Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1534 |
Resumo: | Diets of two species of Bryconamericus Eigenmann, 1907 called Bryconamericus sp. 1 and Bryconamericus sp. 2, were compared. Collections were made monthly, from March 1997 to February 1998, on the Iguaçu River, State of Paraná. Both species are insectivores, but Bryconamericus sp. 1 feed predominantly on larvae of aquatic insects and Bryconamericus sp. 2 feed on terrestrial insects. In Bryconamericus sp. 1, the mouth is sub-inferior with slightly thick upper lip, while in Bryconamericus sp. 2 the mouth is anterior with reduced lip; teeth are different in both species, confirming differences in feeding tactics. The length of the intestine is significantly longer in Bryconamericus sp. 1. This particularity and the low overlap values (< 0.60) suggest that interspecific differences in feeding habits play an important role, allowing species coexistence |
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Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534Partição de recursos alimentares entre duas espécies de Bryconamericus Eingenmann, 1970 da bacia do rio Iguaçu, Brasil- DOI: 10.4025/actascibiolsci.v26i4.1534partição de recursosdietamorfologia tróficaBryconamericusneotropical2.01.00.00-0 Biologia GeralDiets of two species of Bryconamericus Eigenmann, 1907 called Bryconamericus sp. 1 and Bryconamericus sp. 2, were compared. Collections were made monthly, from March 1997 to February 1998, on the Iguaçu River, State of Paraná. Both species are insectivores, but Bryconamericus sp. 1 feed predominantly on larvae of aquatic insects and Bryconamericus sp. 2 feed on terrestrial insects. In Bryconamericus sp. 1, the mouth is sub-inferior with slightly thick upper lip, while in Bryconamericus sp. 2 the mouth is anterior with reduced lip; teeth are different in both species, confirming differences in feeding tactics. The length of the intestine is significantly longer in Bryconamericus sp. 1. This particularity and the low overlap values (< 0.60) suggest that interspecific differences in feeding habits play an important role, allowing species coexistenceAs dietas de duas espécies de Bryconamericus Eigenmann, 1907 denominadas Bryconamericus sp. 1 e Bryconamericus sp. 2 foram comparadas. As coletas foram realizadas mensalmente, no período de março/97 a fevereiro/98, no rio Iguaçu, Paraná. Ambas são insetívoras, porém a primeira se alimenta predominantemente de larvas de insetos aquáticos e a segunda de insetos terrestres. Em Bryconamericus sp. 1 a boca é sub-terminal e o lábio superior é levemente mais espesso, enquanto em Bryconamericus sp. 2 a boca é terminal e os lábios são delgados. Além disso, a disposição dos dentes é desigual nas duas espécies, confirmando as diferenças encontradas em suas táticas alimentares. O comprimento do intestino é significativamente maior em Bryconamericus sp. 1. Estas particularidades, associadas aos baixos valores na sobreposição alimentar (< 0.60), sugerem que diferenças interespecíficas na dieta desempenham um papel importante, permitindo a coexistência das duas espéciesUniversidade Estadual De Maringá2008-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/153410.4025/actascibiolsci.v26i4.1534Acta Scientiarum. Biological Sciences; Vol 26 No 4 (2004); 431-436Acta Scientiarum. Biological Sciences; v. 26 n. 4 (2004); 431-4361807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1534/951Russo, Márcia ReginaHahn, Norma SegattiPavanelli, Carla Simoneinfo:eu-repo/semantics/openAccess2022-11-23T17:33:12Zoai:periodicos.uem.br/ojs:article/1534Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:12Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 Partição de recursos alimentares entre duas espécies de Bryconamericus Eingenmann, 1970 da bacia do rio Iguaçu, Brasil- DOI: 10.4025/actascibiolsci.v26i4.1534 |
title |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
spellingShingle |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 Russo, Márcia Regina partição de recursos dieta morfologia trófica Bryconamericus neotropical 2.01.00.00-0 Biologia Geral |
title_short |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
title_full |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
title_fullStr |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
title_full_unstemmed |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
title_sort |
Resource partitioning between two species of Bryconamericus Eigenmann, 1907 from the Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v26i4.1534 |
author |
Russo, Márcia Regina |
author_facet |
Russo, Márcia Regina Hahn, Norma Segatti Pavanelli, Carla Simone |
author_role |
author |
author2 |
Hahn, Norma Segatti Pavanelli, Carla Simone |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Russo, Márcia Regina Hahn, Norma Segatti Pavanelli, Carla Simone |
dc.subject.por.fl_str_mv |
partição de recursos dieta morfologia trófica Bryconamericus neotropical 2.01.00.00-0 Biologia Geral |
topic |
partição de recursos dieta morfologia trófica Bryconamericus neotropical 2.01.00.00-0 Biologia Geral |
description |
Diets of two species of Bryconamericus Eigenmann, 1907 called Bryconamericus sp. 1 and Bryconamericus sp. 2, were compared. Collections were made monthly, from March 1997 to February 1998, on the Iguaçu River, State of Paraná. Both species are insectivores, but Bryconamericus sp. 1 feed predominantly on larvae of aquatic insects and Bryconamericus sp. 2 feed on terrestrial insects. In Bryconamericus sp. 1, the mouth is sub-inferior with slightly thick upper lip, while in Bryconamericus sp. 2 the mouth is anterior with reduced lip; teeth are different in both species, confirming differences in feeding tactics. The length of the intestine is significantly longer in Bryconamericus sp. 1. This particularity and the low overlap values (< 0.60) suggest that interspecific differences in feeding habits play an important role, allowing species coexistence |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03-31 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1534 10.4025/actascibiolsci.v26i4.1534 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1534 |
identifier_str_mv |
10.4025/actascibiolsci.v26i4.1534 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1534/951 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 26 No 4 (2004); 431-436 Acta Scientiarum. Biological Sciences; v. 26 n. 4 (2004); 431-436 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
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1799317392456679424 |