Results 61 to 70 of about 1,227 (168)

Diet of Black-crowned Night-herons (Nycticorax nycticorax) in a wetland of the Paraná River´s alluvial valley [PDF]

open access: yes, 2013
We analysed the feeding ecology of Nycticorax nycticorax based on fourty individuals captured on the Carabajal İsland (Santa Fe, 31º39?S, 60º42?W), determining the minimum sample, index of relative importance (IRI), size of prey, feeding efficiency ...
Beltzer, Adolfo Hector   +3 more
core   +1 more source

Lista de los peces de la provincia de Santiago del Estero [PDF]

open access: yes, 2014
Fil: Fernández, Luis A.. Fundación Miguel Lillo. Tucumán; ArgentinaFil: Nadalin, Diego Oscar. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: López, Hugo Luis.
Andreoli Bize, Julieta   +3 more
core   +3 more sources

New records of helminth parasites in two species of river fish, province of Salta, Argentina [PDF]

open access: yes, 2014
En ríos y otros cursos de agua de la provincia de Salta se capturaron ejemplares de Trichomycterus spegazzini (Berg, 1897) y Jenynsia alternimaculata (Fowler, 1916); ambos resultaron parasitados por los nematodes Contracaecum sp. y Cucullanus (Cucullanus)
Ailan Choke, Lorena Gisela   +3 more
core  

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

open access: yesBoletim 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   +5 more
doaj  

Tolerance of piava juveniles to different ammonia concentrations

open access: yesSemina: 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   +4 more
doaj   +1 more source

Substituição do farelo de soja pelo farelo de linhaça em dietas para a piava (Leporinus obtusidens)

open access: yesSemina: Ciências Agrárias, 2013
The aim of this study was evaluate the replacement of soybean meal by linseed meal on growth of piava juveniles. The experiment was carried on fish farming laboratory of UFSM/CESNORS, on March to April, 2011. They were used 360 fish, (initial weight = 9.0 ± 2.5 g), which placed in a water re-use system composed by 15 tanks (250L), with mean temperature
Dirleise Pianesso   +6 more
openaire   +2 more sources

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

open access: yesBrazilian 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   +3 more
doaj   +1 more source

Impact of Brazilian fish species at early developmental stages on plankton communities and water chemical parameters

open access: yesActa Scientiarum: Biological Sciences, 2016
  Effect of larvae of Astyanax altiparanae (AA), Piaractus mesopotamicus (PM), Leporinus obtusidens (LO) and Prochilodus lineatus (PL) on plankton communities and water quality were evaluated.
Claudemir Martins Soares   +3 more
doaj   +1 more source

Interspecific Differentiation in Heavy Metals Concentration in Fishes of the Apa River, Upper Paraguay River Basin

open access: yesOrbital: The Electronic Journal of Chemistry, 2018
Heavy metals concentration in fishes are important indicator geomorphological or environmental integrity in aquatic habitats. Aiming to evaluate metal concentration in fish muscles in Apa River, upper Paraguay basin, we analyzed 124 individuals of eight ...
Yzel Rondon Súarez   +2 more
doaj   +3 more sources

Bibliografía de los peces de agua dulce de la Argentina Suplemento 1996-2002. [PDF]

open access: yes, 2003
Between 1981 and 1995, we published five bibliographic lists (López et al., 1981, 1982,1987, 1989 y 1995) that included the publications referred to Argentine freshwater fishes and related general information published since Ringuelet et al. (1967).
Battistoni, Patria A.   +3 more
core  

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