Results 61 to 70 of about 581 (166)

Reproductive aspects of the Amazon giant paiche (Arapaima gigas): a review

Fisheries and Aquatic Sciences
Paiche (Arapaima gigas), is a colossal freshwater fish native to the Amazon basin. Its geographic distribution spans various regions, including Brazil, Peru, Colombia, and Guyana, making it a significant component of the aquatic ecosystems in this area.
Marie Anne Gálvez Escudero, Anthony Jesús Mendoza De La Vega   +1 more
openaire   +2 more sources

Arapaima gigas stocks have declined drastically in the lower Tocantins River in the Amazon Microregion [PDF]

Anais da Academia Brasileira de Ciências
Arapaima gigas, an emblematic species of the Amazon region and a longstanding primary fishing resource, currently holds a “Data Deficient” status on the International Union for Conservation of Nature Red List, and is listed as an endangered species in ...
DARALYNS B. MACEDO, JEANDERSON S. VIANA, HENDRYA JULIANNY P. COELHO, CAIO VITOR C. COSTA, DÁRCIA GABRIELA B. DA COSTA, ÁDRIA D. DOS SANTOS, REGIANNE M.S. CORREA, ROMMEL THIAGO J. RAMOS, MARÍLIA DANYELLE N. RODRIGUES   +8 more
doaj   +1 more source

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

Journal of Fish Biology, Volume 108, Issue 3, Page 881-893, March 2026.
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

Anestesia do pirarucu por aspersão da benzocaína diretamente nas brânquias Anesthesia in pirarucu by benzocaine sprays in the gills

Ciência Rural, 2010
O pirarucu (Arapaima gigas) é um peixe que pode atingir mais de 2m e 100kg. No entanto, por ser um animal de grande porte, o risco de acidentes é bastante elevado durante o manejo. Logo, anestésicos são essenciais para segurança no trabalho.
Alexandre Honczaryk, Luís Antônio Kioshi Aoki Inoue   +1 more
doaj  

Yield and composition of pirarucu fillet in different weight classes - doi: 10.4025/actascianimsci.v33i1.10843

Acta Scientiarum: Animal Sciences, 2011
The fillet yield and quantity of waste generated after processing are important for planning and evaluating the growth performance of species and systems of aquaculture production in Brazil.
Fabiola Helena dos Santos Fogaça, Elenise Gonçalves de Oliveira, Samanta Eulles Quixaba Carvalho, José Francisco de Seixas Santos   +3 more
doaj   +1 more source

Duas novas espécies de Caballerotrema (Trematoda: Echinostomatidae) do pirarucu e do aruanã (Osteoglossidae), com uma redefinição do gênero e uma redescriçào de C. brasiliense Prudhoe, 1960. [PDF]

Acta Amazonica, 1980
Resumo O gênero Caballerotrema Prudhoe, 1960, é redefinido e C. brasiliense Prudhoe, 1960, do pirarucu, Arapaima gigas (Cuvier) é redescrito. Também são descritas C. arapaimense, n. sp. do pirarucu, e C. aruanense, n.
Vernon E. Thatcher
doaj   +1 more source

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

Genetic Diversity, Population Structure and Differentiation of Farmed and Wild African Catfish (Clarias gariepinus) in Nigeria

Evolutionary Applications, Volume 19, Issue 2, February 2026.
ABSTRACT The African catfish (Clarias gariepinus) is a commercially important species, for both fisheries and aquaculture, and is now the most commonly farmed fish in sub‐Saharan Africa. However, knowledge about the genetic diversity and population structure of natural and farmed populations, which is crucial for effective conservation and sustainable ...
Mark K. Sanda, Neil B. Metcalfe, Maria Capstick, Jenna Nichols, Barbara K. Mable   +4 more
wiley   +1 more source

Helmintos parasitos do pirarucu, Arapaima gigas (Schinz, 1822) (Osteoglossiformes: Arapaimidae), no rio Araguaia, estado de Mato Grosso, Brasil Helminth parasites of pirarucu, Arapaima gigas (Schinz, 1822) (Osteoglossiformes: Arapaimidae) from Araguaia River, State of Mato Grosso, Brazil

Revista Brasileira de Parasitologia Veterinária, 2008
Foram examinados 65 exemplares de pirarucu em agosto de 2004, provenientes do rio Araguaia, Estado de Mato Grosso, Brasil para o estudo dos seus helmintos parasitos. Cinco espécies foram registradas parasitando Arapaima gigas: Dawestrema cycloancistrium (
Sonia M. C. dos Santos, Paulo S. Ceccarelli, José L. Luque   +2 more
doaj   +1 more source

Fisher Behavior While Illegally Fishing for Atlantic Goliath Grouper (Epinephelus itajara, Epinephelinae) on the Amazon Continental Shelf, Brazil

Fisheries Management and Ecology, Volume 33, Issue 1, Page 1-13, February 2026.
ABSTRACT In 2002, the Brazilian government banned fishing for Goliath grouper, Epinephelus itajara (Lichtenstein, 1822), through 2007. This grouper was the first fish species targeted by a specific law in Brazilian environmental legislation. Grouper stocks showed no signs of recovery, so the ban was renewed multiple times since 2007. Official estimates
Felipe Moreira de Souza, Voyner Ravena Cañete, Paulo Emílio Costa Santos, Bianca Bentes   +3 more
wiley   +1 more source