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

Detalhes bibliográficos
Autor(a) principal: Castro, RMC
Data de Publicação: 2005
Outros Autores: Casatti, L., Santos, H. E., Vari, R. P., Melo, ALA, Martins, LSE, Abreu, T. X., Benine, R. C., Gibran, F. Z., Ribeiro, A. C., Bockmann, F. A., Carvalho, M., Pelicao, GZP, Ferreira, K. M., Stopiglia, R., Akama, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.pfeil-verlag.de/04biol/pdf/ief16_3_01.pdf
http://hdl.handle.net/11449/22310
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 Aguapei, Rio Sao Jose dos Dourados, lower Rio Tiete of the main channel of the Rio Parana 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.
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spelling Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana 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 Aguapei, Rio Sao Jose dos Dourados, lower Rio Tiete of the main channel of the Rio Parana 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.USP, FFCLRP, Dept Biol, LIRP, BR-14040901 Ribeirao Preto, BrazilUniv Estadual Paulista, IBILCE, Dept Zool & Bot, BR-15054000 Sao Jose do Rio Preto, SP, BrazilNatl Museum Nat Hist, Div Fishes, Dept Vertebrate Zool, Smithsonian Inst, Washington, DC 20560 USAUniv São Paulo, Museu Zool, BR-04299970 São Paulo, BrazilUniv Estadual Paulista, IBILCE, Dept Zool & Bot, BR-15054000 Sao Jose do Rio Preto, SP, BrazilVerlag Dr. Friedrich PfeilUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Natl Museum Nat HistCastro, RMCCasatti, L.Santos, H. E.Vari, R. P.Melo, ALAMartins, LSEAbreu, T. X.Benine, R. C.Gibran, F. Z.Ribeiro, A. C.Bockmann, F. A.Carvalho, M.Pelicao, GZPFerreira, K. M.Stopiglia, R.Akama, A.2014-05-20T14:03:19Z2014-05-20T14:03:19Z2005-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article193-214http://www.pfeil-verlag.de/04biol/pdf/ief16_3_01.pdfIchthyological Exploration of Freshwaters. Munich: Verlag Dr. Friedrich Pfeil, v. 16, n. 3, p. 193-214, 2005.0936-9902http://hdl.handle.net/11449/22310WOS:0002317253000018041011456158217Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIchthyological Exploration of Freshwaters0.7830,714info:eu-repo/semantics/openAccess2021-10-23T03:22:29Zoai:repositorio.unesp.br:11449/22310Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:12:52.869132Repositório 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 Parana basin, Brazil
title Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
spellingShingle Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
Castro, RMC
title_short Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
title_full Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
title_fullStr Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
title_full_unstemmed Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
title_sort Structure and composition of the stream ichthyofauna of four tributary rivers of the upper Rio Parana basin, Brazil
author Castro, RMC
author_facet Castro, RMC
Casatti, L.
Santos, H. E.
Vari, R. P.
Melo, ALA
Martins, LSE
Abreu, T. X.
Benine, R. C.
Gibran, F. Z.
Ribeiro, A. C.
Bockmann, F. A.
Carvalho, M.
Pelicao, GZP
Ferreira, K. M.
Stopiglia, R.
Akama, A.
author_role author
author2 Casatti, L.
Santos, H. E.
Vari, R. P.
Melo, ALA
Martins, LSE
Abreu, T. X.
Benine, R. C.
Gibran, F. Z.
Ribeiro, A. C.
Bockmann, F. A.
Carvalho, M.
Pelicao, GZP
Ferreira, K. M.
Stopiglia, R.
Akama, A.
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)
Natl Museum Nat Hist
dc.contributor.author.fl_str_mv Castro, RMC
Casatti, L.
Santos, H. E.
Vari, R. P.
Melo, ALA
Martins, LSE
Abreu, T. X.
Benine, R. C.
Gibran, F. Z.
Ribeiro, A. C.
Bockmann, F. A.
Carvalho, M.
Pelicao, GZP
Ferreira, K. M.
Stopiglia, R.
Akama, A.
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 Aguapei, Rio Sao Jose dos Dourados, lower Rio Tiete of the main channel of the Rio Parana 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.
publishDate 2005
dc.date.none.fl_str_mv 2005-09-01
2014-05-20T14:03:19Z
2014-05-20T14:03:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.pfeil-verlag.de/04biol/pdf/ief16_3_01.pdf
Ichthyological Exploration of Freshwaters. Munich: Verlag Dr. Friedrich Pfeil, v. 16, n. 3, p. 193-214, 2005.
0936-9902
http://hdl.handle.net/11449/22310
WOS:000231725300001
8041011456158217
url http://www.pfeil-verlag.de/04biol/pdf/ief16_3_01.pdf
http://hdl.handle.net/11449/22310
identifier_str_mv Ichthyological Exploration of Freshwaters. Munich: Verlag Dr. Friedrich Pfeil, v. 16, n. 3, p. 193-214, 2005.
0936-9902
WOS:000231725300001
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dc.relation.none.fl_str_mv Ichthyological Exploration of Freshwaters
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publisher.none.fl_str_mv Verlag Dr. Friedrich Pfeil
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