Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Neotropical Ichthyology (3) Autor Castro-Santos,Theodore (3) Makrakis,Sergio (3) Makrakis,Maristela Cavicchioli (2) Wagner,Ricardo Luiz (2) Adames,Maurício Spagnolo (1) Belmont,René Fuster (1) Dias,João Henrique Pinheiro (1) Fontes Júnior,Hélio Martins (1) Gomes,Luiz Carlos (1) Latini,João Dirço (1) Mais... Palavra-chave Attraction (1) Barriers (1) Criteria for culverts (1) Dams (1) Fish ladder (1) Fish migration (1) Fishway (1) Migration (1) Nature-like (1) Neotropical fishes (1) PIT-tag (1) Road crossing (1) Stream (1) Swimming performance (1) Telemetry (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2012 (3) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin Neotropical Ichthyology Fontes Júnior,Hélio Martins; Castro-Santos,Theodore; Makrakis,Sergio; Gomes,Luiz Carlos; Latini,João Dirço. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish migration; Nature-like; Neotropical fishes; PIT-tag; Telemetry. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002 Culverts in paved roads as suitable passages for Neotropical fish species Neotropical Ichthyology Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Wagner,Ricardo Luiz; Adames,Maurício Spagnolo. Improperly installed or poorly maintained culverts can pose a serious threat to fish by disrupting their habitat and endangering spawning success. Road culverts that are not designed for fish passage frequently can become obstacles. This can be especially problematic for migratory species, but can lead to fragmentation of resident populations as well. This study evaluated 40 culverts of 29 sites within a 25-km radius from Toledo city, Paraná State, southern Brazil, with respect to their likely effects on movement of the local ichthyofauna. We collected data on the shape and length of culverts, culvert material, waterfall height, water column depth, slope, and estimated flow velocity. Culverts were categorized by level of barrier risk for upstream... Tipo: Info:eu-repo/semantics/article Palavras-chave: Barriers; Criteria for culverts; Road crossing; Stream. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400009 Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent Neotropical Ichthyology Wagner,Ricardo Luiz; Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Dias,João Henrique Pinheiro; Belmont,René Fuster. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Attraction; Dams; Fish ladder; Fishway; Migration; Swimming performance. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400011 Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco