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	Provedor de dados Neotropical Ichthyology (6) Iheringia, Sér. Zool. (4) Anais da ABC (AABC) (3) Rev. Bras. Zool. (2) Biota Neotropica (2) BABT (1) Mais... Autor Benedito,Evanilde (18) Pazianoto,Laryssa H. R. (3) Alves,Gustavo Henrique Zaia (2) Espínola,Luis Alberto (2) Figueiredo,Bruno R. S. (2) Fiori,Leandro Fabrício (2) Garcia,Daniela Aparecida (2) Hauser,Marília (2) Message,Hugo José (2) Veronezzi,Ana Lúcia (2) Alves,Vander Silva (1) Bialetzki,Andréa (1) Cionek,Vivian de M. (1) Corbetta,Daiany de Fátima (1) Couto,Edivando Vitor do (1) Domingues,Wladimir M. (1) Dourado,Elãine Christine dos Santos (1) Espínola,Luis A. (1) Fogaça,Fábio N. O. (1) Frota,Augusto (1) Mais... Palavra-chave Condition factor (3) Food web (3) Stable isotopes (3) Calorimetry (2) Detritivorous fish (2) Energetic density (2) Energy (2) Fish (2) Gonadal maturation (2) Habitat (2) Altitudinal gradient (1) Aquatic ecosystems (1) Astronotus crassipinnis (1) Astyanax bimaculatus (1) Biodiversity loss (1) Biogeography (1) Biological invasions (1) Body size (1) Carbon sources (1) Coastal drainages (1) Mais... Tipo do documento Info:eu-repo/semantics/article (18) Ano 2019 (2) 2018 (2) 2016 (3) 2015 (1) 2014 (1) 2013 (1) 2012 (2) 2011 (1) 2010 (2) 2009 (1) 2008 (1) 2007 (1) Mais... País Brazil (18) Idioma Inglês (16) Espanhol (1) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 18 Primeira ... 1 ... Última Body condition and energy density of juvenile streaked prochilod Prochilodus lineatus (Valenciennes, 1837) in a Neotropical floodplain Neotropical Ichthyology Corbetta,Daiany de Fátima; Veronezzi,Ana Lúcia; Benedito,Evanilde. ABSTRACT Variations in energetic density (E D ) and the relative condition factor (K n ) of juveniles of Prochilodus lineatus were investigated to identify whether these two variables respond similarly to environmental factors. We hypothesized that fluviometric levels in different sub-basins of the Upper Paraná River floodplain positively influence the E D and K n of juvenile fish. Temporally, the values of E D and K n were linked more directly to the dynamics of the flood pulses on the plain. Spatially, the lowest values of E D and K n were observed in the environment that was directly affected by the operation of dams, the sub-basin Paraná. Although the energy density and condition factor did not show similar results for juveniles in some of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Condition Factor; Food web; Habitat; Impact; Paraná basin. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000400201 Caloric density of Loricariichthys platymetopon (Osteichthyes, Loricariidae) in the Upper Paraná River floodplain, Brazil BABT Garcia,Daniela Aparecida; Benedito,Evanilde; Takeda,Alice Michiyo. This study analyzed the muscle energy content (caloric density) of L. platymetopon captured at different sites of the Upper Paraná River floodplain, and potential relationships between the content and various environmental variables (water temperature, oxygen dissolved in water, food availability, relative numeric abundance) and biological variables (body size and reproductive cycle). Quarterly samplings from September 2006 to June 2007 in the lakes and rivers resulted in a sample of 739 specimens, whose muscle caloric density was determined using a calorimeter. Differences between the caloric averages of the males and females and among the different stages of gonadal development were not significant. Caloric density varied over time and space, with two... Tipo: Info:eu-repo/semantics/article Palavras-chave: Energy; Detritivorous fish; Direct calorimetry; Muscle; Floodplain. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500015 Difference in reproduction energy content in muscles on fish from reservoirs in Paraná State, Brazil Neotropical Ichthyology Espínola,Luis Alberto; Dourado,Elãine Christine dos Santos; Benedito,Evanilde. The variation in energy in the muscles of the most representative fish species from three Neotropical Reservoirs was investigated to determine the effect of the reproductive process on the amount of energy allocated and a possible relationship between the general welfare of the species and their caloric content. Significant differences were detected between the sexes and among the stages of gonad maturity. In general, the variation in energy in the muscles indicate to be a function of the reproductive cycle. In most examined species, females presented the highest caloric values, reflecting physiological differences in their use of energy, relative to the reproductive process. However, there was no significant correlation between caloric values and the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Calorimetry; Condition factor; Freshwater fish; Paraná River basin; Trophic groups. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400783 Divergence in energy sources for Prochilodus lineatus (Characiformes: Prochilodontidae) in Neotropical floodplains Neotropical Ichthyology Benedito,Evanilde; Santana,Ana Rute A.; Werth,Martin. ABSTRACT The stable carbon isotopic variability and the contributions of autochthonous (sediment microbial biomass, phytoplankton, and periphyton) and allochthonous (soil microbial biomass) sources available to the detritivorous fish Prochilodus lineatus were investigated in three environments of the floodplain of the Upper Paraná River. The isotopic composition of carbon sources and fish varied significantly among the studied environments. The autochthonous resources, represented by the phytoplankton, were the most assimilated by the species, followed by periphyton and sediment microbial biomass. The species used the sources differently in each environment. This study suggests that the inherent characteristics of this area, as well as the size of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic ecosystems; Carbon sources; Fish; Organic matter; Stable isotopes. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400204 Feeding and body condition of an invasive fish species under different environmental conditions Neotropical Ichthyology Pazianoto,Laryssa H. R.; Cionek,Vivian de M.; Fogaça,Fábio N. O.; Benedito,Evanilde. ABSTRACT Diet, energy density (ED) and relative condition factor (Kn ) were used to investigate the energetic assimilation of the invasive fish Hemiodus orthonops under different environmental condition of the upper rio Paraná floodplain. Samples were taken in June and September 2013 and 2014. Nutrient content was determined for sediment. The diet was combined in the Food Index (IAi%), ED was expressed in Kcal/g of dry weight and Kn was calculated by: Kn = Wt/We, where Wt is the total weight and We the expected weight. Detritus/sediment prevailed in the stomachs of specimens from Ivinhema and Baia, while Algae was the main item in Paraná, reflecting the resource availability. ED and Kn from Ivinhema specimens were the greatest, consequence of the quality... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological invasions; Detritivory; Energetic density; Hemiodus orthonops; Relative condition factor. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100225 Ichthyofauna of headwater streams from the rio Ribeira de Iguape basin, at the boundaries of the Ponta Grossa Arch, Paraná, Brazil Biota Neotropica Frota,Augusto; Message,Hugo José; Oliveira,Rachel Calil de; Benedito,Evanilde; Graça,Weferson Júnio da. Abstract: The rio Ribeira de Iguape basin (Paraná State) is highly relevant for the preservation of remnants of the Atlantic Forest. Its high levels of diversity and fish endemism explain the river dynamics promoted by the Ponta Grossa Arch, a geological structure that promotes headwater capture and isolation between the upper rio Paraná drainage, the rio Iguaçu and the rio Ribeira de Iguape. Here, our objective was to provide an unprecedented inventory for headwater streams of the rio Ribeira de Iguape basin at the boundaries of the Ponta Grossa Arch. We found 29 species of fish representing four orders and nine families. Siluriformes was the richest order followed by Characiformes. Nine species presented high abundance of sampled individuals,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Altitudinal gradient; Biogeography; Coastal drainages; Ichthyology; Invasion. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100307 Influence of feeding plasticity on the fitness of small Neotropical characids Iheringia, Sér. Zool. Fiori,Leandro Fabrício; Alves,Gustavo Henrique Zaia; Hahn,Norma Segatti; Benedito,Evanilde. Abstract This study investigated the diet of four characids [Hyphessobrycon eques (Steindachner, 1882), Odontostilbe pequira (Steindachner, 1882), Psellogrammus kennedyi (Eigenmann, 1903) and Serrapinnus calliurus (Boulenger, 1900) ] coexisting in two lagoons and checked for possible spatial differences and the influence on population fitness. The main goal was check if these species show better fitness according to the nutritional value of the food resource consumed. In this way, it is expected that the species show improved nutritional conditions (evidenced by the relative condition factor) when foraging for items of animal origin, and the reverse is expected when consuming items of plant origin and detritus. Sampling was conducted in August 2011. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fishes; Diet; Condition factor; Pantanal; Lagoons. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100206 Influência do ambiente no conteúdo calórico e na condição fisiológica de duas espécies migradoras de peixes neotropicais Iheringia, Sér. Zool. Pazianoto,Laryssa H. R.; Souza,Maíra L. S.; Veronezzi,Ana Lúcia; Benedito,Evanilde. O presente estudo teve por objetivo determinar o conteúdo calórico e fator de condição de uma espécie de peixe iliófaga e outra piscívora, na planície de inundação do alto rio Paraná, e suas possíveis diferenças sazonais e temporais. As espécies foram amostradas entre junho de 2010 e março de 2011 e, dos indivíduos que se apresentaram no estádio de desenvolvimento gonadal em repouso, extraíram-se músculos próximos à nadadeira dorsal, os quais foram enxaguados em água destilada, e secos a 60°C. Posteriormente, foram macerados e queimados em bomba calorimétrica. Em relação aos subsistemas, a densidade energética e o fator de condição apresentaram diferenças significativas apenas para Prochilodus lineatus (Valenciennes, 1837), com os maiores valores... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pseudoplatystoma corruscans; Prochilodus lineatus; Densidade energética; Fator de condição; Planície de inundação. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000300001 Invasive non-native species of fish in upper Paraná river Basin, Brazil: variations of caloric content in Cichla kelberi Neotropical Ichthyology Espínola,Luis Alberto; Júlio Junior,Horácio Ferreira; Benedito,Evanilde. The allocation of assimilated energy may be influenced by seasonal changes, growth, and reproductive cycle of fish, food consumption and environmental conditions. The objective of this research was to evaluate the energetic variations of Cichla kelberi in the upper Paraná River floodplain, analyzing the caloric content in muscles, gonadosomatic index (GSI), and the condition factor between assessed systems, sex, and stage of gonadal maturation. The results obtained in the present study permit assuring that this is a species that efficiently converts the resources of the environment into energy. Although presenting higher condition factor in the environment where there is a greater ease in getting food (Paraná subsystem), the energy identified in the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Condition factor; Energetic density; Gonadal maturation; Paraná and Baía Rivers. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200015 Isotopic niches of sympatric native and exotic fish species in a Neotropical floodplain Anais da ABC (AABC) Philippsen,Juliana S.; Hauser,Marília; Benedito,Evanilde. This study investigated the isotopic niches of two fish species, one exotic and one native. It was hypothesized that these species would show little or no isotopic niche overlap. This hypothesis was tested with the isotopic niche concept and the trophic Layman's metrics. A considerable isotopic niche overlap was observed between the species, mainly for the exotic that showed the greater percentage of overlapping, indicating an interspecific competition for food resources. Layman's metrics also showed this species probably exploits a more specific array of food resources when compared with the native species. The native species probably has the ability to exploit a wider array of resources, highlighted by the higher values given for the Layman's metrics.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Competition; Hoplias sp1; Hoplias sp2; Layman's metrics; Trophic interactions. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200825 Misguided policy may jeopardize a diverse South brazilian environmental protection area Biota Neotropica Alves,Gustavo Henrique Zaia; Santos,Regiane da Silva; Figueiredo,Bruno R. S.; Manetta,Gislaine Iachstel; Message,Hugo José; Pazianoto,Laryssa H. R.; Guimarães,Gilson Burigo; Benedito,Evanilde; Couto,Edivando Vitor do. Abstract: The Devonian Escarpment (DEEPA), located in the south of Brazil, represents an important area of environmental preservation composed by grasslands, gallery forests, as well as rock outcrops and archaeological sites. A law project (LP 527/2016), which suggests a reduction of the DEEPA area in approximately 70% of its original area (from 393,579 to 125,895 ha), is currently being processed in the Paraná State House of Representatives. Such reduction seems to be related to economic interests (mainly agriculture and mining) in the state of Paraná. If approved, LP 527/2016 will allow farmers to deliberately expand their activities, with the suppression of natural forest as main consequence. Additionally, loss of faunal diversity, contamination of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental law; Grassland; Devonian Escarpment; Biodiversity loss; Geodiversity. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100401 Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions Iheringia, Sér. Zool. Fiori,Leandro Fabrício; Figueiredo,Bruno R. S.; Pavanello,Audrei; Alves,Vander Silva; Mathias,Paulo Cezar de Freitas; Benedito,Evanilde. ABSTRACT Considering that the anti-predation behaviour of prey fishes may vary with predator hunting strategy, we experimentally investigated the physiological responses of Astyanax bimaculatus (Linnaeus, 1758) shoals to the presence of two piscivorous fish species with different hunting modes: sit-and-wait and active pursuit. In addition, we evaluated the influence of underwater visibility conditions on the interaction between predator and prey. We tested the hypotheses that: (i) prey plasma cortisol and glucose levels vary according to piscivore hunting strategy, and (ii) no reduction in plasma glucose and cortisol levels takes place in turbid environments due to the inability of prey to accurately recognise predators by non-visual signals. The results... Tipo: Info:eu-repo/semantics/article Palavras-chave: Metabolism; Hoplias aff. malabaricus; Astronotus crassipinnis; Astyanax bimaculatus; Turbidity. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100232 Spatial variation in the stable isotopes of 13C and 15N and trophic position of Leporinus friderici (Characiformes, Anostomidae) in Corumbá Reservoir, Brazil Anais da ABC (AABC) Pereira,Alexandre L.; Benedito,Evanilde; Sakuragui,Cássia M.. Stable isotopes of carbon (delta13C) and nitrogen (delta15N) were used to describe sources of energy and trophic position for adult Leporinus friderici in the area of the Corumbá Reservoir, Brazil. Samples were collected from April 1999 to March 2000. Spatial variations were not identified in the isotopic composition. The maximum and minimum contribution of C4 plants calculated integrating the variation of plants and fish were 47.7% and 2.4%, respectively. Among C3 plants, periphyton presented closer isotopic values to those observed for fishes, corresponding to an important carbon source. The proportion of ingested plant item is larger in rivers upstream from the reservoir (42.7%), which justifies the smaller trophic level among there. However, in the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Stable isotopes; Reservoir; Leporinus friderici; Food web. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100006 Species of the Hoplias aff malabaricus complex (Characiformes: Erythrinidae): An investigation of coexistence in a Neotropical floodplain Rev. Bras. Zool. Hauser,Marília; Benedito,Evanilde. This study assessed the coexistence of three species of thraira present in the Upper Paraná River floodplain, using population structure as an investigation tool. The species were designated as: Hoplias sp. 1, introduced after the construction of the Itaipu reservoir, and Hoplias sp. 2 and Hoplias sp. 3, native species that have been identified as Hoplias aff. malabaricus. We tested the hypothesis that those species in fact differ from each other in respect of population abundance, sex ratio, relative frequency of adults and juveniles, length structure and weight-length relationship. Additionally, possible effects of the flood pulse on the first four of these parameters were investigated. Samples were collected quarterly from March 2006 to December 2007... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dams; Flood pulse; Species introduction; Structure population; Thraira. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000100007 Variability in the trophic position of larval fishes in theupper Paraná floodplain based on δ15N Anais da ABC (AABC) Manetta,Gislaine I; Bialetzki,Andréa; Martinelli,Luiz A; Benedito,Evanilde. The upper Paraná River floodplain is composed of several marginal lagoons, making it a natural breeding ground for many fish species at developmental stages. The aim of this study is to estimate the trophic positions of these fishes based on feed intake (measured via diet) and nitrogen assimilation (measured via δ15N). The monthly samplings were concentrated during the spawning season in the Ivinheima River, which is located in the upper Paraná River floodplain. The specimens were grouped into preflexion, flexion and postflexion stages. Trophic positions were estimated based on the isotope value of nitrogen and on diet. During the developmental stages of P. squamosissimus, there were significant differences in the isotope values of δ15N; for H. edentatus,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Larval development; Trophic position; Δ15N. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200016 Variability of δ13C and δ15N in three zooplankton species from the Upper Paraná River floodplain Rev. Bras. Zool. Santana,Ana R. A.; Lansac-Tôha,Fabio Amodêo; Benedito,Evanilde. This study evaluated the isotopic composition of three zooplankton species - Notodiaptomus amazonicus (Wright, 1935), Moina minuta Hansen, 1899 and Bosmina hagmanni Stingelin, 1904 - from the Upper Paraná River floodplain. We predicted that there would be isotopic variability among species in the different sampled environments. Samplings were conducted in three lakes from the Baía subsystem and in two lakes from the Paraná subsystem. At each location, some abiotic variables were measured, and zooplankton (3 to 4) and phytoplankton (3) samples were taken. The species sampled did not present significant differences between subsystems; however, they were different among the lakes, with variations of about 10.8‰ for δ13C and 5.8‰ for δ15N. The isotopic values... Tipo: Info:eu-repo/semantics/article Palavras-chave: Food web; Limnology; Phytoplankton; Energy; Stable isotopes. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400017 Variaciones en el contenido de energía en músculos de Salminus brasiliensis en diferentes estados de desenvolvimiento gonadal en el área de influencia del reservatório de Manso, Mato Grosso, Brasil Iheringia, Sér. Zool. Espínola,Luis A.; Domingues,Wladimir M.; Benedito,Evanilde. Para que las medidas de conservación y manejo sean efectivas es necesario el entendimiento del origen y destino de la energía por las cuales compiten los organismos en los diferentes ambientes. Con la hipótesis de que existen diferencias en la energía contenida en los músculos durante el desenvolvimiento gonadal de Salminus brasiliensis (Cuvier, 1816), fueron realizadas colectas entre octubre de 2002 a septiembre de 2003, en el reservatório del río Manso. Después de la obtención de los datos biométricos, de cada individuo se tomaron muestras de la musculatura, las cuales fueron secadas a 60ºC y el contenido calórico (cal/g de peso seco) determinado en una bomba calorimétrica. Los valores del factor de condición y de la Relación Gónada Somática (RGS) fueron... Tipo: Info:eu-repo/semantics/article Palavras-chave: Contenido energético; Maduración gonadal; Salminus brasiliensis; Reservatório de Manso. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100018 Variation in energy density of Loricariichthys platymetopon (Siluriformes: Loricariidae) in the upper Paraná River basin Neotropical Ichthyology Garcia,Daniela Aparecida; Benedito,Evanilde. The present study described the variations in energy density from skeletal muscles of Loricariichthys platymetopon in relation to body size, sex, gonadal development stages, sampling site and habitat type (lotic, semi-lotic and lotic). Samplings were performed between June 2002 and August 2006 in points located in the upper Paraná River floodplain, Rosana Reservoir and Diamante Stream. The energy density from each muscle sample of 212 specimens was determined using an adiabatic calorimeter. The correlations between the variables 'muscle energy density' and 'specimen standard length' were not significant. Only in the Rosana Reservoir there was a significant difference in energetic means between 'sex'. Otherwise, due to the gonadal development stage, a... Tipo: Info:eu-repo/semantics/article Palavras-chave: Calorimetry; Detritivorous fish; Body size; Gonadal maturation; Habitat. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200010 Registros recuperados: 18 Primeira ... 1 ... Última

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