|
|
|
| Registros recuperados: 1.256 | |
|
|
| Sales, Ila Monize Sousa; Oliveira, Jussara Damascena de; Santos, Fabelina Karollyne Silva dos; Feitoza, Lidiane de Lima; Sousa, João Marcelo de Castro e; Peron, Ana Paula. |
| The goal of the present study was to evaluate the cytotoxicity and genotoxicity of artificial synthetic flavoring agents Cookie and Tutti-frutti. To this end, root meristem cells of Allium cepa L. were exposed to these substances in exposure times of 24 and 48 hours using individual doses of 0.3; 0.6 and 0.9 mL and doses combined as follows: 0.3 mL + 0.3 mL; 0.6 mL and 0.9 mL + 0.6 mL + 0.9 mL. After applying the treatments, root meristems were fixed, hydrolyzed, stained and analyzed a total of 5,000 cells using an optical microscope to evaluate each dose and combined treatment. All three doses of Cookie flavoring and combined treatments significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flavorings; Cell division; Cell aberrations; Cytotoxicity; Genotoxicity flavorings; Cell division; Cell aberrations; Cytotoxicity; Genotoxicity. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/30751 |
| |
|
|
| Silva, Sara Iolanda Oliveira da; Santana, Gleuvânia Marques; Sales, Ila Monize Sousa; Sousa, João Marcelo de Castro e; Peron, Ana Paula. |
| This study aimed to examine the cytotoxicity and genotoxicity of synthetic flavorings, nature identical, Chocolate, Strawberry and Condensed Milk. This evaluation was performed in root meristem cells of Allium cepa L., in exposure times of 24 and 48 hours and using doses of 0.2; 0.4 and 0.6 mL, in combination, in which one of the three doses of a flavoring was combined with a different dose of one of the two other flavor additives studied. Roots were fixed in Carnoy’s solution, hydrolyzed in hydrochloric acid, stained with acetic orcein and then analyzed, under light microscopy, 5,000 cells for each treatment. For data analysis, it was used Chi-square test at 5%. All the treatments with combinations between the flavorings Chocolate/Strawberry and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aroma and flavor additives; Cytotoxicity; Genotoxicity A. cepa Citogenética. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/30475 |
| |
|
| |
|
| |
|
| |
|
|
| Salaro, Ana Lúcia; Campelo, Daniel Abreu Vasconcelos; Tavares, Mateus Moraes; Braga, Luiz Gustavo Tavares; Pontes, Marcelo Duarte; Zuanon, Jener Alexandre Sampaio. |
| Two experiments were performed. The first aimed to assess the tolerance of fingerlings Astyanax altiparanae to water salinity. Fish were exposed to salinity of 0, 3, 6, 9, 12 or 15 g NaCl L-1 for 96 hours. The fish mortality was 0%, in the levels of 0, 3 and 6 g L-1; 75% in the level of 9 g L-1and 100% at 12 and 15 g L-1 of common salt. The second experiment aimed to assess the parameters of water quality, mortality and blood glucose during transport. For this, A. altiparanae were stored in plastic bags at 22, 30 and 37 g of fish L-1 stocking densities and salinity of 0, 3, 6 and 9 g L-1, for. Fish showed similar mortality levels in the different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.06.03.04-3 density; Stress; Glucose; Oxygen; Common salt Piscicultura. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/26884 |
| |
|
| |
|
|
| Teixeira, Ana Paula; Silva, Paulo Fernandes Roges Souza; Souza, João Paulo Francisco de; Alves, Natália Lopes; Guimarães, Ariane; Carneiro, Fernanda Melo. |
| We performed a scientometry to validate trends in the scientific production on phytotelmata and the importance of these microenvironments in the maintenance of biodiversity. We searched for articles in the Web of Science and looked at publications from 1987 to 2016. We collected years of publication, surveyed organisms, countries where the surveys took place, plants that accumulate phytotelmata, scientific journals that publish more about the topic and their respective IFs (Impact Factor) and the keywords of each article. We built a heatmap using the most frequent keywords in the studies, to investigate the topics studied over the years. We have found 293 publications, increasing over the years. Insects, anurans and crustaceans were the most studied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromeliads; Scientometry; Insect-plant interaction; Tank plants; Microenvironments.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40994 |
| |
|
|
| Carneiro, Juliana de Souza; Universidade Estadual de Londrina; Vieira, Ana Odete Santos; Universidade Estadual de Londrina. |
| As trepadeiras são plantas com alta representatividade nas florestas tropicais e de grande importância ecológica, apontadas como um dos fatores básicos que diferencia florestas tropicais de temperadas. Este trabalho apresenta as espécies de trepadeiras da Estação Ecológica do Caiuá (EECAIUÁ), município de Diamante do Norte, Estado do Paraná, inserida na floresta estacional semidecidual (FES) submontana, situada à margem do rio Paranapanema. Foram encontradas 17 famílias, 44 gêneros e 53 espécies. As cinco famílias mais ricas em número de espécies perfazem juntas 57% do total encontrado. As trepadeiras herbáceas ocorrem em menor número quando comparadas às lianas, e quanto à estratégia utilizada para ascender, as volúveis são as mais diversas, seguidas... |
| Tipo: Composição florística |
Palavras-chave: 2.03.00.00-0 Diamante do Norte; Floresta estacional semidecidual; Liana 2.03.04.02-1 Diamante do Norte; Seasonal deciduous forest; Liana. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5892 |
| |
|
|
| Venâncio, Henrique; Bianchi, Renata Alexandre; Lobato, Thaís Oliveira Santos; Sampaio, Marcus Vinícius; Santos, Jean Carlos. |
| The establishment of invasive plants negatively affects natural environments. Invasive herbivores that attack weeds can be used as a form of biological control, but natural enemies of herbivores must be associated with this interaction to prevent the invasive phytophagous from become a local pest. We performed a greenhouse experiment to evaluate how the cotton aphid, Aphis gossypii, a ok and invasive herbivore, affects the performance of the weed Tithonia diversifolia, the Mexican sunflower. We also examined the relationship between the aphid and local natural enemies. Seedlings of T. diversifolia were divided in two groups: one infested by the aphid and another not infested. After 22 days, we assessed the relationship between aphid abundance and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tithonia diversifolia; Cotton aphid; Aphidius platensis; Coccinelidae; Biological control.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47120 |
| |
|
| |
|
| |
|
|
| Foppel, Ernesto Frederico da Costa; Instituto Mamíferos Aquáticos; Ferrari, Stephen Francis. |
| The Antillean manatee (Trichechus manatus) is the most threatened aquatic mammal in Brazil. It was considered to be extinct in Sergipe until 1998, when a re-introduced animal (Astro) arrived. Given plans for the re-introduction of more animals, a survey was conducted of the waterside communities of the animal’s home range, on the southern coast of Sergipe. Between March and November, 2009, 27 people were interviewed in 12 communities, using a 14-item questionnaire. All the interviewees knew Astro and were familiar with his behaviour. The primary source of tension between the animal and the community is its habit of approaching vessels and, in particular, fishing equipment. Some fishermen reported that he takes fish from their nets. While most local... |
|
Palavras-chave: 2.01.00.00-0 antillean manatee; Trichechus manatus; Sergipe behaviour; Conservation; Communities Biologia Geral. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10158 |
| |
|
| |
|
| |
|
| |
|
|
| Lacerda, Ana Carolina Figueiredo; UEM; Takemoto, Ricardo Massoto; UEM; Pavanelli, Gilberto Cezar; UEM - Maringá. |
| Uma nova espécie de Cladorchiidae (Trematoda, Digenea) foi encontrada no trato intestinal do peixe de água-doce “pacu peva”, Metynnis maculatus (Kner, 1858) na planície de inundação do Alto Rio Paraná, Brasil. A nova espécie foi classificada no gênero Dadayius Fukui, 1929 por apresentar testículos não lobados e acetábulo ventro-terminal com um “entalhe” postero-mediano na margem interior, características do gênero que possui apenas duas espécies conhecidas. Algumas características que diferem a espécie nova de D. marenzelleri (Daday, 1907) e D. pacuensis Thatcher, 1996 são cecos não alcançando o acetábulo, vitelária de extensão limitada e não atingindo o nível do testículo posterior e a presença de dois tamanhos diferentes de ovos em dois estágios de... |
|
Palavras-chave: 2.01.00.00-0 Biologia Geral Metynnis maculatus; Digenea; Dadayius; Planície de inundação do alto rio Paraná; Brasil 2.01.00.00-0 Biologia Geral. |
| Ano: 2003 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2044 |
| |
|
|
| Guidelli, Gislaine Marcolino; UEM; Takemoto, Ricardo Massato; UEM; Pavanelli, Gilberto Cezar; UEM. |
| Neste artigo é descrita uma nova espécie do gênero Kritskyia, K. eirasi n. sp., parasita da bexiga urinária e ureteres de Leporinus lacustris, “corró”, um peixe anostomídeo coletado na planície de inundação do Alto rio Paraná, Brasil. A nova espécie foi incluída no gênero devido ao sítio de infecção, à ausência de âncoras, barras e ganchos 4A e por possuir abertura da vagina na margem esquerda do corpo. Difere da espécie tipo, K. moraveci e das demais espécies conhecidas do gênero, principalmente na forma do complexo copulador. A peça acessória é distalmente complexa e serve como guia para o cirro. A base do órgão copulador masculino, como nas espécies congenéricas, é guarnecida com bordas esclerotizadas, porém K. eirasi n. sp. possui uma projeção alongada... |
|
Palavras-chave: 2.01.00.00-0 Biologia Geral Monogenea; Dactylogyridae; Kritskyia eirasi n. sp.; Leporinus lacustris; Rio Paraná; Brasil 2.01.00.00-0 Biologia Geral. |
| Ano: 2003 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2010 |
| |
|
|
| Guimarães, Aretha Franklin; Querido, Luciano Carramaschi de Alagão; Coelho, Polyanne Aparecida; Santos, Paola Ferreira; Santos, Rubens Manoel dos. |
| Serpentine soils are those holding at least of 70% iron-magnesium compounds, which make life intolerable for many species. Although plant's adaptation to environmental toughness is widely studied in tropics, virtually nothing is known about Brazilian serpentine flora. Our aim was to bring up and characterize the serpentine flora in Bom Sucesso, Minas Gerais state, Brazil. We performed expeditions utilizing rapid survey sampling method to identify the arboreal compound in the area. Plants within circumference at breast high (CBH) up to 15,7 cm were included in our study. A specialist identified all the individuals to species level. We found 246 species located in 59 botanical families. Fabaceae, Myrtaceae and Melastomataceae were the most representative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ultramafic vegetation; Trace elements; Heavy metals; Serpentine soil.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/44594 |
| |
|
| |
| Registros recuperados: 1.256 | |
|
|
|
