Search Results - "Júlio, Horácio Ferreira"
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A massive invasion of fish species after eliminating a natural barrier in the upper rio Paraná basin
Published in Neotropical Ichthyology (2009)“…Based on long-term studies in the upper rio Paraná basin, in addition to a broad review of literature and other information, we were able to identify 33…”
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Cytotoxicity and genotoxicity of Guaribas river water (Piauí, Brazil), influenced by anthropogenic action
Published in Environmental monitoring and assessment (01-06-2017)“…In general, tropical rivers have a great impact on human activities. Bioaccumulation of toxins is a worldwide problem nowadays and has been, historically,…”
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Invasive non-native species of fish in upper Paraná river Basin, Brazil: variations of caloric content in Cichla kelberi
Published in Neotropical Ichthyology (2012)“…The allocation of assimilated energy may be influenced by seasonal changes, growth, and reproductive cycle of fish, food consumption and environmental…”
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Occurrence of two cytotypes in Bryconamericus aff. iheringii (Characidae): karyotype analysis by C- and G-banding and replication bands
Published in Genetica (01-06-2008)“…Cytogenetic analyses of Bryconamericus aff. iheringii specimens from the upper Paraná River basin (State of Paraná, Brazil) are provided. They had 2n = 52…”
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Chromosome divergence and NOR polymorphism in Bryconamericus aff. iheringii (Teleostei, Characidae) in the hydrographic systems of the Paranapanema and Ivaí Rivers, Paraná, Brazil
Published in Genetics and molecular biology (2008)“…Cytogenetic studies were carried out in three populations of Bryconamericus aff. iheringii from two hydrographic systems of the Paranapanema and Ivai Rivers,…”
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The tilapia trail: the life story of a fish biologist
Published in Neotropical Ichthyology (01-03-2007)Get full text
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Genetic variability of brycon orbignyanus (valenciennes, 1850) (characiformes: characidae) in cultivated and natural populations of the upper paraná river, and implications for the conservation of the species
Published in Brazilian archives of biology and technology (01-08-2011)“…This study aimed to evaluate the genetic variability of B. orbignyanus in cultivated and natural populations of the Upper Paraná River, using molecular RAPD…”
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New occurrence of microchromosomes B in Moenkhausia sanctaefilomenae (Pisces, Characidae) from the Paraná River of Brazil: analysis of the synaptonemal complex
Published in Genetica (01-01-2000)“…The Moenkhausia sanctaefilomenae specimens showed a karyotype consisting of 2n = 50 chromosomes with 12 metacentrics, 36 submetacentrics and two…”
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Physico-chemical and genotoxicity analysis of Guaribas river water in the Northeast Brazil
Published in Chemosphere (Oxford) (01-06-2017)“…River pollution in Brazil is significant. This study aimed to evaluate the physico-chemical and genotoxic profiles of the Guaribas river water, located in…”
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First record of supernumerary (B) chromosomes in electric fish (Gymnotiformes) and the karyotype structure of three species of the same order from the upper Paraná River basin
Published in Comparative cytogenetics (01-01-2012)“…Cytogenetic studies were performed on the species Apteronotus prope albifrons Linnaeus, 1766, Rhamphichthys hahni Meinken, 1937 and Brachyhypopomus gauderio…”
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Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Parana River floodplain
Published in Neotropical Ichthyology (01-06-2013)“…The effects of the duration of the floods on abiotic variables and attributes of species tolerant and intolerant to hypoxia (STH and SIH respectively) were…”
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Cytogenetic comparison between two allopatric populations of Astyanax altiparanae Garutti et Britski, 2000 (Teleostei, Characidae), with emphasis on the localization of 18S and 5S rDNA
Published in Comparative cytogenetics (01-01-2011)“…Two populations of Astyanax altiparanae (Garutti & Britski, 2000) of the Água dos Patos stream/SP and lake Igapó/PR were analyzed. All individuals showed 2n =…”
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Invasive non-native species of fish in upper Paraná river Basin, Brazil: variations of caloric content in Cichla kelberi
Published in Neotropical ichthyology (01-01-2012)“…The allocation of assimilated energy may be influenced by seasonal changes, growth, and reproductive cycle of fish, food consumption and environmental…”
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Molecular identification of Cichla (Perciformes: Cichlidae) introduced in reservoirs in Southern Brazil
Published in Acta scientiarum. Biological sciences (06-05-2013)Get full text
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Chromosomal polymorphism and speciation in Laetacara cf. dorsigera (Teleostei, Perciformes, Cichlidae) from the river Paraná PR Brazil
Published in Caryologia (01-01-2005)“…Four sympatric and syntopic karyotype forms of Laetacara cf. dorsigera, centric fusion-originated were analyzed. Specimens with 2n=46, 2n=45, 2n=44 and 2n=43…”
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Karyotype description of possible new species of the Hypostomus ancistroides complex (Teleostei: Loricariidae) and other Hypostominae - doi: 10.4025/actascibiolsci.v34i2.9318
Published in Acta scientiarum. Biological sciences (01-10-2011)“…Cytogenetic analyses were performed in four species of the Hypostominae subfamily, three from Hypostomus (Hypostomini) genus and Rhinelepis aspera…”
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Invasão da piranha Serrasalmus marginatus Valenciennes, 1847 no alto rio Paraná, Brasil (Osteichthyes, Serrasalmidae)
Published in Acta scientiarum. Biological sciences (01-05-2008)“…A construção da barragem de Itaipu, 150 km a jusante do salto de Sete Quedas, resultou no afogamento da barreira geográfica natural, com conseqüente mistura…”
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Diferenciação genética entre populações de Pseudoplatystoma corruscans (Agassiz, 1829) (Osteichthyes, Pimelodidae) isoladas pelos saltos de Guaíra do rio Paraná
Published in Acta scientiarum. Biological sciences (01-05-2008)“…Os saltos de Guaíra, também denominados Sete Quedas, constituíam até 1982 uma barreira para a dispersão de peixes migradores. Este trabalho teve por objetivo…”
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Effects of the interannual variations in the flood pulse mediated by hypoxia tolerance: the case of the fish assemblages in the upper Paraná River floodplain
Published in Neotropical ichthyology (01-01-2013)“…The effects of the duration of the floods on abiotic variables and attributes of species tolerant and intolerant to hypoxia (STH and SIH respectively) were…”
Get full text
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