Results 21 to 30 of about 7,373 (259)

Dieta de Astyanax bimaculatus (Linnaeus, 1758) (Characiformes, Characidae), da área de influência do reservatório de Corumbá, Estado de Goiás, Brasil

Acta Scientiarum: Biological Sciences, 2008
Com o objetivo de estudar a alimentação de Astyanax bimaculatus realizaram-se-se, no período de março de 1996 a fevereiro de 1997, amostragens mensais na área de influência do reservatório de Corumbá, agrupadas neste trabalho em três biótopos: Corumbá ...
Izabel de Fatima Andrian, Heloisa Baleroni Rodrigues Silva, Danielle Peretti   +2 more
doaj   +3 more sources

Habitat heterogeneity on feeding habit of two sympatric and congeneric characidae fishes in two tropical reservoirs [PDF]

Iheringia: Série Zoologia, 2016
Food flexibility and omnivory are important features pronounced in Neotropical freshwater fish species, particularly for Astyanax species. Traditionally most fish diet resources are known to be originated in the aquatic environment, however recent ...
Vanessa G. Lopes, Jorge L. Nessimian, Elidiomar R. Da-Silva, José Henrique C. Gomes, Ana Carolina I. M. Dias, Leonardo C. Souza, Christina W.C. Branco   +6 more
doaj   +2 more sources

High rDNA polymorphisms in Astyanax lacustris (Characiformes: Characidae): new insights about the cryptic diversity in A. bimaculatus species complex with emphasis on the Paraná River basin

Neotropical Ichthyology, 2022
This study aimed to identify species of Astyanax bimaculatus group from four Itaipu Reservoir tributaries (Paraná River Basin) by cytogenetics and molecular markers (COI) to investigate the possible occurrence of cryptic diversity in part of this basin ...
Sandro Tonello, Daniel R. Blanco, Fiorindo J. Cerqueira, Natália L. Lira, Josiane B. Traldi, Carla S. Pavanelli, Vladimir P. Margarido, Mariane Gavazzoni, Marcos V. Pupo, Roberto L. Lui   +9 more
doaj   +3 more sources

DNA barcode reveals a new lineage of Astyanax bimaculatus (Linnaeus 1758) in the basins of the Western Northeast Atlantic Region, Brazil

Anais da Academia Brasileira de Ciências
Astyanax bimaculatus are small characids known as piabas or lambaris that form a complex encompassing 18 species, including cryptic species. The present study aimed to use DNA barcode to analyze populations of A.
Roseane Cássia Galeno Oliveira, Jordânia Letícia do Nascimento Silva, Amanda Caroline Cardoso e Silva, Paulo Sérgio Fonseca de Sousa, Marcelo Silva de Almeida, Maria Histelle Sousa do Nascimento, Luis Fernando da Silva Rodrigues‐Filho, Maria Claudene Barros, Elmary da Costa Fraga   +8 more
openalex   +2 more sources

Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning [PDF]

Ciência Rural, 2019
: Lambari, Astyanax bimaculatus, is an oviparous, multiple-spawning fish that is reproductively active throughout the year, which makes it promising for cultivation and research.
L. Marcon, Vivian Rocha Freitas, N. Bazzoli, E. Rizzo, L. Benjamin   +4 more
semanticscholar   +5 more sources

Profile of micronucleus frequencies and DNA damage in different species of fish in a eutrophic tropical lake [PDF]

Genetics and Molecular Biology, 2009
Lake Paranoá is a tropical reservoir for the City of Brasilia, which became eutrophic due to inadequate sewage treatment associated with intensive population growth.
Cesar K. Grisolia, Carla L. G. Rivero, Fernando L. R. M. Starling, Izabel C. R. da Silva, Antonio C. Barbosa, Jose G. Dorea   +5 more
doaj   +6 more sources

Upper thermal tolerances and vulnerability to global warming in a Brazilian Caatinga fish Astyanax bimaculatus (Linnaeus, 1758) population

Austral Ecology, Volume 47, Issue 6, Page 1157-1161, September 2022., 2022
Abstract Global warming is predicted to increase both average temperatures and the frequency and duration of heat waves. Tropical ectotherms, particularly those living in warm environments are more prone to receive heat impacts. Then, it is crucial to identify those populations already exposed to high temperatures that may be at risk of decimation by ...
Andrés Egea‐Serrano, Maiara C. Alves, M. Solé, M. Tejedo   +3 more
semanticscholar   +2 more sources

Isozymes of malate-and lactate dehydrogenase of Astyanax bimaculatus as biomarkers of environmental impact [PDF]

Ambiente e Agua - An Interdisciplinary Journal of Applied Science, 2019
The activity of certain isozymes may serve as biomarkers of specific physiological conditions of living organisms. The present work aimed to evaluate malate dehydrogenase (MDH) and lactate dehydrogenase (LDH) isozymes from the hepatic, branchial and ...
Marilia Elias de Almeida, Maria Tereza Oliveira Batista, G. Vani, Mariana Feijó de Oliveira, E. Rodrigues, C. N. K. Suda   +5 more
semanticscholar   +2 more sources

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling. [PDF]

Mol Ecol
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Timana-Mendoza C, Reyes-Calderón A, Venail P, Britzke R, Santa-Maria MC, Araújo-Flores JM, Silman M, Fernandez LE.   +7 more
europepmc   +2 more sources

Determining management units in southeastern Brazil: the case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae). [PDF]

Hydrobiologia, 2018
Made available in DSpace on 2018-06-05T00:38:29Z (GMT). No. of bitstreams: 1 ID276191.pdf: 387781 bytes, checksum: d764bd7c7470fde5aeceabf2fdc37112 (MD5) Previous issue date: 2006-12 ...
DERGAM, J. A., MACHADO, F., PAIVA, S. R.
core   +2 more sources