Results 51 to 60 of about 5,015 (244)

Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon

Journal of Fish Biology, EarlyView.
Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Evidence of polygamy in the socially monogamous Amazonian fish Arapaima gigas (Schinz, 1822) (Osteoglossiformes, Arapaimidae)

Neotropical Ichthyology
Arapaima gigas is one of the largest freshwater fishes of the world. It is socially monogamous, forming pairs, constructing a nest and providing parental care.
Izeni Pires Farias, Adam Leão, Yane Santos Almeida, Júlia Tovar Verba, Marcelo Crossa M., Alexandre Honczaryk, Tomas Hrbek   +6 more
doaj   +1 more source

Tissue alterations in the pirarucu, Arapaima gigas, infected by Goezia spinulosa (Nematoda) Alterações teciduais em pirarucu, Arapaima gigas, infectado por Goezia spinulosa (Nematoda)

Revista Brasileira de Parasitologia Veterinária, 2011
Five specimens of Arapaima gigas caught in the Araguaia River (State of Mato Grosso, Brazil) were investigated for helminths in 2004. Numerous adult specimens of the rhapidascarid nematode Goezia spinulosa were found in stomach ulcers in all the ...
Rodrigo Caldas Menezes, Sonia Maria Cursino dos Santos, Paulo Sérgio Ceccarelli, Luiz Eduardo Roland Tavares, Rogério Tortelly, José Luis Luque   +5 more
doaj   +1 more source

Parasitic infections in pirarucu fry, Arapaima gigas Schinz, 1822 (Arapaimatidae) kept in a semi-intensive fish farm in Central Amazon, Brazil. [PDF]

, 2014
Studies regarding parasite fauna in farmed fish are of great relevance to lhe knowledge of the parasites species. allowing interference in their proliferation in order to avoid epizooties and consequently.
ANDRADE, S. M. S., ARAÚJO, C. S. O., BARBOSA, M., BELEM-COSTA, A., BORGES, J. T., GOMES, A. L., QUEIROZ, M. N., TAVARES-DIAS, M.   +7 more
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Community-based population recovery of overexploited Amazonian wildlife [PDF]

, 2017
The Amazon Basin experienced a pervasive process of resource overexploitation during the 20th-century, which induced severe population declines of many iconic vertebrate species.
Antunes, André P., Campos-Silva, João Vitor, Peres, Carlos A., Pezzuti, Juarez, Valsecchi, João   +4 more
core   +1 more source

Assessing the population structure of Plagioscion squamosissimus (Teleostei, Perciformes, Sciaenidae) from the São Francisco River, Bahia, Brazil, using body morphology and otolith shape signatures

Journal of Fish Biology, EarlyView.
Abstract The south American silver croaker, Plagioscion squamosissimus, holds significant importance for the artisanal fisheries in the sub‐middle and lower courses of the São Francisco River, located in northeastern Brazil. To investigate the population structure of this species along its longitudinal profile, a total of 150 individuals (50 fish per ...
F. L. Freitas, N. S. Pereira, P. B. Pinheiro, R. Schroeder, A. T. Correia   +4 more
wiley   +1 more source

Production of arapaima protein hydrolysate using Aspergillus flavo-furcatis protease and pancreatin

Pesquisa Agropecuária Tropical, 2015
The processing of arapaima (Arapaima gigas) generates a lot of residues that can be used for the development of new products of industrial interest.
Flávia de Carvalho Paiva, Mircella Marialva Alecrim, Maria Francisca Simas Teixeira, Larissa de Souza Kirsch, Rogério Souza de Jesus   +4 more
doaj   +1 more source

Relação peso-comprimento e fator de condição relativo (Kn) do pirarucu Arapaima gigas Schinz, 1822 (Arapaimidae) em cultivo semi-intensivo no estado do Amazonas, Brasil. [PDF]

, 2017
O pirarucu Arapaima gigas (Osteoglossiformes, Arapaimidae), peixe da bacia amazônica, apresenta alta taxa de crescimento e tolerância a alta densidade de estocagem, tem rusticidade ao manuseio e aceita alimentação artificial quando treinado no início da ...
ANDRADE, S. M. S., ARAÚJO, C. S. O., DIAS, M. T., GOMES, A. L. S.   +3 more
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Sustainable Bioplastics From Land and Sea Waste: Structure, Thermal Stability, and Mechanical Behavior Under Accelerated Weathering

Journal of Applied Polymer Science, Volume 143, Issue 6, February 10, 2026.
Schematic representation of the fabrication of sustainable bioplastics derived from fish scales (FS) and orange peels (OP), modified with EDC/NHS and PCL. The films were subjected to accelerated weathering to evaluate changes in structural integrity, thermal stability, and mechanical behavior.
Israel Núñez‐Tapia, Rafael G. Suarez, María Cristina Piña Barba   +2 more
wiley   +1 more source

Efeito da densidade de estocagem na homogeneidade do crescimento de juvenis de pirarucu em ambiente confinado. [PDF]

, 2019
O objetivo deste trabalho foi avaliar o efeito da densidade de estocagem sobre a homogeneidade do crescimento de juvenis de pirarucu (Arapaima gigas) em tanques-rede de pequeno volume.
CAVERO, B. A. S., CRESCENCIO, R., GANDRA, A. L., ITUASSÚ, D. R., PEREIRA-FILHO, M., ROUBACH, R.   +5 more
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