449/2247282-s2.0-33645020256Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIchthyological Exploration of Freshwatersinfo:eu-repo/semantics/openAccess2022-04-28T20:07:38Zoai:repositorio.unesp.br:11449/224728Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:43:16.942590Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
title Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
spellingShingle Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
Castro, Ricardo M. C.
title_short Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
title_full Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
title_fullStr Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
title_full_unstemmed Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
title_sort Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Paraná basin, Brazil
author Castro, Ricardo M. C.
author_facet Castro, Ricardo M. C.
Casatti, Lilian [UNESP]
Santos, Hertz F.
Vari, Richard P.
Melo, Alex L. A.
Martins, Luiz S. F.
Abreu, Tatiana X.
Benine, Ricardo C.
Gibran, Fernando Z.
Ribeiro, Alexandre C.
Bockmann, Flávio A.
Carvalho, Murilo
Pelição, Gabriela Z. P.
Ferreira, Katiane M.
Stopiglia, Renata
Akama, Alberto
author_role author
author2 Casatti, Lilian [UNESP]
Santos, Hertz F.
Vari, Richard P.
Melo, Alex L. A.
Martins, Luiz S. F.
Abreu, Tatiana X.
Benine, Ricardo C.
Gibran, Fernando Z.
Ribeiro, Alexandre C.
Bockmann, Flávio A.
Carvalho, Murilo
Pelição, Gabriela Z. P.
Ferreira, Katiane M.
Stopiglia, Renata
Akama, Alberto
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)
Smithsonian Institution
dc.contributor.author.fl_str_mv Castro, Ricardo M. C.
Casatti, Lilian [UNESP]
Santos, Hertz F.
Vari, Richard P.
Melo, Alex L. A.
Martins, Luiz S. F.
Abreu, Tatiana X.
Benine, Ricardo C.
Gibran, Fernando Z.
Ribeiro, Alexandre C.
Bockmann, Flávio A.
Carvalho, Murilo
Pelição, Gabriela Z. P.
Ferreira, Katiane M.
Stopiglia, Renata
Akama, Alberto
description The ichthyofauna of 24 stretches of streams, all of 100 m length and of fifth or lower order and most of second and third order, were sampled along four left bank tributaries (Rio do Peixe, Rio Aguapeí, Rio São José dos Dourados, lower Rio Tietê) of the main channel of the Rio Paraná in the state of São Paulo, southeastern Brazil. Sampling of the fish fauna at each of the six sites in the four basins incorporated a standardized fish collecting methodology and a standardized documentation of environmental data serving as the basis for a comparative analysis of the collecting locations. The 8,189 fish specimens collected represented six orders, 18 families, 42 genera, and 56 species, with a total biomass of 28.8 kg. Approximately 52% of the collected species were characiforms, 28% siluriforms, 9% gymnotiforms, 5% cyprinodontiforms, 4% perciforms, and 2% synbranchiforms. The most abundant of the species were the characiforms Astyanax altiparanae (15% of total) and Knodus moenkhausii (12% of total). The two species with the largest overall biomasses were A. altiparanae (34% of total biomass) and the siluriform Hypostomus sp. (8% of total biomass). Analysis of the trophic structure of the studied ichthyofauna indicated that the 10 numerically dominant species across the 24 sampled streams can be grouped into five guilds that are in decreasing order of numerical importance: omnivores, insectivores, insectivores/invertivores, periphytivores, and algivores. Species richness in the sampled stream stretches varied from six to 20 species with an average richness of 14. The species richness estimated by extrapolation for all 24 sampled stream stretches was 67 species. The Characidae are predominant among the collected specimens with approximately 50% of both individuals and biomass, a fact hypothesized to be a function of several attributes typical of the family. Six of the 56 collected species were new to science and six other species are of indefinite taxonomic status and require further analysis in order to determine their identity. © 2005 by Verlag Dr. Friedrich Pfeil.
publishDate 2005
dc.date.none.fl_str_mv 2005-09-01
2022-04-28T20:07:38Z
2022-04-28T20:07:38Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Ichthyological Exploration of Freshwaters, v. 16, n. 3, p. 193-214, 2005.
0936-9902
http://hdl.handle.net/11449/224728
2-s2.0-33645020256
identifier_str_mv Ichthyological Exploration of Freshwaters, v. 16, n. 3, p. 193-214, 2005.
0936-9902
2-s2.0-33645020256
url http://hdl.handle.net/11449/224728
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ichthyological Exploration of Freshwaters
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv 193-214
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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