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| Santos, Alcione Eneida; Pedreira, Marcelo Mattos; Santos, Thais Garcia; Moura, Guilherme de Souza; Santos, José Claudio Epaminondas dos; Silva, Robson Campos. |
| The development of the digestive system in larvae of the Neotropical fish P. argenteus was analyzed histologically. On the 3rd day after hatching, the digestive system comprised oropharyngeal cavity, esophagus and simple undifferentiated tube. Since secreting cells, positive to Alcian Blue (AB), were found in the esophagus, digestive activity in the initial phase had occurred. On the 18 and 28th days after hatching, the esophagus was positive for AB and Periodic Acid Schiff (PAS) stain. The stomach was fully differentiated, with the cardiac, fundic and pyloric regions. Different regions of the epithelium were characterized by basic and acidic secreting cells (AB and PAS positive). On the 18 and 28th days after hatching, the intestine was long, coiled and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias; Zootecnia Aquicultura; Ciências Biológicas; Morfologia; Biologia Celular digestion capacity; Larval development; Prochilodus; Secreting cells. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28824 |
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| Pontara, Vanessa; Bueno, Marcelo Leandro; Scremin-Dias, Edna. |
| The aim of this study was to analyze the effect of flooding in Triplaris gardneriana Wedd, cultivated in drained soil (control) and in flooded condition. The experiment was developed in a greenhouse, using plants with 90 days after the emergency. The response to treatment was evaluated at 0, 30, 60 and 90 days. Growth measurements were made, such as biomass allocation, relative growth rate (RGR). Adventitious roots were not measured only observed, as well as the development of hypertrophied lenticels. The RGR was continuously reduced along the 90 days in flooding conditions for the roots, stem and leaves, compared to control. The flooding of the substrate caused alterations such as: increasing of the cortex width and diameter of the central cylinder of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas; Botânica Pantanal; Hypoxia; RGR; Flooding Botânica. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31267 |
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| Bandeira, Juliana Magalhães; UFPel; Bianchi, Valmor João; UFPel; Rubin, Sílvia; UFPel; Peters, José Antonio; UFPel; Braga, Eugenia Jacira Bolacel; UFPel. |
| The Plectranthus genus comprises several species generally referred to as boldo, which are highly used in popular medicine due to their anti-dyspeptic, analgesic and digestion-stimulating properties. The amount of natural active principles can vary greatly in the related genotypes, which may lead to the inappropriate use of these plants. This work aimed to analyze the interspecific diversity among four species of the Plectranthus genus (P. grandis, P. barbatus, P. neochilus and P. amboinicus) and the intraspecific diversity of P. barbatus collected from different places in southern Brazil, by means of the RAPD technique. A higher genetic similarity was observed between the P. neochilus and P. amboinicus species (80%), followed by P. grandis and P. barbatus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RAPD; Boldo; Genetic diversity; Medicinal plants Botânica; Genética Vegetal; Genética Molecular e de Microrganismos; Ciências Biológicas. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/880 |
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| Machado, Nadja Gomes; Sanches, Luciana; Aquino, Aryadne Márcia; Silva, Ludymilla Barboza da; Novais, Jonathan Willian Zangeski; Biudes, Marcelo Sacardi. |
| The Pantanal is the largest wetland in the world, characterized by high biodiversity, but large areas have been invaded by Vochysia divergens, a flood-adapted pioneer and native tree of the riparian forest and Brazilian Savanna. Seasonality in rainfall causes annual rhythms in the tree’s physiology, in which climatic stress factors induce a cambial dormancy in trees and, in consequence, growth zones in the trunk. Current analysis evaluates the seasonal variation of the diameter increase of V. divergens specimens in a seasonal floodable forest of the Northern Brazilian Pantanal. Field sampling was conducted between January and December 2012. Air temperature, relative humidity and precipitation were measured at a micrometeorological station, water level was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas; Ecologia diametric increment; Dendrometric bands; Climate-growth relation; Phenology; Cambará Botânica. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24330 |
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| Corrêa, Paulo Roberto Ceridório; UEL; Pinto, Artur da Silveira; UFMG; Silva, Grácia Divina de Fátima; UFMG; Vieira Filho, Sidney Augusto; UFOP; Duarte, Lucienir Pains; UFMG; Yamada-Ogatta, Sueli Fumie; UEL. |
| The effect of 2-pyridinecarboxylic acid (picolinic acid) on trypanosomes of the subgenus Schizotrypanum isolated from the bat Phyllostomus hastatus was determined in this study. Picolinic acid, at 50 µg mL-1, inhibited epimastigote growth by 99% after 12 days incubation. In addition, trypomastigote motility decreased by 50% after 6h and completely after 24h in the presence of 50 µg mL-1 picolinic acid. The 50% cytotoxic concentration on HEp-2 cell line was 275 µg mL-1 after 4 days incubation. Altogether, these results indicate higher toxicity against trypanosomes. The inhibitory effect of picolinic acid on epimastigote growth can be partially reversed by nicotinic acid and L-tryptophan, suggesting a competitive inhibition.... |
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Palavras-chave: Ciências Biológicas; Microbiologia; 2.12.02.00-1 bat trypanosome; Schizotrypanum; 2-pyridinecarboxylic acid; Antimicrobial activity Atividade antimicrobiana bat trypanosome; Schizotrypanum; 2-pyridinecarboxylic acid; Antimicrobial activity. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6482 |
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| Ferraz, Alex Soares Marreiros; Moraes, Ruan Carlos Macêdo de; Sá, Naiza Arcângela Ribeiro de; Andrade, Francisco Teixeira; Martins, Maria do Carmo de Carvalho e; Ceccatto, Vânia Marilande. |
| In this study, we tested the use of murinometric indices and bioimpedance (BIA) to determine obesity in rats. Female Wistar rats (8 weeks/130-160 g) were divided into control and oophorectomy group. The Body Mass Index (BMI) and Lee index (LI) were used as anthropometric techniques to determine obesity, and the determination of body composition by BIA, as a way to partition body weight into fat mass and lean mass components. The dissection of muscle tissues and adipose deposits was used as a direct determination of body fat content. The groups had body weight gain (p <0.05) after the trial period, with a differential gain in body fat (p <0.05) observed by the dissection of tissue in the oophorectomy group. This gain in body fat was detected more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Biológicas; Morfologia; Anatomia body composition; Bioimpedance; Anthropometry; Menopause Morfologia. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/31714 |
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