Results 71 to 80 of about 9,096 (223)

Studies of micronuclei and other nuclear abnormalities in red blood cells of Colossoma macropomum exposed to methylmercury

Genetics and Molecular Biology, 2011
The frequencies of micronuclei (MN) and morphological nuclear abnormalities (NA) in erythrocytes in the peripheral blood of tambaqui (Colossoma macropomum), treated with 2 mg.L-1 methylmercury (MeHg), were analyzed.
Carlos Alberto Machado da Rocha, Lorena Araújo da Cunha, Raul Henrique da Silva Pinheiro, Marcelo de Oliveira Bahia, Rommel Mario Rodríguez Burbano   +4 more
doaj   +1 more source

Amazonian drought of 2023: Environmental conditions relevant to fishes

Journal of Fish Biology, Volume 108, Issue 3, Page 803-823, March 2026.
Abstract This paper provides a platform for the following studies within this Special Issue. ‘Ecophysiology of fishes in the two great tributaries of the Amazon in the Anthropocene’. It documents the water quality conditions and accompanying zooplankton community structure and biomass relative to fish health in the Rio Negro and Rio Solimões during the
Ora E. Johannsson, Thiago L. Nascimento, Helen Agasild, Priit Zingel, Rafael M. Duarte, Gudrun de Boeck, Anne Cremazy, Jhonatan Mota da Silva, Carolyn Morris, Chris M. Wood, Adalberto L. Val   +10 more
wiley   +1 more source

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

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2011
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,
M. Tavares-Dias, L.R. Neves, E.F. Santos, M.K.R. Dias, R.G. B. Marinho, E.A. Ono   +5 more
doaj   +1 more source

Effects of afferent input on the breathing pattern continuum in the tambaqui (Colossoma macropomum) [PDF]

Respiratory Physiology & Neurobiology, 2003
This study used a decerebrate and artificially-ventilated preparation to examine the roles of various afferent inputs in breathing pattern formation in the tambaqui (Colossoma macropomum). Three general breathing patterns were observed: (1) regular breathing; (2) frequency cycling and (3) episodic breathing.
Reid, Stephen, Sundin, Lena, Florindo, Luis, Rantin, Francisco, Milsom, William   +4 more
openaire   +2 more sources

Ocular Morphology and Clinical Ophthalmic Parameters of Nile Tilapia Oreochromis niloticus

Veterinary Ophthalmology, Volume 29, Issue 2, March 2026.
ABSTRACT Objective To describe the ocular morphological characteristics and establish clinical and ophthalmic reference standards for Nile tilapia. Animals Studied Fresh carcasses were used for diaphanization, optical and electron microscopy, and computed tomography analyses.
Dandara Franco Ferreira da Silva, Lucélia Gonçalves Vieira, Pedro Vale de Azevedo Brito, Sonia Nair Báo, Ingrid Gracielle Martins da Silva, Rodrigo Diana Navarro, Clarissa Machado de Carvalho, Paula Diniz Galera, Daniel Henrique Viana da Silva, Weslley de Souza Barbosa, Rosélia de Lima Sousa Araújo, Giane Regina Paludo, Liria Queiroz Luz Hirano   +12 more
wiley   +1 more source

Anthropogenic Barriers Limit Fish Access to Essential Habitats in the Amazon in the Face of Climate Change

Global Change Biology, Volume 32, Issue 1, January 2026.
Rivers across the Amazon Basin are increasingly threatened by climate change and dam construction, which restrict fish movements. We combined climate projections with river‐network connectivity analyses to identify where suitable habitats for frugivorous and socioeconomically important fish are likely to persist and where access may be lost due to ...
Kátia Yasuko Yofukuji, Thomaz Mansini Carrenho Fabrin, Bruno Henrique Mioto Stabile, Angelo Antonio Agostinho, Céline Jézéquel, Valéria Flávia Batista‐Silva, Luiz Fernando Esser, José Hilário Delconte Ferreira, Reginaldo Ré, Pablo A. Tedesco, João Carlos Azevedo, Dayani Bailly   +11 more
wiley   +1 more source

The Effect of Probiotic Addition in Feed Towards Growth Performance and Survival Rate of Tambaqui (Colossoma Macropomum) Using Bioflocs System [PDF]

, 2019
This research aim to determine the optimal dose of additional probiotic in feed toward the growth performance and survival rate of tambaqui (Colossoma macropomum) by using biofloc system.
Abrar, W. A. (Wirangga), Pamukas, N. A. (Niken), Putra, I. (Iskandar)   +2 more
core  

Stress Nutrition in Aquatic Animals: From Definition to Practice

Reviews in Aquaculture, Volume 18, Issue 1, January 2026.
ABSTRACT Aquaculture faces numerous challenges, with stress being one of the major issues that lead to growth loss, metabolic disorders, weakened immunity, redox imbalance, and organ damage in aquatic animals. Nutritional intervention is one of the effective strategies to address these problems. Traditional research has primarily focused on the impacts
Jian Zhang, Qianwen Ding, Ruobing Lou, Yuanpei Zhang, Yuanyuan Yao, Yalin Yang, Zhen Zhang, Chao Ran, Zhigang Zhou   +8 more
wiley   +1 more source

Investigations on the respiration of the Neotropical fish, Colossoma macropomum (Serrasalmidae). The influence of weight and temperature on the routine oxygen consumption

, 1983
The influence of weight and temperature on the routine oxygen consumption of Colossoma macropomum, a Neotropical fish species of the family Serrasalmidae, was investigated using a constant flow respirometer.
Saint-Paul, U.
core  

Monoterpenes: Functional Additives for Reducing Antibiotics in Aquaculture

Reviews in Aquaculture, Volume 18, Issue 1, January 2026.
ABSTRACT Aquaculture is a rapidly growing industry that supplies fish for global consumption. However, the intensive production practices have resulted in disease outbreaks, largely driven by the misuse of antibiotics. Natural alternatives, such as monoterpenes, which are biocompounds derived from essential oils obtained from plants like thyme and ...
Danilo Vitor Vilhena Batista, Barbara Silveira Souza, Caio Francisco Santana Farias, Ana Paula de Souza, Alexandre Vaz da Silva, Emilly Monteiro Lopes, Elenice Martins Brasil, Maurício Laterça Martins, José Luiz Pedreira Mouriño, Marco Shizuo Owatari   +9 more
wiley   +1 more source