A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002 |
Resumo: | The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and upstream of this critical section. Individuals of both species released downstream of the CABV took much more time to reach the upper end of the system (43.6 days vs. 15.9 days), and passed in much lower proportions (18% vs. 60.8%) than those tagged upstream of this component. Although more work is needed to differentiate between fishway effects and natural variation in migratory motivation, the results clearly demonstrate passage problems at the CABV. |
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Neotropical ichthyology (Online) |
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A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basinFish migrationNature-likeNeotropical fishesPIT-tagTelemetryThe majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and upstream of this critical section. Individuals of both species released downstream of the CABV took much more time to reach the upper end of the system (43.6 days vs. 15.9 days), and passed in much lower proportions (18% vs. 60.8%) than those tagged upstream of this component. Although more work is needed to differentiate between fishway effects and natural variation in migratory motivation, the results clearly demonstrate passage problems at the CABV.Sociedade Brasileira de Ictiologia2012-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002Neotropical Ichthyology v.10 n.4 2012reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/S1679-62252012000400002info:eu-repo/semantics/openAccessFontes Júnior,Hélio MartinsCastro-Santos,TheodoreMakrakis,SergioGomes,Luiz CarlosLatini,João Dirçoeng2012-10-31T00:00:00Zoai:scielo:S1679-62252012000400002Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2012-10-31T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
title |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
spellingShingle |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin Fontes Júnior,Hélio Martins Fish migration Nature-like Neotropical fishes PIT-tag Telemetry |
title_short |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
title_full |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
title_fullStr |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
title_full_unstemmed |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
title_sort |
A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin |
author |
Fontes Júnior,Hélio Martins |
author_facet |
Fontes Júnior,Hélio Martins Castro-Santos,Theodore Makrakis,Sergio Gomes,Luiz Carlos Latini,João Dirço |
author_role |
author |
author2 |
Castro-Santos,Theodore Makrakis,Sergio Gomes,Luiz Carlos Latini,João Dirço |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Fontes Júnior,Hélio Martins Castro-Santos,Theodore Makrakis,Sergio Gomes,Luiz Carlos Latini,João Dirço |
dc.subject.por.fl_str_mv |
Fish migration Nature-like Neotropical fishes PIT-tag Telemetry |
topic |
Fish migration Nature-like Neotropical fishes PIT-tag Telemetry |
description |
The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and upstream of this critical section. Individuals of both species released downstream of the CABV took much more time to reach the upper end of the system (43.6 days vs. 15.9 days), and passed in much lower proportions (18% vs. 60.8%) than those tagged upstream of this component. Although more work is needed to differentiate between fishway effects and natural variation in migratory motivation, the results clearly demonstrate passage problems at the CABV. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1679-62252012000400002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.10 n.4 2012 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122180440686592 |