Results 61 to 70 of about 10,475 (247)

Características hematológicas de teleósteos brasileiros. I. Série vermelha e dosagens de cortisol e glicose do plasma sangüíneo de espécimes de Colossoma macropomum em condições de cultivo - DOI: 10.4025/actascibiolsci.v20i0.4466

Acta Scientiarum: Biological Sciences, 2008
Foram utilizados no presente trabalho 30 exemplares sexualmente imaturos de Colossoma macropomum Cuvier, 1818 (Osteichthyes: Characidae) com 500 a 700g de peso total e 25,0 a 30,2cm de comprimento padrão, com aproximadamente um ano de idade.
Marcos Tavares-Dias, Elziane F. Silva Sandrim   +1 more
doaj   +1 more source

Toxicity and effects of copper sulfate on parasitic control and hematological response of tambaqui Colossoma macropomum. [PDF]

, 2012
The purpose of this work was to determine the mean lethal concentration (LC50-96h) of copper sulfate (CuSO4) for juveniles Colossoma macropomum (Characidae), to evaluate the effectiveness of different concentrations of CuSO4 on elimination of parasites ...
AFFONSO, E. G., FERREIRA, J. S., MARTINS, M. L., ONO, E. A., TAVARES-DIAS, M.   +4 more
core  

Dietary Phosphorus Requirement for Tambaqui, Colossoma macropomum, in the Grow‐Out Phase

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Phosphorus is essential for fish growth as it is crucial in skeletal development and metabolic reactions. The dietary requirement for this mineral varies among fish species and growth stages. Therefore, the objective of this study was to determine the available phosphorus (AP) requirement for tambaqui during the grow‐out phase (± 400 to 1000 g)
Ludmila L. C. Menezes, Vânia M. Machado, Cristielle N. Souto, Danilo C. Proença, Guilherme W. Bueno, Igo G. Guimarães   +5 more
wiley   +1 more source

Efeito de banhos terapêuticos com formalina sobre indicadores de estresse em tambaqui. [PDF]

, 2019
O objetivo deste trabalho foi avaliar o efeito de concentrações terapêuticas de formalina na homeostase de tambaqui (Colossoma macropomum Cuvier 1818) por meio de índices ...
ARAÚJO, L. D. de, BRANDÃO, F. R., CHAGAS, E. C., GOMES, L. de C.   +3 more
core  

Seasonal Forest Resources Support Fish Biomass in Floodplain Lakes of an Amazonian Tributary

Freshwater Biology, Volume 70, Issue 11, November 2025.
ABSTRACT The Flood Pulse Concept is a foundational ecological theory that emphasizes the critical role of lateral connectivity between a river channel and its floodplain. Many tropical rivers inundate the surrounding floodplain in the flood stage, thereby receiving large amounts of terrestrial organic matter that can be decomposed by microbes and ...
Timothy D. Jardine, Francisco Villamarín, Joseph E. Hawes, Joao Campos‐Silva, Cristina M. Jacobi, Stephen Srayko, Alexander Pelletier, William E. Magnusson   +7 more
wiley   +1 more source

Lasso Model for Morphological Covariation Patterns between Colossoma macropomum and Piaractus orinoquensis × Colossoma macropomum Hybrid [PDF]

Journal Of Biochemical Technology, 2021
Henry Díaz Merino, Dora Calvo Gastañaduy, Carola Calvo Gastañaduy, Ricardo Shimabuku Ysa, César Osorio Carrera, Teresita del Rosario Merino Salazar, Danny Villegas Rivas, Manuel Emilio Milla Pino, Nancy Carruitero Avila, River Chávez Santos, Juan De La Cruz Lozado, Lillet Villavicencio Palacios   +11 more
openaire   +1 more source

Weight‐Length Ratio of Piranhas Serrasalmus (Characiformes, Serrasalmidae) in Bolivia: Relationships to Molecular Divergence and Maximum Size?

Ecology and Evolution, Volume 15, Issue 10, October 2025.
This study presents WLRs of nine piranha or palometa fish species of genus Serrasalmus present in the Amazon and La Plata basins of Bolivia and compares differences with genetic divergence (mtDNA COI locus) and the observed maximum size. All species showed an exponential (power type) growth pattern, and all WLRs were significantly different among all ...
Fernando M. Carvajal‐Vallejos, Flavio Gallo‐Cardozo, Matías Careaga, Melina Campero   +3 more
wiley   +1 more source

Análise qualitativa da comunidade fitoplanctônica de uma piscicultura em Alvorada d´Oeste, Rondônia, Brasil

Acta Agronómica, 2015
A piscicultura é um dos segmentos da produção animal que mais cresce no cenário mundial. O levantamento da comunidade fitoplanctônica nestes ambientes permite estabelecer formas de manejo mais eficientes. Objetivou-se com esta pesquisa realizar a análise
Rafaela Lemes da Costa, Fabiano Moreira Figueiredo, Márcia Bay, Cláudio Brandão de Queiroz, Fernanda Bay-Hurtado   +4 more
doaj   +1 more source

Equipamentos alternativos na obtenção de farinha de resíduos de tambaqui (Colossoma macropomum). [PDF]

, 2014
O tambaqui (Colossoma macropomum) é o segundo maior peixe de escama da América, superado apenas pelo pirarucu. Nativo da bacia Amazônica, atualmente vem ganhando destaque na aquicultura familiar da Região Norte, como no Estado do Pará, onde seu consumo ...
ABREU, L. F., RIBEIRO, I. A., RIBEIRO, S. C. A.   +2 more
core  

Breaking down silos: Conservation areas for Amazonian flagship terrestrial and freshwater species

Conservation Science and Practice, Volume 7, Issue 9, September 2025.
This study shows that 17% of the Amazon River Basin is covered by areas of high jaguar density and freshwater migratory species richness, 83% of which are found in Brazil and Peru. A third of these areas are located outside of formal protected areas or Indigenous territories.
Natalie Shahbol, Melissa Arias, Valeria Boron, Helga Correa Wiederhecker, Bernardo Caldas De Oliveira, Fabiola La Rosa, Robin Naidoo, Marcelo Oliveira‐Da‐Costa, Jessica Pacheco, Mariana Paschoalini Frias, Sandra Petrone, Lila Sainz, David Tickner, Fernando Trujillo, José Saulo Usma Oviedo, Paul Andre Van Damme, Michele Thieme   +16 more
wiley   +1 more source