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Provedor de dados:  Neotropical Ichthyology
País:  Brazil
Título:  Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent
Autores:  Wagner,Ricardo Luiz
Makrakis,Sergio
Castro-Santos,Theodore
Makrakis,Maristela Cavicchioli
Dias,João Henrique Pinheiro
Belmont,René Fuster
Data:  2012-10-01
Ano:  2012
Palavras-chave:  Attraction
Dams
Fish ladder
Fishway
Migration
Swimming performance
Resumo:  This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil. The evaluation was designed to quantify entry and passage proportions of 4 long-distance migratory fish species: Brycon orbignyanus (piracanjuba), Piaractus mesopotamicus (pacu), Prochilodus lineatus (curimba), and Rhinelepis aspera (cascudo-preto). Proportions finding and entering the fishway differed between species, ranged from 7.4 % (Prochilodus lineatus) to 55.4% (Piaractus mesopotamicus). Also, proportion passing was different between species, ranged from 31% (R. aspera) to 100% (Prochilodus lineatus). Fish that were marked and released within the fishway had greater failure rates than those that entered volitionally. Total time to pass ranged from 1.48 hours (Prochilodus lineatus) to 178.9 hours (R. aspera). Failure rates were greatest in the lower end of the fishway. Although some individuals of all species passed successfully, significant challenges remain to restoring connectivity of the upper Paraná River.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400011
Editor:  Sociedade Brasileira de Ictiologia
Relação:  10.1590/S1679-62252012000400011
Formato:  text/html
Fonte:  Neotropical Ichthyology v.10 n.4 2012
Direitos:  info:eu-repo/semantics/openAccess
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