Results 51 to 60 of about 10,475 (247)

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

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

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

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

Toxicidade aguda do paration metílico para tambaqui (Colossoma macropomum). [PDF]

, 2019
O objetivo deste trabalho foi determinar a toxicidade aguda do paration metílico para o ...
CHAGAS, E. C., SILVA, A. L. F. da
core  

Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon

Journal of Fish Biology, EarlyView.
Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy, Carolyn Morris, Susana Braz‐Mota, Chris M. Wood, Rafael M. Duarte, Ora E. Johannsson, Adalberto L. Val   +6 more
wiley   +1 more source

Identification of glycoproteins in mucous cells of the gill epithelium of Colossoma macropomum after exposure to organophosphate

Arquivo Brasileiro de Medicina Veterinária e Zootecnia
The use of organophosphates has been recommended for fish, especially the trichlorfon to control parasites. Colossoma macropomum were exposed to trichlorfon during 96 hours and of total number of mucous cells decreased in the number of cells when ...
S.E. Moron, P.R. Matos, A.T. Ramos, M.G.T. Gomes   +3 more
doaj   +1 more source

Perulernaea gamitanae (Copepoda: Lernaeidae) parasitizing tambaqui (Colossoma macropomum) (Characidae) and the hybrids tambacu and tambatinga, cultured in northern Brazil. [PDF]

, 2017
The infestation rate in Colossoma macropomum, hybrid tambacu (C. macropomum x Piaractus mesopotamicus) and hybrid tambatinga (C. macropomum x Piaractus brachypomum) with Perulernaea gamitanae Thatcher and Paredes, 1985 from two fish farms in Amapá State,
DIAS, M. K. R., MARINHO, R. G. B., NEVES, L. R., ONO, E. A., SANTOS, E. F., TAVARES-DIAS, M.   +5 more
core  

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