Results 171 to 180 of about 1,800 (195)
Influence of season and pollution on the antioxidant defenses of the cichlid fish acará (Geophagus brasiliensis) [PDF]
Brazilian Journal of Medical and Biological Research, 2001 The livers of Geophagus brasiliensis collected from both a non-polluted site and a polluted site were analyzed for different antioxidant defenses, O2 consumption, thiobarbituric acid-reactive substance (TBARS) levels, and histological damage. Compared to controls (116.6 +/- 26.1 nmol g-1), TBARS levels were enhanced at the polluted site (284.2 +/- 25.6
D Wilhelm Filho, M A Torres, R C Pedrosa
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Genotoxic Damages and Bioaccumulation of Cadmium in Geophagus Brasiliensis (Quoy & Gaimard, 1824)
Bulletin of Environmental Contamination and Toxicology, 2019The toxic effects of cadmium (Cd) in Geophagus brasiliensis was investigated in the present study. For this, 32 specimens of G. brasiliensis were exposed in individual aquaria to Cd concentrations (0.00, 0.01, 0.07, and 0.67 mg/L) for 14 days. The micronuclei test did not detect the genotoxic damage at the studied concentrations and time of exposure ...
Adriana Regina Chippari-Gomes
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Genetic diversity of Geophagus brasiliensis from the South American Atlantic Rainforest [PDF]
Forensic Science International: Genetics Supplement Series, 2017 Abstract The Atlantic Rainforest is one of the global conservation hotspots, representing a seriously threatened area with high levels of endemism and species richness. The fishes from the Atlantic Rainforest are one of the most exploited vertebrate groups by the international aquarium commerce, with an annual trade volume of about U$15-25 billions ...
D A Silva +2 more
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The hemoglobin of Geophagus brasiliensis (cichlidae)
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1991Abstract 1. 1. The hemoglobin of Geophagus brasiliensis was submitted to electrophoresis on starch gel and agar-starch on microscopic slides. In both supporting media five major components were observed. 2. 2. Stripped hemoglobin showed normal Bohr shift (Δlog p 50 /Δ pH = θ = −0.661 ).
Arno R. Schwantes +2 more
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Metazoan parasites of Geophagus brasiliensis (Perciformes: Cichlidae) in Patos lagoon, extreme south of Brazil [PDF]
Brazilian Journal of Veterinary Parasitology, 2015 Abstract This study has evaluated the parasitic fauna of 79 pearl cichlids (Geophagus brasiliensis) from the estuary of Patos Lagoon (31° 57' S and 52° 06' W), Rio Grande do Sul, Brazil, during the months of May and June in 2011 and 2012. All the hosts analyzed were infected with at least one species of parasite.
Joaber Pereira Júnior
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Zygote, 2021
SummaryStudies on the larval development of fish are essential for conservation and improvements in cultivation techniques. Geophagus brasiliensis popularly known as Cará has potential as a fish of interest in ornamental aquaculture. Wild adults of G. brasiliensis were kept in an aquarium for spontaneous reproduction.
Marcelo Duarte Ventura Melo +2 more
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SummaryStudies on the larval development of fish are essential for conservation and improvements in cultivation techniques. Geophagus brasiliensis popularly known as Cará has potential as a fish of interest in ornamental aquaculture. Wild adults of G. brasiliensis were kept in an aquarium for spontaneous reproduction.
Marcelo Duarte Ventura Melo +2 more
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Liquid Storage of Geophagus brasiliensis semen in the Presence of Different Extenders.
Cryo letters, 2021In order to preserve the genetic diversity of cichlid fish in gene banks, it is necessary to use certain extenders to maintain the integrity of spermatozoa cells during cooling.To evaluate the effects of different extenders on the quality parameters of cooled semen of Geophagus brasiliensis.Semen samples were collected from seven adult fish and diluted
J S, Caldas +7 more
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Trends of karyotypical evolution in the pearl cichlid, Geophagus brasiliensis, from southern Brazil
Zoology, 2013Chromosomal rearrangements such as inversions can facilitate speciation even in the presence of gene flow. The present study aims to analyze the karyotypic variation in six populations of Geophagus brasiliensis from southern Brazil. All specimens showed 2n=48 chromosomes, but three karyotypes were found to have one, two or three pairs of submetacentric
Giselle X, Perazzo +4 more
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Water level influences on body condition of Geophagus brasiliensis (Perciformes: Cichlidae) in a Brazilian oligotrophic reservoir [PDF]
Neotropical Ichthyology, 2004 Effects of water level fluctuations on body condition of Geophagus brasiliensis were studied in a 30 km² Brazilian oligotrophic reservoir. Physiological condition (K) and gonadosomatic index (GSI) were compared according to water level (low and high).
Alejandra Filippo Gonzalez Neves Dos Santos +2 more
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Environmentally related life history variations in Geophagus brasiliensis
Journal of Fish Biology, 2002The hypothesis of environmentally related life history variations between two Geophagus brasiliensis populations was investigated by comparing riverine and lacustrine populations. Mean standard length and length at maturity were higher in the lagoon population.
R. Mazzoni, R. Iglesias‐Rios
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