Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1519-6984.20313 http://hdl.handle.net/11449/168069 |
Resumo: | The aim of this study was to compare the food composition of Rhamdia quelen in four distinct order rivers. It was performed at a low part at the basin of the Sorocaba river in systems classified as first (Anastácio stream), second (Nego stream), fifth (Tatuí river) and sixth (Sorocaba river) orders. Collections were performed every month between January and December of 2011. The stomach contents were examined by using the alimentary index (IAi) and compared by the non-parametric method non-metric multidimensional scale ranking (NMDS) with the Spearman rank correlation. A diet difference was observed for individuals of the smaller systems (Anastácio and Nego streams) and the larger ones (Tatui and Sorocaba rivers), represented respectively by allochthonous and autochthonous organisms compounding their diets. Marginal vegetation and its interaction with the water conditions may respond to these composition differences. |
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Repositório Institucional da UNESP |
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Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticosDifferences in the feeding of Rhamdia quelen (Siluriformes, Heptapteridae) in four distinct lotic systemsAlochthonous itemsAtlanticAutochthonous itemsOpportunist fishRain ForestSorocaba river basinThe aim of this study was to compare the food composition of Rhamdia quelen in four distinct order rivers. It was performed at a low part at the basin of the Sorocaba river in systems classified as first (Anastácio stream), second (Nego stream), fifth (Tatuí river) and sixth (Sorocaba river) orders. Collections were performed every month between January and December of 2011. The stomach contents were examined by using the alimentary index (IAi) and compared by the non-parametric method non-metric multidimensional scale ranking (NMDS) with the Spearman rank correlation. A diet difference was observed for individuals of the smaller systems (Anastácio and Nego streams) and the larger ones (Tatui and Sorocaba rivers), represented respectively by allochthonous and autochthonous organisms compounding their diets. Marginal vegetation and its interaction with the water conditions may respond to these composition differences.Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista – UNESP, C.P. 199, Av. 24-A, 1515Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista – UNESP, C.P. 199, Av. 24-A, 1515Universidade Estadual Paulista (Unesp)Villares Junior, G. A. [UNESP]Goitein, R. [UNESP]2018-12-11T16:39:27Z2018-12-11T16:39:27Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article650-654application/pdfhttp://dx.doi.org/10.1590/1519-6984.20313Brazilian Journal of Biology, v. 75, n. 3, p. 650-654, 2015.1678-43751519-6984http://hdl.handle.net/11449/16806910.1590/1519-6984.20313S1519-698420150004006502-s2.0-84943544225S1519-69842015000400650.pdf9317499005247273Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Biology0,523info:eu-repo/semantics/openAccess2023-12-18T06:19:13Zoai:repositorio.unesp.br:11449/168069Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:40:59.459928Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos Differences in the feeding of Rhamdia quelen (Siluriformes, Heptapteridae) in four distinct lotic systems |
title |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
spellingShingle |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos Villares Junior, G. A. [UNESP] Alochthonous items Atlantic Autochthonous items Opportunist fish Rain Forest Sorocaba river basin |
title_short |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
title_full |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
title_fullStr |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
title_full_unstemmed |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
title_sort |
Diferenças na alimentação de Rhamdia quelen em quatro diferentes ordens de sistemas lóticos |
author |
Villares Junior, G. A. [UNESP] |
author_facet |
Villares Junior, G. A. [UNESP] Goitein, R. [UNESP] |
author_role |
author |
author2 |
Goitein, R. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Villares Junior, G. A. [UNESP] Goitein, R. [UNESP] |
dc.subject.por.fl_str_mv |
Alochthonous items Atlantic Autochthonous items Opportunist fish Rain Forest Sorocaba river basin |
topic |
Alochthonous items Atlantic Autochthonous items Opportunist fish Rain Forest Sorocaba river basin |
description |
The aim of this study was to compare the food composition of Rhamdia quelen in four distinct order rivers. It was performed at a low part at the basin of the Sorocaba river in systems classified as first (Anastácio stream), second (Nego stream), fifth (Tatuí river) and sixth (Sorocaba river) orders. Collections were performed every month between January and December of 2011. The stomach contents were examined by using the alimentary index (IAi) and compared by the non-parametric method non-metric multidimensional scale ranking (NMDS) with the Spearman rank correlation. A diet difference was observed for individuals of the smaller systems (Anastácio and Nego streams) and the larger ones (Tatui and Sorocaba rivers), represented respectively by allochthonous and autochthonous organisms compounding their diets. Marginal vegetation and its interaction with the water conditions may respond to these composition differences. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2018-12-11T16:39:27Z 2018-12-11T16:39:27Z |
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 |
http://dx.doi.org/10.1590/1519-6984.20313 Brazilian Journal of Biology, v. 75, n. 3, p. 650-654, 2015. 1678-4375 1519-6984 http://hdl.handle.net/11449/168069 10.1590/1519-6984.20313 S1519-69842015000400650 2-s2.0-84943544225 S1519-69842015000400650.pdf 9317499005247273 |
url |
http://dx.doi.org/10.1590/1519-6984.20313 http://hdl.handle.net/11449/168069 |
identifier_str_mv |
Brazilian Journal of Biology, v. 75, n. 3, p. 650-654, 2015. 1678-4375 1519-6984 10.1590/1519-6984.20313 S1519-69842015000400650 2-s2.0-84943544225 S1519-69842015000400650.pdf 9317499005247273 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Biology 0,523 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
650-654 application/pdf |
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 |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129233712578560 |