Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/39473 |
Resumo: | This work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine. Four species from the São Francisco river basin were tested: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti and Prochilodus costatus. For all of them mortality rates due to decompression were extremely low. However, the symptoms related to decompression, such as bulged eyes and hemorrhage, were not observed only in Hypostomus sp., and were more frequent the larger the pressure values were, considering the values from which decompression was performed. All these symptoms decreased significantly after 24 h of observation. With the increase in pressure inside the apparatus, the four tested species moved towards the upper levels. This behavior could make possoble the implementation of bypass downstream fish passages in dams constructed in Brazil. |
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Evaluation of the effects of pressure gradients on four Brazilian freshwater fish speciesDownstream fish passageDamsExperimental apparatusFish mortalityPressure effects on fishThis work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine. Four species from the São Francisco river basin were tested: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti and Prochilodus costatus. For all of them mortality rates due to decompression were extremely low. However, the symptoms related to decompression, such as bulged eyes and hemorrhage, were not observed only in Hypostomus sp., and were more frequent the larger the pressure values were, considering the values from which decompression was performed. All these symptoms decreased significantly after 24 h of observation. With the increase in pressure inside the apparatus, the four tested species moved towards the upper levels. This behavior could make possoble the implementation of bypass downstream fish passages in dams constructed in Brazil.Este trabalho teve como objetivo avaliar experimentalmente o comportamento de espécies brasileiras quando submetidas a um aumento gradual na pressão, bem como os efeitos de uma descompressão rápida simulando a passagem por uma turbina hidrelétrica. Quatro espécies da bacia do rio São Francisco foram testadas: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti e Prochilodus costatus. Para todas elas as taxas de mortalidade devido à descompressão foram extremamente baixas. No entanto, sintomas relacionados à descompressão, como exoftalmia e hemorragia só não foram observados em Hypostomus sp., sendo mais freqüentes quanto maior o valor de pressão a partir do qual realizou-se a descompressão. Todos estes sintomas diminuíram significativamente após 24 horas de observação. Com o aumento da pressão no aparato, as espécies testadas se movimentaram em direção aos níveis superiores. Este comportamento sugere a possibilidade de se utilizar passagens de peixes para jusante do tipo bypass em barragens a serem implantadas no Brasil.Instituto de Tecnologia do Paraná (Tecpar)2020-03-27T13:18:39Z2020-03-27T13:18:39Z2009-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPOMPEU, P. dos S.; HORTA, L. F. M.; MARTINEZ, C. B. Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species. Brazilian Archives of Biology and Technology, Curitiba, v. 52, n. 1, p. , Jan./Feb. 2009. DOI: 10.1590/S1516-89132009000100015.http://repositorio.ufla.br/jspui/handle/1/39473Brazilian Archives of Biology and Technology (BABT)reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessPompeu, Paulo dos SantosHorta, Luiz Felipe MascarenhasMartinez, Carlos Barreiraeng2023-05-30T16:54:16Zoai:localhost:1/39473Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-30T16:54:16Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
title |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
spellingShingle |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species Pompeu, Paulo dos Santos Downstream fish passage Dams Experimental apparatus Fish mortality Pressure effects on fish |
title_short |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
title_full |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
title_fullStr |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
title_full_unstemmed |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
title_sort |
Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species |
author |
Pompeu, Paulo dos Santos |
author_facet |
Pompeu, Paulo dos Santos Horta, Luiz Felipe Mascarenhas Martinez, Carlos Barreira |
author_role |
author |
author2 |
Horta, Luiz Felipe Mascarenhas Martinez, Carlos Barreira |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Pompeu, Paulo dos Santos Horta, Luiz Felipe Mascarenhas Martinez, Carlos Barreira |
dc.subject.por.fl_str_mv |
Downstream fish passage Dams Experimental apparatus Fish mortality Pressure effects on fish |
topic |
Downstream fish passage Dams Experimental apparatus Fish mortality Pressure effects on fish |
description |
This work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine. Four species from the São Francisco river basin were tested: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti and Prochilodus costatus. For all of them mortality rates due to decompression were extremely low. However, the symptoms related to decompression, such as bulged eyes and hemorrhage, were not observed only in Hypostomus sp., and were more frequent the larger the pressure values were, considering the values from which decompression was performed. All these symptoms decreased significantly after 24 h of observation. With the increase in pressure inside the apparatus, the four tested species moved towards the upper levels. This behavior could make possoble the implementation of bypass downstream fish passages in dams constructed in Brazil. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-02 2020-03-27T13:18:39Z 2020-03-27T13:18:39Z |
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 |
POMPEU, P. dos S.; HORTA, L. F. M.; MARTINEZ, C. B. Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species. Brazilian Archives of Biology and Technology, Curitiba, v. 52, n. 1, p. , Jan./Feb. 2009. DOI: 10.1590/S1516-89132009000100015. http://repositorio.ufla.br/jspui/handle/1/39473 |
identifier_str_mv |
POMPEU, P. dos S.; HORTA, L. F. M.; MARTINEZ, C. B. Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species. Brazilian Archives of Biology and Technology, Curitiba, v. 52, n. 1, p. , Jan./Feb. 2009. DOI: 10.1590/S1516-89132009000100015. |
url |
http://repositorio.ufla.br/jspui/handle/1/39473 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná (Tecpar) |
publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná (Tecpar) |
dc.source.none.fl_str_mv |
Brazilian Archives of Biology and Technology (BABT) reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1784550208994017280 |