15 articles in this issue
Viviane de Oliveira Felizardo, Eliane Aparecida de Andrade, Carlos Cicinato Vieira Melo, Luis David Solis Murgas, Rilke Tadeu Fonseca de Freitas, Estefânia de Souza Andrade (Autor)
This study determined the age and its correlation with biometric variables and reproductive indices of piapara Leporinus obtusidens caught at the Funil Reservoir. We caught 133 specimens between September 2006 and August 2007. Weight, total length, standa... see more
Daniele Bezerra Santos, Cibele Soares Pontes, Priscila Maria Oliveira Campos, Maria de Fátima Arruda (Autor)
Current research analyzed the behavioral activities of Macrobrachium rosenbergii and its preference for colored shelters in male monosex, female monosex and mixed culture. Ten shrimps m-2 were maintained in eight 250-L aquaria. Three artificial shelters, ... see more
Tatiane Mantovano, Rodrigo Leite Arrieira, Leilane Talita Fatoreto Schwind, Claudia Costa Bonecker, Fábio Amodêo Lansac-Tôha (Autor)
The construction of reservoirs imposes substantial impact on freshwater ecosystems and changes the ecological aspects of the lotic system downstream of dams. We hypothesized an increasing dissimilarity between communities in the sampling sites according t... see more
Viviane Bernardes dos Santos Miranda, Rosana Mazzoni (Autor)
Four samplings were carried out during the dry and rainy seasons in 2014, in two biotopes (plankton and aquatic macrophytes) to assess the composition and species richness of testate amoebae community in a coastal stream in the state of Rio de Janeiro, Br... see more
Jaquelini Oliveira Zeni, Ana Cláudia Santos, Fernando Rogério Carvalho (Autor)
The presence of different mesohabitats in freshwater systems can support higher local and regional fish richness. Thus, their suppression by dam-building represents a real threat to aquatic biodiversity. Our aims were: (1) to survey the fish fauna in two ... see more
Paulo de Freitas Lima, Mart Som Reis Sousa, André Ferreira Porfírio, Beatriz Soares Almeida, Rogério Herlon Furtado Freire, Sandra Tédde Santaella (Autor)
The Carlson’s (1977) Trophic State Index (TSI) is a widely employed tool to estimate the degree of eutrophication in a reservoir. In Brazil, the need of a classification system that would take into account regional characteristics employed adjusted indexe... see more
Luís Henrique de Aquino Moreira, Ricardo Massato Takemoto, Gilberto Cezar Pavanelli (Autor)
A parasitological study was conducted with 131 fishes belonging to the following species: Poecilia reticulata and Rhamdia quelen species. Samplings occurre d in tributaries streams of Pirapó River, located in the urban and rural area on the surround... see more
Ricardo Pablo Klein, Alexandre Somavilla, Andreas Köhler, Cristina Vargas Cademartori, Eduardo Dias Forneck (Autor)
Wasps, important agents for the control of insect population, have been scantily studied in the Brazilian State of Rio Grande do Sul. Current study investigates monthly variations of social wasps in microhabitats within a forest-agriculture mosaic. Sample... see more
Stefano Marco Cantone, Ana Eugênia de Carvalho Campos (Autor)
It was conducted a research, in urban areas, on the nesting habits and reproductive period of Pachycondyla striata, a species of ant that stings painfully. The study was motivated by the frequent reports of accidents in the city of São Paulo. The re... see more
Maria Elina Bichuette, Luiza Bertelli Simões, Diego Monteiro von Schimonsky, Jonas Eduardo Gallão (Autor)
Quadrat sampling is a method used for a long time in plant ecology studies but only recently it has been used with focus on fauna. For the cave fauna samplings, there are rare works applying this methodology. The present study compared the methods of quad... see more
Túlio Vinicius Paes Dantas, Adauto de Souza Ribeiro, Everardo Valadares de Sá Barretto Sampaio, Elcida de Lima Araújo (Autor)
Two models of post-disturbance regeneration of vegetation in areas of oligotrophic soils have been proposed for temperate regions. The first model is characterized by rapid recovery of the floristic composition, due to the fire resistance of plants; while... see more
Samarina Rodrigues Wlodarczyk, Fernanda Gaensly, Rossana Calegari-Santos, Flávia Deffert, Gildo Almeida da Silva, Tania Maria Bordin Bonfim (Autor)
The transformation of grape must into wine is a complex microbiological process and is the product of the combined action of several genera and species of yeasts, dominated in the intermediate and final stages of fermentation by an alcohol-tolerant Saccha... see more
Edison Sanfelice André, Rafael Bruno-Neto, Angela Cristina do Valle, César Timo-Iaria (Autor)
Possible interactions between the sleep-wakefulness cycle and a new kind of spontaneous epilepsy, expressed as absence-like seizures and spike-wave bursts in FMUSP rats, are evaluated. The electro-oscillograms of some cortical and subcortical regions of t... see more
Willian Adriano Lira Lopes, Luiz Antonio de Souza (Autor)
Serjania communis Cambess. (Sapindaceae) is a plant with climbing habit and occurs relatively often in Paraná State, Brazil. The fruits were collected at the 'Parque dos Pioneiros' a remnant of subtropical forest in Maringá, Paraná State, Brazil. The seed... see more
Selma Freire de Brito, Charles Lobo Pinheiro, Francisco Carlos Barboza Nogueira, Sebastião Medeiros Filho, Dalva Maria da Silva Matos (Autor)
The invasion by Cryptostegia madagascariensis causes economic and environmental problems in Northeastern Brazil. Current study evaluates the initial growth of C. madagascariensis on light gradient. The experiment used 0, 30, 50 and 70% shading treatments ... see more