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Registros recuperados: 16
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Analysis by RAPD of the genetic structure of Astyanax altiparanae (Pisces, Characiformes) in reservoirs on the Paranapanema River, Brazil Genet. Mol. Biol.
Leuzzi,Maria Sueli Papa; Almeida,Fernanda Simões de; Orsi,Mário Luís; Sodré,Leda Maria Koelblinger.
In this study, the RAPD technique was used to analyze the genetic structure of populations of the fish Astyanax altiparanae (Characidae, Tetragonopterinae) living in the lower, middle and upper Paranapanema River, Brazil. The aim was to assess this structure regarding fish handling and conservation programs. The genetic variability (P) was found to be 42.64%, 75% and 75% in the low, middle and upper reaches, respectively. The dendrogram of genetic similarity, obtained by comparative analysis of the sets of samples from the three sites, showed the formation of three clusters. All of the genetic parameters used indicate that the population in the lower Paranapanema is genetically different from those in the middle and upper sections. The theta P test shows...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; RAPD; Genetic structure; Genetic conservation; Fish.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300009
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Avaliação da dieta de Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes, Tetragonopterinae) antes e após a formação do reservatório de Salto Caxias, Estado do Paraná, Brasil Biological Sciences
Cassemiro, Fernanda Aparecida da Silva; UEM; Hahn, Norma Segatti; UEM; Fugi, Rosemara; UEM.
Esse estudo objetivou avaliar a dieta de Astyanax altiparanae (Osteichthyes, Tetragonopterinae) no ambiente natural e após a formação do reservatório de Salto Caxias, rio Iguaçu, Estado do Paraná, Brasil, a fim de investigar a adaptabilidade trófica da espécie. As coletas foram realizadas de março/97 a fevereiro/00 resultando na obtenção de 582 estômagos, cujos itens alimentares foram quantificados, volumetricamente. Na fase rio, a espécie mostrou forte tendência à herbivoria, e após o represamento, uma dieta onívora. Na análise de agrupamento (DCA), formaram-se grupos temporais distintos: o primeiro agrupou alguns exemplares coletados na fase rio com dieta mais especializada e o segundo, exemplares coletados após o represamento e que apresentaram dieta...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas dieta; Astyanax altiparanae; Variações temporais; Reservatório 2.00.00.00-6 Ciências Biológicas.
Ano: 2002 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2314
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Colonization of the Corumbá Reservoir (Corumbá River, Paraná River Basin, Goiás State, Brazil) by the "lambari" Astyanax altiparanae (Tetragonopterinae; Characidae) BABT
Dias,Rosa Maria; Bailly,Dayani; Antônio,Rosimeire Ribeiro; Suzuki,Harumi Irene; Agostinho,Angelo Antonio.
This work aimed to determine which population features were important to the colonization process of Astyanax altiparanae in the Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught in all months and sites. Higher CPE values were recorded upstream from the reservoir during the filling phase. In this phase, reproductive activity was intense upstream and moderate in the tributaries. However, a fall in abundance of juveniles was observed after the formation of the reservoir. Among the most relevant population features to grant a successful colonization were wide geographic distribution, ability to occupy and spawn in lentic habitats and feeding flexibility.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Reservoir; Colonization; Reproduction.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300017
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Efeito anestésico do óleo de cravo em alevinos de lambari Ciência Rural
Silva,Elyara Maria Pereira-da; Oliveira,Ricardo Henrique Franco de; Ribeiro,Maria Angélica Rosa; Coppola,Milena Pereira.
Para avaliar o efeito anestésico do óleo de cravo em lambaris (Astyanax altiparanae), cinco grupos de 30 alevinos (0,6±0,1g) foram expostos às concentrações de 50, 75, 100, 125 e 150mg L-1, medindo-se, respectivamente: tempo de indução à anestesia profunda (caracterizada pela perda de equilíbrio, pela ausência de natação, pela redução dos movimentos operculares e pelas respostas apenas a estímulos táteis mais intensos), tempo de recuperação e taxa de mortalidade após a exposição. Em uma segunda etapa (10 peixes/tratamento), registraram-se, para cada concentração, os tempos de indução e de recuperação após anestesia cirúrgica (movimentos operculares lentos e irregulares e perda de reações a estímulos), anotando-se a mortalidade após seis minutos de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eugenol; Astyanax altiparanae; Manejo; Anestesia.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000600033
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Effectiveness of estradiol valerate on sex reversion in Astyanax altiparanae (Characiformes, Characidae) BABT
Bem,Jaqueline Cristina de; Fontanetti,Carmem Silvia; Senhorini,José Augusto; Parise-Maltempi,Patricia Pasquali.
The objective of this study was to evaluate the effectiveness of estradiol valerate in an attempt to feminize the male Astyanax altiparanae. One thousand newly-hatched larvae were randomly distributed in four incubators. During a period of 30 days, estradiol valerate was administered in different dosages (20, 40, and 80 mg/kg of diet); the control group did not receive hormone in the diet. After 161 days of hatching, biometry was performed on 50 fishes per treatment group, and the gonads were analyzed. The hormone treatments were effective in feminizing A. altiparanae, achieving 70-76% of the desired sex, while the control treatment had 44% females. The hormone did not affect the growth of fish.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Characidae; Feminization; Sex Reversion; Estrogen.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200015
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Effects of biodegradable detergents in morphological parameters of liver in two neotropical fish species (Prochilodus lineatus and Astyanax altiparanae). Repositório Alice
PEREIRA, B. F.; ALVES, R. M. da S.; ALVES, A. L.; SENHORINI, J. A.; ROCHA, R. de C. G. de A.; SCALIZE, P. H.; PITOL, D. L.; CAETANO, F. H..
Indiscriminate disposal of residues of domestic and/or industrial origin in aquatic ecosystems resulting from urban activities causes concern about their effects on the fauna. Substances absorbed by animals, such as those cited above, are metabolized by the liver, as it is the main target organ of several pollutants and also exercises basic vital functions in the organism. For this reason the liver is used as the main and most reliable biomarker in environmental studies. Thus the objective of the present study was to identify hepatic alterations resulting from exposure to water contaminated by a few commercial brands of biodegradable detergents and their effects when present together with several other contaminants found in nature. For such, a solution of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Prochilodus lineatus; Astyanax altiparanae; Peixe; Figado; Biodegradação; Detergente; Poluição; Lago; Fish; Liver; Detergents; Pollution.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/996937
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First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae) Genet. Mol. Biol.
Hashimoto,Diogo Teruo; Gonçalves,Vanessa Regina; Bortolozzi,Jehud; Foresti,Fausto; Porto-Foresti,Fábio.
Several species of the genus Astyanax have already been genetically studied, and B-chromosomes have been considered to be an interesting feature in some species of this group. In the present paper we report, for the first time, the occurrence of a B microchromosome in a natural population of A. altiparanae. This additional genomic element was identified as an acrocentric chromosome, similar in size to the smallest chromosomal pairs of the standard karyotype. Analysis of the constitutive heterochromatin pattern by C-banding evidenced heterochromatic blocks located on centromeric, pericentromeric, and interstitial regions of some chromosomes, and also positive marks in a subtelocentric chromosomal pair that presented the short arms entirely heterochromatic....
Tipo: Info:eu-repo/semantics/article Palavras-chave: B chromosomes; Fish cytogenetics; Astyanax altiparanae.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200021
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Genotoxic and mutagenic effects of polluted surface water in the midwestern region of Brazil using animal and plant bioassays Genet. Mol. Biol.
Dourado,Priscila Leocádia Rosa; Rocha,Monyque Palagano da; Roveda,Liriana Mara; Raposo Junior,Jorge Luiz; Cândido,Liliam Sílvia; Cardoso,Claudia Andréa Lima; Morales,Maria Aparecida Marin; Oliveira,Kelly Mari Pires de; Grisolia,Alexeia Barufatti.
Abstract This study aimed to evaluate DNA damage in animal and plant cells exposed to water from the Água Boa stream (Dourados, Mato Grosso do Sul, Brazil) by using bioassays, and to identify the chemical compounds in the water to determine the water quality in the area. Through the cytotoxicity bioassay with Allium cepa, using micronucleus test, and comet assay, using Astyanax altiparanae fish, the results indicated that biological samples were genetically altered. Micronuclei were observed in erythrocytes of A. altiparanae after exposure to water from locations close to industrial waste discharge. The highest DNA damage observed with the comet assay in fish occurred with the exposure to water from locations where the presence of metals (Cu, Pb, Cd, Ni)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium cepa; Astyanax altiparanae; Mutagenicity; Cytotoxicity; Genotoxicity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100123
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Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas Neotropical Ichthyology
Vieira,Carlos Eduardo Delfino; Almeida,Mayara da Silva; Galindo,Bruno Ambrssio; Pereira,Lindalva; Martinez,Claudia Bueno dos Reis.
Aquatic ecosystems in areas with intense agricultural activity are subject to pesticide contamination, which may compromise the health of the fish. In order to verify the quality of the water and the possible effects of pesticides on fish, a method that combines different biomarker responses into an index named "integrated biomarker response" (IBR) was applied using the biological alterations in the Neotropical fish Astyanax altiparanae. Fish were maintained in situ at five sites along a stream that runs in an agricultural area and in a stream within a forest fragment, considered a reference site. After seven days of exposure the following alterations were observed in fish confined at experimental sites: increased activity of glutathione-S-transferase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Biomonitoring; Biotransformation; Genotoxicity; Pesticides.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100153
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Mapping of the 18S and 5S ribosomal RNA genes in Astyanax altiparanae Garutti & Britski, 2000 (Teleostei, Characidae) from the upper Paraná river basin, Brazil Genet. Mol. Biol.
Fernandes,Carlos Alexandre; Martins-Santos,Isabel Cristina.
Fluorescence in situ hybridization (FISH) was undertaken in order to determinate the chromosomal distribution pattern of 18S and 5S ribosomal DNAs (rDNA) in four populations of the characid fish Astyanax altiparanae from the upper Paraná river basin, Brazil. The 18S rDNA probe FISH revealed numerical and positional variations among specimens from the Keçaba stream compared to specimens of the other populations studied. In contrast to the variable 18S rDNA distribution pattern, highly stable chromosomal positioning of the 5S rDNA sites was observed in the four A. altiparanae populations. Divergence in the distribution pattern of 18S and 5S rDNA sites is also discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Fluorescence in situ hybridization (FISH); 18S rDNA; 5S rDNA; Sequential Ag-NOR.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300011
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Metazoan parasite of lambari Astyanax altiparanae, collected from the Peixe river, São Paulo, southeast of Brazil Ciência Rural
Camargo,Aline de Almeida; Negrelli,Débora Caroline; Pedro,Natacha Heloísa Olavo; Azevedo,Rodney Kozlowiski de; Silva,Reinaldo José da; Abdallah,Vanessa Doro.
ABSTRACT: In March 2010, 44 specimens of Astyanax altiparanae Garutti & Britski, 2000, commonly known as "lambari do rabo amarelo", collected from the Peixe river in the state of São Paulo, Brazil were analyzed. Out of these 44 fishes, 38 had at least one species of metazoan parasite. Fifteen metazoan parasites species were collected and identified: Urocleidoides trinidadensis , Diaphorocleidus kabatai , Diaphorocleidus orthodusus, Diaphorocleidus sp., Urocleidoides sp., Trinibaculum altiparanae , Gyrodactylus sp., Jainus hexops, Contracaecum sp., Procamallanus (Spirocamallanus) inopinatus, Vaigamus sp., Amplexibranchius bryconis, Ergasilus sp., Zonocotyloides haroltravassossi and Henneguya sp. Six species of parasites presented a prevalence of over...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Lambari; Peixe river; Parasite; Brazil..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500876
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O lambari Astyanax altiparanae (Characidae) pode ser um dispersor de sementes? - DOI: 10.4025/actascibiolsci.v25i2.2045 Biological Sciences
Gomiero, Leandro Muller; Unesp Rio Claro; Braga, Francisco Manoel de Souza; UNESP.
Este trabalho caracterizou a alimentação natural de Astyanax altiparanae na sub-bacia do rio Corumbataí e bacia do rio Jacaré-pepira, com enfoque principal na ingestão de sementes de Croton urucurana. Os itens alimentares de Astyanax altiparanae, em ordem decrescente de Grau de Preferência Alimentar (GPA), foram: insetos alóctones, restos de insetos, material vegetal alóctone, sementes de Croton urucurana, insetos autóctones, sedimentos, material vegetal autóctone, escamas, ovócitos e aracnídeos. Sementes de Croton urucurana ocorreram no verão, época de cheia dos rios. Sugere-se que Astyanax altiparanae seja um dispersor secundário das sementes de Croton urucurana, sendo que a intensidade e a efetividade dessa dispersão devem, ainda, ser investigadas
Palavras-chave: 2.01.00.00-0 Biologia Geral alimentação natural; Astyanax altiparanae; Dispersor; Sementes; Croton urucurana 2.01.00.00-0 Biologia Geral.
Ano: 2003 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2045
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Population biology of dominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir (low Tietê river, São Paulo State, Brazil) - DOI: 10.4025/actascibiolsci.v31i1.650 Biological Sciences
Vidotto, Ana Paula; UNESP; Carvalho, Edmir Daniel; UNESP.
The aim of this study is to characterize some population biology parameters of P. squamosissimus, A. altiparanae and S. maculates, the dominant fish species of the Santa Bárbara river, a tributary of the Nova Avanhandava reservoir, low Tietê river. Fish samplings were performed monthly between September/2002 and August/2003, using gill nets with different mesh sizes. Females of all species have larger standard lengths than males (Mann-Whitney, p < 0.0001), and are more frequent in superior size classes (Kolmogorov-Smirnov, p < 0.0001). All populations presented isometric growth, but differences between males and females were observed. Only P. squamosissimus presented a gender ratio different from 1:1, with a higher proportion of males (1:2,...
Palavras-chave: 2.01.00.00-0 Biologia Geral reservoir; Tietê river; Population biology; Plagioscion squamosissimus; Astyanax altiparanae; Serrasalmus maculatus Recursos Pesqueiros e Engenharia de Pesca.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/650
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Sesame oil in diets for lambari: Effects on growth parameters, corporal chemical composition and physiological alterations Ciência Rural
Natori,Mariene Miyoko; Alves,Rachel Cristina Prehl; Oliveira,Ricardo Henrique Franco de; Segura,Julio Guerra; Viegas,Elisabete Maria Macedo.
ABSTRACT: The inclusion of sesame oil associated with soybean, linseed and freshwater fish residue oil in the diets fed to Lambaris Astyanax altiparanaewas evaluated by the growth performance parameters, body composition and possible physiological changes (GARUTTI & BRISTSKI, 2000). The experiment was a completely randomized design in two factorial parameters tested: three oil types (soy oil (SO), linseed oil (LO) and freshwater fish residue oil (FRO)), combined or not with sesame oil (SEO), totalizing six treatments and four replications 24 cages, capacity of 0.70m3 (density of 251 fish m-3). The fish (mean weight 2.35g±0.62g and mean length 5.25cm±0.68cm) were fed with the experimental diets twice a day. After 75 days, the following parameters were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Fatty acids; Nutrition; Sesamin..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701274
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Sub-lethal concentrations of monocrotophos affect aggressive behavior of the fishes Astyanax altiparanae Garutti &amp; Britski (Teleostei, Characidae) and Oreochromis niloticus (Linnaeus) (Teleostei, Cichlidae) Zoologia
Cruz,André Luis da.
This study investigated the effects of sublethal concentrations of the pesticide monocrotophos (organophosphate) on the agonistic behavior of two fishes species, Astyanax altiparanae Garutti &amp; Britski, 2000 (lambari) and Oreochromis niloticus (Linnaeus, 1758) (Nile tilapia). Sublethal concentrations of the pesticide for the two species were determined and lambari was more resistant than Nile tilapia. The sublethal concentrations were smaller than 400 mgl-1 for lambari and 20 mgl-1 for Nile tilapia. The two species were tested in grouping conditions (triads) and isolation, under monocrotophos concentrations of 200 mgl-1 for lambari and 5 mgl-1 for Nile tilapia. The concentration decreased the aggressiveness in lambari, but in Nile tilapia an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Teleostei; Astyanax altiparanae; Oreochromis niloticus; Aggressive behavior; Organophosphate; Monocrotophos; Sub-lethal concentrations.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400018
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Variabilidade genética de duas populações de Astyanax altiparanae da bacia do alto rio Paraná. Repositório Alice
ZAGANINI, R. L.; HASHIMOTO, D. T.; PEREIRA, L. H. G.; OLIVEIRA, C.; FORESTI, F.; BORTOLOZZI, J.; PORTO-FORESTI, F..
O presente trabalho tem como objetivo caracterizar a estrutura genética de duas populações de A. altiparanae da bacia do alto rio Paraná (Paranapanema e Tietê) através da análise de 11 marcadores moleculares do tipo microssatélite.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Astyanax altiparanae; Variabilidade genética; Characidae; Peixe; Lambari de rabo amarelo; Variação genética.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/931957
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