Results 21 to 30 of about 2,407 (162)

The effect of environmental factors on transepithelial potential in a model Amazonian teleost, the tambaqui (Colossoma macropomum): Implications for sodium balance in harsh environments

Journal of Fish Biology, EarlyView.
Abstract The tambaqui (Colossoma macropomum, G. Cuvier 1818) thrives both in the ion‐poor waters of the Amazon and in commercial aquaculture. In both, environmental conditions can be harsh due to low ion levels, occasional high salt challenges (in aquaculture), low pH, extreme PO2 levels (hypoxia and hyperoxia), high PCO2 levels (hypercapnia), high ...
Chris M. Wood, Anne Crémazy, Carolyn Morris, Ora E. Johannsson, Gudrun De Boeck, Adalberto Luis Val   +5 more
wiley   +1 more source

Treatments for the control of Neoechinorhynchus buttnerae (Acanthocephala) in tambaqui Colossoma macropomum

Aquaculture International, 2022
Abstract Intensive fish farming with inadequate management can imbalance the fish-pathogen-environment relationship, culminating in diseases outbreaks. In the case of tambaqui Colossoma macropomum farming, it may be affected by acanthocephalosis, a parasitic infection without a specific and safe treatment yet. The objective of this study was to
Bruna Rafaela Caetano Nunes, Yuri Vinicius de Andrade Lopes, Ricardo Henrique B. de Souza, Raul Dirceu Pazdiora, Thiago Tetsuo Ushizima, Simone Paiva Medeiros, Lorrayne Tavares Corrêa, Igor Izidoro Cardoso, Matheus Vitor Vieira Andrade, Patricia Oliveira Maciel-Honda, Edsandra Campos Chagas, Fernanda de Alexandre Sebastião   +11 more
openaire   +1 more source

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

Similarity between Piaractus mesopotamicus, Colossoma macropomum and their interspecific hybrids

Aquaculture, 2020
Abstract This study aimed to estimate the genetic similarities between Pacu (Piaractus mesopotamicus), Tambaqui (Colossoma macropomum) and their intraspecific hybrids. Sixty Pacu, Tambaqui, Tambacu and Paqui specimens were used, which were anaesthetised (benzocaine 60 mg/L), weighed and analysed for morphometric body parameters.
Costa, Adriano Carvalho, Serafini, Moacyr Antônio, Neto, Rafael Vilhena Reis, Santos, Priscilla Freitas, Marques, Letícia Ribeiro, de Rezende, Isabel Rodrigues, Mendonça, Maria Andreia Corrêa, Allaman, Ivan Bezerra, de Freitas, Rilke Tadeu Fonseca   +8 more
openaire   +4 more sources

Molecular characterization of Serrasalmidae hybrid in the upper Paraná River floodplain using molecular markers

Journal of Fish Biology, EarlyView.
Abstract This study reports the molecular identification of a tambacu—a hybrid of Colossoma macropomum and Piaractus mesopotamicus—in the floodplain of the upper Paraná River using molecular markers. The PCR‐GEL method, based on the analysis of COI and TROP fragments, successfully characterized the hybrid, while PCR‐SEQ, employing RAG2 and TROP markers,
Laura Ivana Ramos, Eloisa de Páris Paz, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto, Alessandra Valéria de Oliveira   +4 more
wiley   +1 more source

Eugenol as an efficacious anaesthetic for tambaqui, Colossoma macropomum (Cuvier)

Aquaculture Research, 2005
Anaesthetics are important in fish culture to reduce handling stress and mortality. Eugenol is a promising anaesthetic because of its low cost, efficacy, safety margin for fish and lack of toxicity to humans. The goal of this study was to establish a protocol using eugenol as a fish anaesthetic for tambaqui Colossoma macropomum (Cuvier), and provide ...
Roubach, Rodrigo, Gomes, Levy de Carvalho, Leão Fonseca, Flavio Augusto, Val, Adalberto Luis   +3 more
openaire   +3 more sources

A wild‐caught rosy barb Pethia conchonius in a British urban pond underscores the need to prevent aquarium releases

Journal of Fish Biology, EarlyView.
Abstract A specimen of rosy barb Pethia conchonius of 51 mm standard length, encountered in an urban pond in London, is reported. This small cyprinid is native to lakes and streams in subtropical regions of southern Asia and is commonly sold as an ornamental fish.
Peter J. Barry, Phil I. Davison, Luke Pearson, Gordon H. Copp   +3 more
wiley   +1 more source

Effect of dichlorvos on the acetylcholinesterase from tambaqui (Colossoma macropomum) brain [PDF]

Environmental Toxicology and Chemistry, 2007
Abstract Dichlorvos is an acutely toxic organophosphorous pesticide that is known as a classical acetylcholinesterase (AChE; EC 3.1.1.7) inhibitor. Here, the brain AChE from the important Amazonian fish tambaqui (Colossoma macropomum) was assayed in the presence of this insecticide and also of deltamethrin, a classical sodium and ...
Patrícia Fernandes Castro, Ranilson de Souza Bezerra, Ian P.G. Amaral, Caio Rodrigo Dias de Assis, Luiz B. Carvalho   +4 more
openaire   +3 more sources

Contribution of Amino Acids in Cereal Grain Products to Precision Feed Formulation for Tambaqui (Colossoma macropomum) Using a Digestibility Approach

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Although cereal grain products have low protein content, they can contribute up to 25% of total protein in low‐trophic level/omnivorous fish diets. Thus, understanding the amino acid contribution of these ingredients becomes crucial for meeting the dietary requirements of omnivorous fish.
Danilo C. Proença, Monaliza F. Sena, Janaína G. Araújo, Guilherme W. Bueno, Igo G. Guimarães   +4 more
wiley   +1 more source

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