Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 12
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Alimentação de peixes piscívoros antes e após a formação do reservatório de Salto Caxias, Paraná, Brasil Biota Neotropica
Novakowski,Gisele Caroline; Hahn,Norma Segatti; Fugi,Rosemara.
Este trabalho investigou padrões alimentares de peixes piscívoros antes e após a formação do reservatório de Salto Caxias, Paraná, Brasil, com base em estudos da dieta de Hoplias malabaricus, Oligosarcus longirostris, Rhamdia branneri e Rhamdia voulezi, e da disponibilidade de presas. As coletas foram realizadas mensalmente no período de março de 1997 a fevereiro de 1998 (pré-represamento) e de março de 2000 a fevereiro de 2001 (pós-represamento), no local do reservatório. Foram analisados 549 conteúdos estomacais e a composição da dieta foi descrita através das porcentagens de ocorrência e volume de cada item alimentar, as quais foram combinadas por um índice alimentar. O hábito piscívoro foi, em geral, mais evidente para H. malabaricus, O. longirostris e...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dieta; Piscivoria; Oportunismo trófico; Reservatório neotropical; Brasil.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200017
Imagem não selecionada

Imprime registro no formato completo
Alterations on piscivorous diet following change in abundance of prey after impoundment in a Neotropical river Neotropical Ichthyology
Cantanhêde,Geuza; Hahn,Norma Segatti; Fugi,Rosemara; Gubiani,Éder André.
The goal of this study was to investigate the alterations of diet of a piscivorous fish (Acestrorhynchus pantaneiro) following changes in abundance of a forage fish (Moenkhausia dichroura) during the trophic upsurge stage in a reservoir. Fish samplings were taken monthly in the Manso Reservoir (State of Mato Grosso, Brazil) from March 2000 to February 2001 (period I) and from March 2003 to February 2004 (period II). The abundance of Moenkhausia dichroura in the reservoir was significantly different in both periods, representing 9.6% of the individuals in period I and 66.4% in period II. Stomach contents analyses showed that the number of prey species consumed by A. pantaneiro decreased from 41 prey in period I to 14 in period II. In the last period M....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acestrorhynchus pantaneiro; Moenkhausia dichroura; Prey-predator relationship; Reservoir.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400011
Imagem não selecionada

Imprime registro no formato completo
Conservation status and bio-ecology of Brycon orbignyanus (Characiformes: Bryconidae), an endemic fish species from the Paraná River basin (Brazil) threatened with extinction Neotropical Ichthyology
Tonella,Lívia Helena; Dias,Rosa Maria; Vitorino Junior,Oscar Barroso; Fugi,Rosemara; Agostinho,Angelo Antonio.
ABSTRACT Brycon orbignyanus is an endemic species from La Plata basin whose stocks have been presenting significant reductions throughout the Paraná River. Brycon orbignyanus is categorized as an endangered species. This study evaluated aspects of the bio-ecology of this species that may be related to this threat, highlighting its distribution, abundance, and diet as well as the corresponding relationships between its recruitment and flood regimes. Data were obtained from different parts of the upper Paraná River (stretches free and regulated by dams) from 1986 to 2010 with more detailed data collected from the free remnant of this basin. The results indicate that no records for species exist at more than half of the sampling points located in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dam; Diet; Floodplain; Ontogeny; Recruitment.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000300207
Imagem não selecionada

Imprime registro no formato completo
Diet and dental development of three species of Roeboides (Characiformes: Characidae) Neotropical Ichthyology
Novakowski,Gisele Caroline; Fugi,Rosemara; Hahn,Norma Segatti.
Lepidophagy has been recorded in various species of Roeboides. In this study we analyzed ontogenetic variation in diet and dental development of three Roeboides species (R. paranensis, R. prognathus and R. microlepis). Roeboides paranensis consumed mainly insects, scales and microcrustaceans, and the smaller individuals (<3.4 cm - SL) consumed mostly insects. Scale were only consumed by individuals greater than 3.4 cm. Scales were the dominant item in the diet in all sizes of R. prognathus. The diet of R. microlepis was composed primarily of whole fishes, however, the smaller individuals (<5.4 cm) consumed only insects. During ontogeny, exterior migration of teeth in the mouth started at 3.7 cm in R. paranensis and 6.5 cm in R. microlepis. As body...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Roeboides; Lepidophagy; Freshwater; Reservoir.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300008
Imagem não selecionada

Imprime registro no formato completo
Diet seasonality and food overlap of the fish assemblage in a pantanal pond Neotropical Ichthyology
Novakowski,Gisele Caroline; Hahn,Norma Segatti; Fugi,Rosemara.
We assessed the trophic structure of the fish fauna in Sinhá Mariana pond, Mato Grosso State, from March 2000 to February 2001. The aim was to determine the feeding patterns of the fish species during the rainy and dry seasons. The diets of 26 species (1,294 stomach contents) were determined by the volumetric method. Insects and fish were the most important food resources: insects were the dominant food of 23% and 27% of the species, respectively, in the rainy and dry season, and fish was the dominant item for 31% of the species in both seasons. Cluster analysis (Euclidean Distance) identified seven trophic guilds in the rainy season (detritivores, herbivores, insectivores, lepidophages, omnivores, piscivores and planktivores), and five trophic guilds in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fishes; Feeding overlap; Seasonal analysis; Pond.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400004
Imagem não selecionada

Imprime registro no formato completo
Dieta de espécies de Anostomidae (Teleostei, Characiformes) na área de influência do reservatório de Manso, Mato Grosso, Brasil Iheringia, Sér. Zool.
Balassa,Graziela Custodio; Fugi,Rosemara; Hahn,Norma Segatti; Galina,André Beal.
The diet of four species of Anostomidae (Leporinus friderici Bloch, 1794, L. striatus Kner, 1858, L. elongatus Valenciennes, 1849 and Leporinus sp.) were investigated in the Manso Reservoir, Mato Grosso State, Brazil. Fish were sampled in three sites: upriver, in the main body of the reservoir, and below the dam. Were analized 276 stomachs. The diet was evaluated using the frequency of ocorrence and volumetric methods. Leporinus friderici showed tendency to herbivory, mainly in the upriver site. In the reservoir and below the dam, it consumed large quantities of fish; Isoptera only in the reservoir. Leporinus striatus and L. elongatus have similar diets, consuming Chironomidae larvae (Diptera), whereas Leporinus sp. was more generalist, feeding similar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leporinus; Diet; Manso Reservoir.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100014
Imagem não selecionada

Imprime registro no formato completo
Ecologia alimentar da corvina, Pachyurus bonariensis (Perciformes, Sciaenidae) em duas baías do Pantanal, Mato Grosso, Brasil Iheringia, Sér. Zool.
Fugi,Rosemara; Hahn,Norma S.; Novakowski,Gisele C.; Balassa,Graziela C..
Foi investigada a dieta de Pachyurus bonariensis Steindachner, 1879 associando-a à variações espaciais, temporais e ontogenéticas. Os peixes foram coletados mensalmente de março/2000 a fevereiro/2001 e de agosto/2002 a fevereiro/2003 em duas baías do Pantanal, Chacororé e Sinhá Mariana. Conteúdos estomacais de 359 exemplares foram analisados através dos métodos de freqüência de ocorrência e volumétrico. A dieta foi composta essencialmente por larvas bentônicas de Chironomidae e Ephemeroptera, independente do local e período (seca e cheia) analisados. Entretanto, nota-se marcante diferença na composição alimentar de acordo com o tamanho do peixe. Os menores exemplares (comprimento padrão = 1,6 a 7,2 cm) consumiram preferencialmente Chironomidae e os maiores...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alimentação; Peixes; Baías; Pantanal.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000300020
Imagem não selecionada

Imprime registro no formato completo
Effects of flood regime on the diet of Triportheus curtus (Garman, 1890) in an Amazonian floodplain lake Neotropical Ichthyology
Pereira,Jardely de Oliveira; Silva,Maralina Torres da; Vieira,Lisandro Juno Soares; Fugi,Rosemara.
We analyzed the diet of Triportheus curtus in Lake Amapá on the Acre River (AC - Brazil), during three distinct phases of the hydrological cycle (pre-flooding, flooding, and post-flooding stages). The flooding occurred between January and June of 2009. Samples were collected monthly from October 2008 through September 2009. After collection (at 19:00, 01:00, 07:00, and 13:00 hs) and taxonomic identification, fish were eviscerated and their stomachs preserved in a 4% formalin solution for later analysis. The diet was evaluated by the Index of Relative Importance (IRI), and temporal variations (pre-flooding, flooding, and post-flooding) in the diet were summarized by an ordination technique (DCA). The diet of T. curtus was comprised of several orders of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acre River; Feeding plasticity; Opportunist; Seasonality; Triportheinae.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300015
Imagem não selecionada

Imprime registro no formato completo
Food spectrum and trophic structure of the ichthyofauna of Corumbá reservoir, Paraná river Basin, Brazil Neotropical Ichthyology
Luz-Agostinho,Karla D. G.; Bini,Luis M.; Fugi,Rosemara; Agostinho,Angelo A.; Júlio Jr.,Horácio F..
In this paper we evaluate plasticity of fish concerning diet. We expect that sampling over a large temporal and spatial scale, including environmental changes such as impoundments, will allow us to cover most of the diet plasticity. We also evaluate the efficacy of ordination method in discriminating trophic groups based on fish species diet. Data were obtained from 17 sampling stations sampled monthly from March/96 to February/99 in the Corumbá river drainage, before and after the formation of the Corumba reservoir. Diet was determined analysing 9,177 stomach contents from 64 fish species. Trophic categories were discriminated by a non-hierarchic grouping analysis named k-means, applied to diet data. Most of the species presented great trophic plasticity,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish diet; Feeding plasticity; Resources availablility.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100005
Imagem não selecionada

Imprime registro no formato completo
Importance of allochthonous resources in the diet ofAstyanax aff. fasciatus (Osteichthyes: Characidae) in streams: a longitudinal approach Biota Neotropica
Silva,Marlene R.; Fugi,Rosemara; Carniatto,Natália; Ganassin,Maria Júlia M..
The aim of this investigation was to respond the following question: is the consumption of allochthonous resources by Astyanax aff.fasciatus influenced by the longitudinal gradient in streams? To respond this question we sampled fish in the headwater, middle and mouth stretches of four streams (Upper Paraná River basin). Samplings were carried out from July 2007 to June 2008 using electrical fishing. Fish were identified, measured and their stomach contents identified and quantified. Spatial variations (among longitudinal stretches) in the diet were summarized using a principal coordinate analysis (PCoA). Spatial differences in the diet were tested with a multiresponse permutation procedure (MRPP). Allochthonous resources had the highest percentage of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Feeding resources; Terrestrial subsidies; Pirapó River; Paraná River.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300113
Imagem não selecionada

Imprime registro no formato completo
Spatial, seasonal and ontogenetic changes in food resource use by a piscivore fish in two Pantanal lagoons, Brazil Neotropical Ichthyology
Gimenes,Michele de Faveri; Fugi,Rosemara; Isaac,Andréia; Silva,Marlene Rodrigues da.
We evaluated the factors that affect the food resource use by Plagioscion ternetzi using three approaches: spatial, seasonal, and ontogenetic changes. Fish were sampled between March 2000 and February 2001 and March 2003 and February 2004 in the Sinhá Mariana and Chacororé lagoons, wetlands of the Pantanal Matogrossense. Fish was the predominant food in the diet, but shrimps and insects have been also consumed. The diet of P. ternetzi was significantly different between lagoons, but no difference was detected between dry and flood periods. In Sinhá Mariana lagoon, the diet mainly consisted of Psectrogaster curviventris, in both periods. In the flood period in Chacororé lagoon, fish was the dominant food (especially Astyanax spp., Leporinus spp. and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chacororé lagoon; Diet; Plagioscion ternetzi; Sciaenidae; Sinhá Mariana lagoon.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100163
Imagem não selecionada

Imprime registro no formato completo
The coexistence of endemic species of Astyanax(Teleostei: Characidae) is propitiated by ecomorphological and trophic variations Biota Neotropica
Mise,Fabio Teruo; Fugi,Rosemara; Pagotto,João Paulo Alves; Goulart,Erivelto.
The aim of the present study was to evaluate factors that may favor the coexistence of three endemic species of Astyanax (Astyanax bifasciatus,Astyanax minor and Astyanax gymnodontus) in Segredo Reservoir (Iguaçu River, Paraná State, Brazil), and to test the hypothesis that these species share food resources, being the dietary variations related to morphological characteristics. Fish were collected at three samplings sites in 1993 and 1994, during the first year after the filling phase of the reservoir. The diet was assessed using stomach content analysis and ecomorphology by ecomorphological indices. Diet and ecomorphology data were ordinated by multivariate techniques (DCA and PCA, respectively), aiming to characterize trophic guilds and identify...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Resource partitioning; Ecomorphological divergence; Iguaçu River; Segredo reservoir.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300021
Registros recuperados: 12
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional