Results 51 to 60 of about 1,133 (175)

Genomic Insights Into Carnivorous Fish in the Characiformes

Ecology and Evolution, Volume 16, Issue 4, April 2026.
This study employed comparative genomic approaches using 12 high‐quality Characiformes genomes (covering nine subfamilies) with zebrafish as an outgroup to explore the molecular mechanisms underlying the carnivorous adaptation of Characiformes. Expanded gene families, positively selected genes, and rapidly evolving genes in carnivorous species were ...
Shihu Zhao, Xuesong Mei, Zhihao Zhang, Tian Xia, Shengyang Zhou, Yuehuan Dong, Shangbin He, Zhicheng Yao, Yuchun Li, Xiufeng Yang, Honghai Zhang   +10 more
wiley   +1 more source

Análise qualitativa da comunidade fitoplanctônica de uma piscicultura em Alvorada d´Oeste, Rondônia, Brasil

Acta Agronómica, 2015
A piscicultura é um dos segmentos da produção animal que mais cresce no cenário mundial. O levantamento da comunidade fitoplanctônica nestes ambientes permite estabelecer formas de manejo mais eficientes. Objetivou-se com esta pesquisa realizar a análise
Rafaela Lemes da Costa, Fabiano Moreira Figueiredo, Márcia Bay, Cláudio Brandão de Queiroz, Fernanda Bay-Hurtado   +4 more
doaj   +1 more source

Colossoma macropomum

Colossoma macropomum (Cuvier 1816) Distribution All Amazonia, plus northern drainages. Notes Barriga (1994) Galacatos et al. (2004), WCS (2007), Jácome-Negrete (2013).
Escobar-Camacho, Daniel, Valdiviezo-Rivera, Jonathan, Carrillo-Moreno, Carolina, Argüello, Pablo, Swing, Kelly   +4 more
openaire   +2 more sources

Estimation of genetic parameters for weight and length gains in tambaqui (Colossoma macropomum)

Brazilian Journal of Biology, 2023
Abstract The goal of this study was to determine the genetic parameters for growth traits in tambaqui (Colossoma macropomum) fish of similar age and weight. The data set included monthly measurements of body weight and length from120 fish for a year (1,440 measurements). The study found that weight gain had a heritability estimate of 0.01, while length
G. F. Silva, L. Shiotsuki, L. T. Dias, R. A. Teixeira   +3 more
openaire   +4 more sources

Exploring ecohydrology through the lens of local fishers in the Bolivian Amazon

Ecosphere, Volume 17, Issue 4, April 2026.
Abstract The natural flow regimes of Andean‐Amazon tributaries play a vital role in sustaining their rich biodiversity and productive local fisheries, but ongoing and proposed alteration of river flow regimes by large dams threatens to negatively impact river ecosystems. Despite its importance, our understanding of how hydrologic variability influences
Lina G. Terrazas‐Villarroel, Jochen Wenninger, Marcelo Heredia‐Gómez, Nick van de Giesen, Michael E. McClain   +4 more
wiley   +1 more source

Lasso Model for Morphological Covariation Patterns between Colossoma macropomum and Piaractus orinoquensis × Colossoma macropomum Hybrid [PDF]

Journal Of Biochemical Technology, 2021
Manuel Milla Pino, Danny Villegas Rivas, César Osorio Carrera, Nancy Carruitero Avila, Teresita Merino Salazar, Henry Díaz Merino, Carola Calvo Gastañaduy, Ricardo Shimabuku Ysa, Juan De La Cruz Lozado, River Chávez Santos, Dora Calvo Gastañaduy, Lillet Villavicencio Palacios   +11 more
openaire   +1 more source

Fine‐Scale Genomic Divergence in the Amazonian Pirarucu (Arapaima gigas) Highlights the Need for Local Management Strategies

Freshwater Biology, Volume 71, Issue 3, March 2026.
ABSTRACT Freshwater habitats face significant human disturbances globally, impacting food security and ecosystems. Protected areas can mitigate biodiversity loss, but limited data on population connectivity hinders conservation management. This study examines pirarucu (Arapaima gigas), a heavily exploited and threatened Amazonian fish, using genomic ...
Julia Tovar Verba, Ricardo J. Pereira, João V. Campos‐Silva, Izeni P. Farias, Tomas Hrbek, Carlos A. Peres, Joseph E. Hawes   +6 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

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