Results 61 to 70 of about 4,279 (211)

Heart structure in the Amazonian teleost Arapaima gigas (Osteoglossiformes, Arapaimidae) [PDF]

Journal of Anatomy, 2018
AbstractThe fish heart ventricle has varied morphology and may have a specific morpho‐functional design in species adapted to extreme environmental conditions. In general, the Amazonian ichthyofauna undergoes constant variations in water temperature, pH and oxygen saturation, which makes these species useful for investigations of cardiac morphology ...
Mario Vitor Buzete Gardinal, Thalles Fernando Rocha Ruiz, Sandro Estevan Moron, Eliane Tie Oba Yoshioka, Ligia Uribe Gonçalves, Irene Bastos Franceschini Vicentini, Carlos Alberto Vicentini   +6 more
openaire   +3 more sources

Spread of Amazonian Freshwater Fishes Beyond Their Native Ranges

Fish and Fisheries, Volume 27, Issue 1, Page 56-67, January 2026.
ABSTRACT The spread and establishment of Amazonian species outside their native ranges through activities such as sport fishing, aquaculture, and the ornamental fish industry may lead to ecological changes in recipient ecosystems. We investigated the global distribution of Amazonian freshwater fish (AFF) and conducted a case study in the upper Paraná ...
Aymar Orlandi Neto, Luiz Guilherme dos Santos Ribas, Lidiane Franceschini, João Henrique Pinheiro Dias, Hugo Marques, Igor Paiva Ramos, Lilian Casatti, Éder André Gubiani, Jean Ricardo Simões Vitule   +8 more
wiley   +1 more source

Acute toxicity of trichlorfon and histological changes in the gills of Arapaima gigas, a neotropical fish from Amazon

Aquaculture Reports, 2022
Trichlorfon is a widely used drug to control ectoparasites in fish farming and is effective in treating protozoa, helminths, and crustaceans. However, prior to a concentration recommendation made for therapeutic purposes in aquaculture, it is necessary ...
Matheus Gomes da Cruz, Gabriela Tomas Jerônimo, Gabriel dos Santos Torres, Lorena Vieira de Matos, Driely Kathriny Monteiro dos Santos, Bianca Natally Viana Serra, Thiago Macedo Santana, Ligia Uribe Gonçalves   +7 more
doaj   +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, Volume 108, Issue 1, Page 69-85, January 2026.
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

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

lessons learned from monitoring conservation agreements in the Colombian Amazon [PDF]

, 2010
Many environmental issues can be attributed to misaligned distribution of the costs of conservation and the benefits of conservation. For instance, biodiversity represents value for the global community, but biodiversity protection imposes various ...
Mora, Margarita, Niesten, Eduard, Palacios, Erwin, Palacios, Francis, Victorino, Isaí   +4 more
core   +1 more source

Avaliação sensorial e Microbiológica do Bacon de Ventrecha de Pirarucu (Arapaima gigas) / Sensory and microbiological evalution of Pirarucu ventrecha bacon (Arapaima gigas)

Brazilian Journal of Development, 2022
O pescado é considerado um alimento altamente perecível, sendo necessária a adoção de tecnologias que aumentem sua vida de prateleira como a elaboração de novos produtos. O pirarucu é considerado um peixe de alto valor comercial, e apresenta características zootécnicas favoráveis para pisicicultura.
Joana Maia Mendes, Kendra Kaline de Oliveira Raio, Iris de Castro Fernandes, Rogério Souza de Jesus, Patrick Gomes de Souza, Antônio Augusto Marques Rodrigues   +5 more
openaire   +1 more source

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

Escapes of non-native fish from flooded aquaculture facilities: the case of Paranapanema River, southern Brazil [PDF]

, 2018
Non-native species are a major driver of biodiversity loss. Aquaculture activities play a key role in introductions, including the escape of fishes from fish farm facilities. Here, the impact of flooding due to El Niño rains in 2015/2016 in the Lower and
Agostinho, A.A., Britton, J.R., Casimiro, A.C.R., De Almeida, F.S., Garcia, D., Orsi, M., Vidotto-Magnoni, A.P.   +6 more
core   +1 more source

Reproducción, cría y manejo de Arapaima gigas

, 2023
Arapaima gigas es una especie de pez de lengua ósea amazónico. Resultan llamativos por su gran tamaño y sus escamas rojas y resultan de interés en las regiones amazónicas por su preciada carne. Estos peces tienen características reproductivas y morfológicas que hacen especial su cría y manejo.
Buzzi Rozalén, Carla, Martí Jimenez, Jose Ignacio   +1 more
openaire   +1 more source