15 articles in this issue
Luis Vinatea, Walter Muedas, Rafael Arantes (Autor)
A simulation was conducted to determinate the impact caused by the combination of Litopenaeus vannamei respiratory rate (mg O2 shrimp-1 h-1), the behavior of SOTR (kg O2 h-1) of mechanical aerators as a function of salinity, as well as the oxygen consumpt... see more
José Ariévilo Gurgel Rodrigues, Edfranck de Sousa Oliveira Vanderlei, Ana Luíza Gomes Quinderé, Bruno Pedrosa Fontes, Ismael Nilo Lino de Queiroz, Norma Maria Barros Benevides (Autor)
The reportedly low standard quality of heparin (HEP) for use in cardiac surgeries has led to concern in the Brazilian and international markets. Sulfated polysaccharides (SPs) from seaweeds have been regarded as promising substitutes for HEP. The aim of t... see more
Fabiola Fernandes Galvão Rodrigues, Henrique Douglas Melo Coutinho, Adriana Rolim Campos, Sidney Gonçalo Lima, José Galberto Martins Costa (Autor)
The essential oil from the fresh leaves of Lippia microphylla Cham. was obtained by hydrodistillation and characterized by gas chromatography-mass spectrometry (GC-MS). Major constituents of the oil were 1.8-cineole (18.12%), ß-ocimene (15.20%), bicycloge... see more
Vitor Matheus Galdino Pereira, Raimundo Bemvindo Gomes, Marcelo Vinícius do Carmo e Sá (Autor)
The present work examined possible relationship between the Escherichia coli counts and the concentrations of free CO2, dissolved oxygen, reactive phosphorus, total ammonia, nitrite, pH, transparency and electric conductivity in water samples from the Lag... see more
Gustavo Henrique Zaia Alves, Raffael Marcos Tófoli, Gisele Caroline Novakowski, Norma Segatti Hahn (Autor)
This study investigated the feeding habits of Serrapinnus microdon and S. calliurus and possible seasonal differences (rainy and dry seasons) in the utilization of food. The fish were collected monthly in Cancela stream, in the basin of the Manso/Cuiabá r... see more
Janielly Carvalho Camargo, Luiz Felipe Machado Velho (Autor)
This study verified the existence of longitudinal patterns in species composition, richness, density and biomass of flagellate protozoan in tropical streams and investigated whether the possible zonation patterns are different between two periods of the y... see more
Fabio Marques Aprile (Autor)
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification. Bimonthly measurements of temperature and PAR radiatio... see more
Gisele Fernandes Bessa, Ludgero Cardoso Galli Vieira, Luis Mauricio Bini, Deusiano Florêncio dos Reis, Paula Benevides de Morais (Autor)
The goal of this study was to evaluate the concordance amongst three zooplankton groups (Rotifera, Cladocera, and Copepoda) and between the zooplankton groups and the environmental variables in the Luis Eduardo Magalhães reservoir, in the Mid-Tocantins Ri... see more
Matheus Oliveira Freita, Vinícius Abilhoa (Autor)
Foram investigadas as variações ontogênicas e sazonais na dieta de Etropus crossotus coletados na baía de Ubatuba-Enseada, Estado de Santa Catarina, Brasil. Redes de arrasto com porta foram utilizadas para as coletas mensais, e 60 exemplares foram coletad... see more
Silvia Patrícia Carraschi, Patrícia Cubo, Bárbara Lopes Schiavetti, Natália Sayuri Shiogiri, Claudinei da Cruz, Robinson Antonio Pitelli (Autor)
Os surfactantes são moléculas anfipáticas que reduzem a tensão superficial da água e fazem parte dos componentes inertes das formulações de produtos fitossanitários. Assim, os objetivos deste trabalho foram: estimar a concentração letal (CL(I)(50;96h)); c... see more
Huilquer Francisco Vogel, Rafael Metri, Claudio Henrique Zawadzki, Maurício Osvaldo Moura (Autor)
This study examined the structure and species richness of the avifauna in CEDETEG campus of Universidade Estadual do Centro-Oeste (Unicentro), in the urban area of Guarapuava, at Paraná State. Data were monthly taken from July 2006 to June 2007 using tran... see more
Angela Maria de Carvalho Maffia, Elias Silva, Laércio Antônio Gonçalves Jacovine (Autor)
This exploratory study had the objective of analyzing issues concerning environmental themes among students coming from four different areas of knowledge, at a public university in the State of Minas Gerais. By the use of drawings, the students’ environme... see more
Rodrigo de Souza Amaral, Emivaldo de Siqueira Filho, Leonardo Augusto Silva Coser, Umberto Euzebio (Autor)
This study aimed to evaluate the effects of temperature variation during incubation on testicular morphology of post-hatch chicks. We utilized 60 eggs incubated under different temperatures: Group 1 – 37.5°C; Group 2 – 39.5°C; and Group 3 – 34°C. Chicks w... see more
Fernanda Mafra Cajú, Gian Carlo D'Angelo Queiroz, Sandra Maria Torres, Bruno Mendes Tenório, Valdemiro Amaro Silva Júnior (Autor)
The Sertoli cell has fundamental importance to the development and maintenance of spermatogenesis, as well as it has a directly proportional numerical relationship to sperm production. The proliferative period of this cell in rats occurs between 13 days p... see more
Letícia Cucolo Karling, Sybelle Bellay, Ricardo Massato Takemoto, Gilberto Cezar Pavanelli (Autor)
Jainus piava n. sp. is described from the gills of Schizodon borellii (Boulenger, 1900) (Characiform), commonly named as piava from the upper Paraná River floodplain, Brazil. The new species differs from the other members of Jainus in the following featur... see more