15 articles in this issue
Raycon Roberto Freitas Garcia, Ana Carina Nogueira Vasconcelos, Jayme Aparecido Povh, Janessa Sampaio de Abreu Ribeiro, Lidiane Raquel Eloy, Danilo Pedro Streit Junior (Autor)
The migratory species piabanha does not reproduce in lentic environments since it requires environmental stimuli for the maturation and extrusion of gametes, and therefore hormonal induction is mandatory. Current study compares the seminal characteristics... see more
Hugo Teixeira Gomes, Patrícia Monah Cunha Bartos, Aline Elita Martins, Sharrine Omari Domingues Oliveira, Jonny Everson Scherwinski-Pereira (Autor)
Species of the genus Mentha produce essential oils which are widely used in pharmaceutical and cosmetic industries. Current study evaluates the potential for in vitro propagation and estimates mass production of plantlets of Mentha species. Nine species (... see more
Nicole Caldas Pan, Josiane Alessandra Vignoli, Cristiani Baldo, Hanny Cristina Braga Pereira, Rui Sérgio dos Santos Ferreira Silva, Maria Antonia Pedrine Colabone Celligoi (Autor)
The production of hyaluronic acid by Streptococcus zooepidemicus ATCC 39920 with varying rates of pH (6.0, 7.0, 8.0), temperature (34; 37; 40°C), agitation (100, 150, 200 rpm), glucose (10, 20, 30 g L-1) and yeast extract concentration (10, 20, 30 g L-1) ... see more
Marcelo de Jesus Veiga Carim, José Renan da Silva Guimarães, Luciedi de Cássia Leôncio Tostes, Luís Roberto Takiyama, Florian Wittmann (Autor)
This study aims to evaluate the phytosociology and floristic composition of tree species in the eastern Amazon, at the Iratapuru River Sustainable Development Reserve (RDS), State of Amapá. Fouteen quarters with dimensions of 100 m x 100 m were randomly i... see more
Carina Moresco, Éder André Gubiani, Liliana Rodrigues (Autor)
Urbanization and agriculture alter expressively the physical and chemical variables of lotic habitats, especially streams, causing negative effects to the biota of these environments. This study aimed to (i) evaluate the spatial and seasonal variations in... see more
Débora Reis de Carvalho, Ruanny Casarim, Rafaela Bastos Pereira, Paulo Santos Pompeu (Autor)
This work aimed to evaluate the relationship between parameters of fish communities and the habitat structure of a stream. Twenty three stretches six meters long were evaluated in the Samambaia stream located inside the Sumidouro Park, Rio das Velhas basi... see more
João Ânderson Fulan, Marcelo Rodrigues dos Anjos (Autor)
Few studies have investigated the colonization of macroinvertebrates during macrophyte decomposition. The goal of this work was to study the colonization process of Chironomidae larvae during the decomposition of Eichhornia azurea in a lake in the souther... see more
Luciano Seraphim Gasques, Sônia Maria Alves Pinto Prioli, Alberto José Prioli, Daniela Dib Gonçalves, Thomaz Manzini Carrenho Fabrin (Autor)
Peacock bass, a fish of the genus Cichla, is an exotic species from the upper river Paraná floodplain in which the species Cichla kelberi and C. piquiti have been confirmed, coupled to the specie C. monoculus upstream in the Capivara and Taquaruçu dams. T... see more
Gleice Ribeiro Orasmo, Sandra Aparecida Oliveira-Collet, Claudete Aparecida Mangolin, Ana Silvia Lapenta, Maria de Fátima Pires da Silva Machado (Autor)
Current analysis characterizes the effect of different fungicides often applied for pest control on a-and b-esterase patterns of four economically important table-wine grape cultivars (Italia, Rubi, Benitaka and Brasil) of Vitis vinifera. The a- and b-est... see more
Marysa de Kássia Guedes Soares, Bruna Coelho Facundes, Aloísio Freitas Chagas Júnior, Ezequiel Marcelino da Silva (Autor)
Current study assesses the biodiversity and selects lipase-producer microorganisms with industrial interest, from the savannah of the state of Tocantins, Brazil. Seventeen pequi microorganisms (Caryocar brasiliense) were isolated in the decomposition stag... see more
Priscila Boneventi, José Eduardo Baroneza, Camila Queiroz Moreira, Debora Cristina D. Meirelles dos Santos, Maria José Sparça Salles (Autor)
Farm workers at Brazilian tobacco plantations are frequently exposed to toxic chemicals and eventually became contaminated with these products. Flumetralin is a inhibitor of axillary bud growth on tobacco and the effects of gestational exposure should be ... see more
Larissa Silva Souza, Cátia Ionara Santos Lucas, Pâmela de Jesus Conceição, Joana Fidelis da Paixão, Rogério Marcos de Oliveira Alves (Autor)
Regional-level studies of floral resources used by social bees for honey production can contribute to the improvement of management strategies for bee pastures and colonies, by identifying the most visited flowers and thus characterizing the various geogr... see more
Alessandra Vargas de Carvalho, Irina Lübeck, Mariana Balhego da Rocha, Camila Martins Güez, Michel Mansur Machado, Luís Flávio Souza de Oliveira (Autor)
Current analysis investigated the tickcide effects of the aqueous extract and chloroform fractions of Ruta graveolens L. (rue) on engorged females of Rhipicephalus microplus, as well as their genotoxic and mutagenic effects on human leukocytes. The best t... see more
Maria de Fátima Souza Guilherme, Habyhabanne Maia Oliveira, Edevaldo da Silva (Autor)
Cadmium toxicity in seed germination and seedling growth of wheat (Triticum aestivum, var. IAC-370) is assessed. The ecotoxicological effects of six experimental concentrations of cadmium (0.03; 0.06; 0.12; 0.6; 1.2; 2.4; 4.8 mM), and control were evaluat... see more
Michelli Fernandes Batista, Luciane da Silva Santos, Rafael Hespanhol Muller, Luiz Antonio de Souza (Autor)
Studies on seed structure of Asteraceae have received little attention of botanists. Seed structure in Asteraceae is analyzed to evaluate the usefulness of characters in the separation of species through the analysis of nine weedy species. Seeds originate... see more