Results 61 to 70 of about 269 (156)

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae) [PDF]

Hydrobiologia, 2006
Characterization, management and protection of biodiversity are the most prominent challenges in conservation biology. Analyses on molecular similarity (Random Amplified Polymorphic DNA-Polymerase Chain Reaction, RAPD-PCR) and morphologic patterns (morphometric and meristic characters) were performed to evaluate the existence of population structuring ...
Samuel Rezende Paiva, Jorge Abdala Dergam, Flávia Machado   +2 more
openaire   +1 more source

Metazoários parasitos de seis espécies de peixes do Reservatório de Lajes, Estado do Rio de Janeiro, Brasil Metazoan parasites of six fishes species from Lajes Reservoir in the State of Rio de Janeiro, Brazil

Revista Brasileira de Parasitologia Veterinária, 2007
Entre abril de 2002 e julho de 2003, foram necropsiados 231 espécimes de peixes: 39 Astyanax bimaculatus (Linnaeus, 1758), 79 A. fasciatus (Cuvier, 1819), 23 Hypostomus affinis (Steindachner, 1877), 26 Hoplias malabaricus (Bloch, 1794), 30 ...
Aline R. Paraguassú, José L. Luque
doaj   +1 more source

Parasites of four ornamental fish from the Chumucuí River (Bragança, Pará, Brazil) Parasitas de quatro peixes ornamentais do Rio Chumucuí (Bragança-Pará, Brasil)

Revista Brasileira de Parasitologia Veterinária, 2013
The objective of the present study was to evaluate the parasite fauna of four species of ornamental fish collected in the Chumucuí River, municipality of Bragança, Pará, Brazil. From June 2006 to December 2007.
Rodrigo Yudi Fujimoto, Zaira Monik Nunes de Barros, Adjalbas Nunes Marinho-Filho, Daniel Guerreiro Diniz, Jorge Costa Eiras   +4 more
doaj  

Desempenho do lambari-do-rabo-amarelo alimentado com rações práticas contendo diferentes níveis de proteína bruta

Agropecuária Catarinense, 2020
O trabalho teve o objetivo de verificar o desempenho do lambari-do-rabo-amarelo Astyanax bimaculatus alimentado com diferentes níveis de proteína bruta (PB) em dieta prática para a fase de engorda.
Haluko Massago, Bruno Corrêa da Silva
doaj   +1 more source

Redescription of Prosthenhystera obesa (Diesing, 1850) (Callodistomidae, Digenea) with New Host Records and Data on Morphological Variability

Memorias do Instituto Oswaldo Cruz, 1997
Prosthenhystera obesa (Diesing,1850) Travassos, 1922 from the gall bladder of Astyanax bimaculatus, Caranx gibbosus, Galeocharax humeralis, Leporinus copelandii, Pimelodus fur, Pseudopimelodus roosevelti, Salminus brevidens, Salminus maxillosus and from ...
Anna Kohn, Berenice MM Fernandes, Maria de Fatima D Baptista-Farias   +2 more
doaj   +1 more source

Inducción de micronúcleos y otras anormalidades nucleares en Astyanax gr. bimaculatus (Pisces: Characidae) expuestas a fenantreno [PDF]

Orinoquia, 2012
Título en ingles: Induction of micronuclei and other nuclear abnormalities in Astyanax gr. bimaculatus (Pisces: Characidae) exposed to phenanthreneTítulo en portugués: Indução de micronúcleos e de outras anormalidades nucleares em Astyanax gr. bimaculatus (Pisces: Characidae) expostos a fenantreno Resumen: El fenantreno es un hidrocarburo policíclico ...
Corredor-Santamaría, Wilson, Mora-Romero, Cristián C., Escobar-Buitrago, Paula S., Cruz-Casallas, Pablo E., Velasco-Santamaría, Yohana M.   +4 more
openaire   +4 more sources

Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species

Brazilian Archives of Biology and Technology, 2009
This work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine.
Paulo dos Santos Pompeu, Luiz Felipe Mascarenhas Horta, Carlos Barreira Martinez   +2 more
doaj   +1 more source

Structure of the littoral fish assemblage in an impounded tributary: the effects of macrophytes presence (subtropical region, Brazil) Estrutura da assembleia de peixes litorâneos em um tributário represado: os efeitos da presença de macrófitas (região subtropical, Brasil)

Brazilian Journal of Biology, 2012
To evaluate the effects of macrophytes presence in the structure of littoral fish assemblages in the littoral zone, monthly samples were collected from September, 2006 to August, 2007 in an impounded tributary of the Itá Reservoir, the Fragosos River ...
S. Hermes-Silva, E. Zaniboni-Filho
doaj   +1 more source

Histological alterations in liver and testis of Astyanax aff. bimaculatus caused by acute exposition to zinc [PDF]

Revista Ceres, 2015
This study investigated the effect of acute exposition to zinc (Zn) on histology of the liver and testes of yellow tail lambari (Astyanax aff. bimaculatus). The exposure consisted of six concentrations of Zn (0, 3, 5, 10, 15, and 20 mg/L) for 96 hours of exposure.
Santos*, Daiane Cristina Marques dos, Cupertino, Marli do Carmo, Matta, Sérgio Luis Pinto da, Oliveira, Juraci Alves de, Santos, Jorge Abdala Dergam dos   +4 more
openaire   +4 more sources

Feeding ecology of stream-dwelling Characidae (Osteichthyes: Characiformes) from the upper Tocantins River, Brazil

Zoologia (Curitiba), 2013
In this contribution we studied the trophic ecology of four Characidae species from the Cavalo Stream, upper Tocantins River, considering diet overlap and trophic niche breadth.
Maíra Moraes, Carla Ferreira Rezende, Rosana Mazzoni   +2 more
doaj   +1 more source