Results 51 to 60 of about 800 (196)

Geophagus sveni Lucinda, Lucena, Assis 2010

, 2018
{"references": ["Lucinda PHF, Lucena CAS, Assis NC. Two new species of cichlid fish genus Geophagus Heckel from the rio Tocantins drainage (Perciformes: Cichlidae). Zootaxa. 2010; 2429: 29 - 42.", "Moretto EM, Marciano FT, Velludo MR, Fenerich-Verani N, Espindola ELG, Rocha O.
Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da, Pavanelli, Carla Simone   +3 more
openaire   +2 more sources

Illuminating the Dark: Using eDNA Metabarcoding to Study the Unique Ichthyofauna of the Furnas Formation Sinkholes

Environmental DNA, Volume 7, Issue 4, July–August 2025.
Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra, Daniel M. Limeira, Roger H. Dalcin, Heron O. Hilário, Daniel C. Carvalho, Roberto F. Artoni   +5 more
wiley   +1 more source

Soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes): isolated isoforms and kinetics properties

Genetics and Molecular Biology, 2008
Kinetic properties and thermal stabilities of Geophagus brasiliensis skeletal muscle unfractionated malate dehydrogenase (MDH, EC 1.1.1.37) and its isolated isoforms were analyzed to examine a possible sMDH-B* locus duplication in a fixation process ...
Maria Regina de Aquino-Silva, Maria Luiza Barcellos Schwantes, Flavia Simone Munin, Arno Rudi Schwantes, Silvana Pereira dos Santos   +4 more
doaj   +1 more source

Antagonistic Rewiring and Turnover Patterns in a Neotropical Fish–Parasite Metanetwork

Freshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT Integrating beta‐diversity and network analyses is an emerging approach for understanding the spatial structure of species communities. For instance, although the presence of hosts affects parasite species distribution, environmental factors can either restrict or promote the occurrence of certain parasite species by changing the abundance of ...
Ana Paula Lula Costa, Paulo R. Guimarães, Andre A. Padial   +2 more
wiley   +1 more source

The concentrations of heavy metals and the incidence of micronucleated erythrocytes and liver EROD activity in two edible fish from the Paraíba do Sul river basin in Brazil

Vigilância Sanitária em Debate: Sociedade, Ciência & Tecnologia, 2015
Título PT: Concentração de metais pesados e incidência de eritrócitos micronucleados e atividade de EROD hepática em duas espécies de peixes comestíveis na bacia do Rio Paraíba do Sul, Brasil A bacia do rio Paraíba do Sul (PSR) atravessa uma das regiões
Thiago Estevam Parente Martins, Laísa Maria Freire dos Santos, Ana Cecília Amado Xavier de Oliveira, João Paulo de Machado Torres, Francisco Gerson Araújo, Isabella Fernandes Delgado, Francisco José Roma Paumgartten   +6 more
doaj   +4 more sources

GROWTH OF Geophagus brasiliensis REARED AT DIFFERENT TEMPERATURES AND FEEDING REGIMES

Boletim do Instituto de Pesca, 2021
The aim of this study was to evaluate the growth performance of Geophagus brasiliensis rearedb under distinct temperatures (24.3 ± 0.9, 28.1 ± 1.0, and 31.7 ± 0.8°C) and feeding regimes (apparent satiety and a supply of 4% of the total biomass).
Leone de Souza MEDINA, Maurício Gustavo Coelho EMERENCIANO, Fábio BITTENCOURT, Giovanni Lemos de MELLO   +3 more
openaire   +2 more sources

Assessment of water quality and genotoxic impact by toxic metals in Geophagus brasiliensis

Chemosphere, 2016
This study used the pearl cichlid Geophagus brasiliensis as a bioindicator to survey the health of the aquatic environment on four sites (P1, P2, P3 and P4) of the Mumbuca stream located at Monte Carmelo/MG, Brazil. The selection of different sites was made with reference to the gradient of urban activity and via physicochemical and biological ...
Cássio Resende Morais, Stephan Malfitano Carvalho, Galber Rodrigues Araujo, Henrique Nazareth Souto, Ana Maria Bonetti, Sandra Morelli, Edimar Olegário Campos Júnior   +6 more
openaire   +2 more sources

Larger Fish Upstream: Testing the Drivers of Fish Longitudinal Size Distribution in a Stream

Freshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT The “larger fish upstream pattern” (LFUP), where fish size increases from river mouths toward headwaters, is widely documented, but the drivers remain unclear. Here, we tested whether LFUP is related to species reproductive strategies or environmental factors (differential growth, predation, competition). Using historical data (1994–1998) from
Pedro Wolf, Piatã Marques, Rosana Mazzoni   +2 more
wiley   +1 more source

FIGURE 11. Geophagus winemilleri. AMNH 233638 in Geophagus abalios, G. dicrozoster and G. winemilleri (Perciformes: Cichlidae), three new species from Venezuela

, 2004
FIGURE 11. Geophagus winemilleri. AMNH 233638, adult paratype immediately after capture at comunidad Punta de Barbosa, Río Negro headwaters, Amazonas State, Venezuela.
López-Fernández, Hernán, Taphorn, Donald C., López-Fernández, Hernán (5191375), Taphorn, Donald C. (5191372)   +3 more
core   +1 more source

Variação sazonal dos metazoários parasitos de Geophagus brasiliensis (Perciformes: Cichlidae) no rio Guandu, Estado do Rio de Janeiro, Brasil - doi: 10.4025/actascibiolsci.v32i2.4883

Acta Scientiarum: Biological Sciences, 2010
O presente trabalho estuda a variação sazonal dos metazoários parasitos de Geophagus brasiliensis do rio Guandu, Estado do Rio de Janeiro, Brasil. Para isso foram realizadas quatro coletas trimestrais de 50 espécimes de G.
Adriano Reder Carvalho, Luiz Eduardo Tavares, Jose Luis Luque   +2 more
doaj   +1 more source