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Provedor de dados:  BABT
País:  Brazil
Título:  Selection of an experimental fish ladder located at the dam of the Itaipu Binacional, Paraná River, Brazil
Autores:  Fernandez,Domingo Rodriguez
Agostinho,Angelo Antônio
Bini,Luis Mauricio
Data:  2004-08-01
Ano:  2004
Palavras-chave:  Fish ladder
Fish migration
Fish transposition
Resumo:  The specific selection of a weir and orifice type experimental fish ladder in the dam of the Itaipu Reservoir (Paraná River) was evaluated by samplings in the river downstream and at two points along the ladder (at heights of 10 m and 27 m) during 28 months. Among the 65 species recorded in the river (immediate downstream of the dam), 27 were captured on the ladder. The species that showed highest density on the ladder, the majority migratory, were moderately, or only slightly, abundant downstream. Among the most abundant species downstream, only one, non-migratory, was recorded in the ladder. The structure presented a negative selection in relation to large migratory pimelodids that might be overcome by enlarging the scale of its design. The sampling demonstrated a moderate selection of species along the ladder and its hydraulic model proved satisfactory regarding the attraction and efficient ascent of the fishes.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Instituto de Tecnologia do Paraná - Tecpar
Relação:  10.1590/S1516-89132004000400012
Formato:  text/html
Fonte:  Brazilian Archives of Biology and Technology v.47 n.4 2004
Direitos:  info:eu-repo/semantics/openAccess

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