Results 131 to 140 of about 247 (152)
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Environmental Science and Pollution Research, 2013
The Tubarão River rises in Santa Catarina, Brazil, and has been historically affected by coal mining activities around its springhead. To evaluate its water conditions, an investigation regarding a possible decontamination gradient associated with the increased river flow toward the estuary, as well as the influence of seasonality over this gradient ...
Luis F O Silva +2 more
exaly +3 more sources
The Tubarão River rises in Santa Catarina, Brazil, and has been historically affected by coal mining activities around its springhead. To evaluate its water conditions, an investigation regarding a possible decontamination gradient associated with the increased river flow toward the estuary, as well as the influence of seasonality over this gradient ...
Luis F O Silva +2 more
exaly +3 more sources
Environmentally related life history variations in Geophagus brasiliensis
Journal of Fish Biology, 2002Rosana Mazzoni, Ricardo Iglesias-Rios
exaly +2 more sources
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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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
openaire +2 more sources
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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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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Environmental Toxicology and Pharmacology, 2019
The ornamental stone industry generates considerable amounts of waste (OSPW), which may eventually reach natural environments and impact the local ecosystem. The aim of this study was to compare the toxic effects of two OSPW effluents in Geophagus brasiliensis: i) leachate effluent from a lagoon in an OSPW landfill (LE) and ii) decanted effluent from ...
Graciele Petarli Venturoti +5 more
openaire +2 more sources
The ornamental stone industry generates considerable amounts of waste (OSPW), which may eventually reach natural environments and impact the local ecosystem. The aim of this study was to compare the toxic effects of two OSPW effluents in Geophagus brasiliensis: i) leachate effluent from a lagoon in an OSPW landfill (LE) and ii) decanted effluent from ...
Graciele Petarli Venturoti +5 more
openaire +2 more sources
Environmental Toxicology and Pharmacology, 2019
Lead is toxic to fish, and its toxicity can be aggravated by the water temperature. Geophagus brasiliensis populations are geographically widespread and thus live in areas with different temperatures. The objective of this work was to evaluate the effects of lead-contaminated feed in fish (Geophagus brasiliensis) exposed to different temperatures.
Julia Merçon +7 more
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Lead is toxic to fish, and its toxicity can be aggravated by the water temperature. Geophagus brasiliensis populations are geographically widespread and thus live in areas with different temperatures. The objective of this work was to evaluate the effects of lead-contaminated feed in fish (Geophagus brasiliensis) exposed to different temperatures.
Julia Merçon +7 more
openaire +2 more sources
Journal of Fish Biology, 2013
Fourteen polymorphic microsatellite loci were isolated and characterized for the Neotropical cichlid Geophagus brasiliensis and tested on 30 individuals belonging to a single population. Among the 14 loci described, four showed potential presence of null alleles, inferred from the excess of homozygous genotypes, and three of these loci showed ...
D G, Ferreira +5 more
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Fourteen polymorphic microsatellite loci were isolated and characterized for the Neotropical cichlid Geophagus brasiliensis and tested on 30 individuals belonging to a single population. Among the 14 loci described, four showed potential presence of null alleles, inferred from the excess of homozygous genotypes, and three of these loci showed ...
D G, Ferreira +5 more
openaire +2 more sources