Results 51 to 60 of about 1,942 (155)

The influence of dam construction on a population of Leporinus obtusidens (Valenciennes, 1847) (Pisces, Anostomidae) in the Yacyretá Reservoir (Argentina)

Fisheries Research, 2005
Abstract A field study of age, growth and mortality of the “boga”, Leporinus obtusidens (Valenciennes, 1847) was carried out in the Yacyreta Reservoir, High Parana River, Argentina. We compared age-structure, length–weight relationships and condition factor coefficients in phases previous (1990–1994) and subsequent (1995–1998) to the reservoir ...
Araya, Patricia R., Agostinho, Angelo A., Bechara, Jose Alfredo   +2 more
openaire   +2 more sources

Diel variation in the ascent of fishes up an experimental fish ladder at Itaipu Reservoir: fish size, reproductive stage and taxonomic group influences

Neotropical Ichthyology
In this study, we evaluated the fish ascent in the experimental ladder at Itaipu Reservoir (Paraná State, Brazil), in relation to diel variation, fish size, reproductive stages and species composition.
Domingo Rodriguez Fernandez, Angelo Antonio Agostinho, Luis Mauricio Bini, Fernando Mayer Pelicice   +3 more
doaj   +1 more source

NUEVOS DATOS ACERCA DE TEREANCISTRUM PARVUS KRITSKY ET AL. Y T. PARANAENSIS KARLING ET AL. (MONOGENEA: DACTYLOGYRIDAE) DE LEPORINUS OBTUSIDENS VALENCIENNES (CHARACIFORMES: ANOSTOMIDAE) DEL LAGO GUAÍBA, REGIÓN SUR DE BRASIL [PDF]

, 2015
Terencistrum parvus Kritsky, Thatcher & Kayton, 1980 e T. paranaensis Karling, Lopes, Takemoto & Pavanelli, 2014, são registrados pela primeira vez em brânquias de Leporinus obtusidens Valenciennes, 1837 do Lago Guaíba, Rio Grande do Sul, região ...
Moraes Monteiro, Cassandra, Wendt, Emília Welter, B. Amato, Suzana   +2 more
core   +3 more sources

Rendimento de filé e de carcaça e composição quí­­mica do filé de piava de piscicultura e do ambiente natural

Boletim do Instituto de Pesca, 2018
A piava (Leporinus obtusidens) é um dos principais peixes nativos cultivados e um dos mais capturados no Rio Grande do Sul. Objetivou-se, com esse trabalho, comparar o rendimento de carcaça e filé de piavas, fêmeas e machos, capturadas em ambiente ...
Andressa Mariza Ribeiro GERALDO, Larissa da CUNHA, Márcio Aquio HOSHIBA, Matheus dos Santos CARDOSO, Vagner Callai da SILVA, Alessandra Sayuri Kikuchi TAMAJUSUKU   +5 more
doaj  

Tolerance of piava juveniles to different ammonia concentrations

Semina: Ciências Agrárias, 2015
The objective of this study was to evaluate the tolerance of piavas (Leporinus obtusidens) to ammonia (NH3) by measuring its effects on plasma ion levels and tissue metabolic parameters.
Carlos Eduardo Copatti, Keide Carolina dos Santos Bolner, Felipe Link de Rosso, Vania Lucia Loro, Bernardo Baldisserotto   +4 more
doaj   +1 more source

Three invasive species occurring in the diets of fishes in a Neotropical floodplain

Brazilian Journal of Biology
The composition of the diets of 66 species of fishes was investigated from September 2009 to June 2010 in three subsystems of the Upper Paraná River floodplain (Brazil), following invasion by the two mollusk species Limnoperna fortunei (Dunker, 1857) and
A Isaac, A Fernandes, MJM Ganassin, NS Hahn   +3 more
doaj   +1 more source

Commercial formulation containing quinclorac and metsulfuron-methyl herbicides inhibit acetylcholinesterase and induce biochemical alterations in tissues of Leporinus obtusidens

Ecotoxicology and Environmental Safety, 2011
The effects of commercial formulation containing quinclorac and metsulfuron-methyl herbicides on acetylcholinesterase (AChE), antioxidant profile and metabolic parameters in teleost fish (Leporinus obtusidens) were studied. The fish were exposed during 90 days to commercial formulation containing quinclorac (204 μg L(-1)) and metsulfuron-methyl (5.8 μg
Alexandra, Pretto, Vania Lucia, Loro, Charlene, Menezes, Bibiana Silveira, Moraes, Geovane Boschmann, Reimche, Renato, Zanella, Luis Antonio, de Ávila   +6 more
openaire   +2 more sources

The influence of dam construction on a population of Leporinus obtusidens (Valenciennes, 1847) (Pisces, Anostomidae) in the Yacyretá Reservoir (Argentina) [PDF]

, 2018
ARAYA, Patricia R.; AGOSTINHO, Angelo Antonio; BECHARA, José A. The influence of dam construction on a population of Leporinus obtusidens (Valenciennes, 1847) (Pisces, Anostomidae) in the Yacyretá Reservoir (Argentina).
ARAYA, P.R.; AGOSTINHO, A.A.; BECHARA, J.A.
core   +1 more source