Three new species of the ‘ Geophagus’ brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini) [PDF]
Zoosystematics and Evolution, 2018 Morphological characters and phylogenetic trees generated by analyses of segments of two mitochondrial genes cytochrome b and cytochrome c oxidase I support recognition of three new species of the ‘Geophagus’ brasiliensis species group from coastal ...
Wilson J E M Costa
exaly +10 more sources
Rapid morphological change in multiple cichlid ecotypes following the damming of a major clearwater river in Brazil. [PDF]
Evol Appl, 2020 Abstract While anthropogenic disturbances can have damaging effects on biodiversity, they also offer an opportunity to understand how species adapt to new environments and may even provide insights into the earliest stages of evolutionary diversification. With these topics in mind, we explored the morphological changes that have occurred across several
Gilbert MC +3 more
europepmc +2 more sources
Metal pollution assessment in a Brazilian hydroelectric reservoir: Geophagus brasiliensis as a suitable bioindicator organism [PDF]
Revista Ambiente & Água, 2017 Vossoroca is a reservoir in the Brazilian state of Paraná. Although it is located near big cities and can be used as a human water supply, it has remained unstudied. Concentrations of toxic metals and arsenic in sediments, water, liver, gills, and muscle
Halina Binde Doria +3 more
doaj +4 more sources
Multiple soluble malate dehydrogenase of Geophagus brasiliensis (Cichlidae, Perciformes) [PDF]
Genetics and Molecular Biology, 1998 A recent locus duplication hypothesis for sMDH-B* was proposed to explain the complex electrophoretic pattern of six bands detected for the soluble form of malate dehydrogenase (MDH, EC 1.1.1.37) in 84% of the Geophagus brasiliensis (Cichlidae ...
Aquino-Silva Maria Regina de +2 more
doaj +8 more sources
Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis [PDF]
Neotropical Ichthyology, 2018 Oxygen and temperature are the most limiting factors in aquatic environments. Several species are exposed to variations of these factors in water because of physical, chemical and biological processes.
Jéssica A. Pereira +5 more
doaj +3 more sources
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 +2 more
exaly +6 more sources
Blood parameter analysis and morphological alterations as biomarkers on the health of Hoplias malabaricus and Geophagus brasiliensis [PDF]
Brazilian Archives of Biology and Technology, 2006 This study aimed to assess the influence of the environment on fish health. Samples of Hoplias malabaricus and Geophagus brasiliensis, were collected from three different environments: area I was urban and areas II and III were rural.
Silvia Romão +4 more
doaj +4 more sources
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 ...
Antonio Amorim +2 more
exaly +2 more sources
Urbanization can increase the invasive potential of alien species. [PDF]
J Anim Ecol, 2020 This paper looks at how urbanization enhances the success of invaders by changing species traits. The authors find that urbanization provides high food quality and quantity, which allows invasive guppies to increase body size and condition, number of offspring and population density. This suggests that urbanization promotes a highly invasive phenotype.
Santana Marques P +5 more
europepmc +2 more sources
Mesotrione herbicide promotes biochemical changes and DNA damage in two fish species [PDF]
Toxicology Reports, 2015 Mesotrione is one of the new herbicides that have emerged as an alternative after the ban of atrazine in the European Union. To our knowledge, any work using genetic or biochemical biomarkers was performed in any kind of fish evaluating the toxicity of ...
L.D.S. Piancini +3 more
doaj +2 more sources