|
|
|
| Registros recuperados: 61 | |
|
| |
|
| |
|
|
| Nunes,Endson S.; Brown,Judith K.; Moreira,Adriana G.; Watson,Gillian; Lourenção,André L.; Piedade,Sônia M.S.; Rezende,Jorge A. M.; Vieira,Maria L.C.. |
| This note is the first report of Bemisia tabaci (Gennadius) biotype B colonizing passionvine in Brazil. We examined the colonization of nine Passiflora species by a wild B type population under greenhouse conditions. P. amethystina Mikan was the most preferred species for oviposition and colonization, whereas P. suberosa L., P. coriacea Juss. and two commercially cultivated species, P. alata Curtis and P. edulis Sims f. flavicarpa Degener, were mostly uncolonised. P. morifolia Mast., P. cincinnata Mast., P. foetida L. and P. caerulea L. showed intermediate levels of colonization. Such differential colonization might suggest some degree of resistance by certain Passiflora species or oviposition preference by B. tabaci. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passifloraceae; Begomovirus; Colonization. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600021 |
| |
|
|
| Medeiros,Estevão Rodrigues; Pelicice,Fernando Mayer; Agostinho,Carlos Sergio; Marques,Elineide Eugênio. |
| The present study investigated energy allocation patterns in three fish species from the family Hemiodontidae (Argonectes robertsi, Hemiodus microlepis, and Hemiodus unimaculatus), before and after the construction of Lajeado Dam, Tocantins River, Amazon basin. Changes in the use of energy (between somatic and reproductive processes) were indirectly evaluated by means of temporal variations in fish body condition, feeding activity, visceral fat storage, and reproductive effort. Fish were collected from October 1999 to September 2004, in periods that preceded and followed the construction of the dam. We recorded significant changes in all ecological traits for the three analyzed species (for males and females). In general, there was an intense reduction in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body condition; Colonization; Fitness; Reproduction; River regulation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300649 |
| |
|
| |
|
|
| Verschuere, L.; Rombaut, G.; Huys, G.; Dhont, J.; Sorgeloos, P.; Verstraete, W.. |
| The use of juvenile <i>Artemia</i> as feed in aquaculture and in the pet shop industry has been getting more attention during the last decade. In this study, the use of selected bacterial strains to improve the nutritional value of dry food for <i>Artemia</i> juveniles and to obtain control of the associated microbial community was examined. Nine bacterial strains were selected based on their positive effects on survival and/or growth of <i>Artemia</i> juveniles under monoxenic culture conditions, while other strains caused no significant effect, significantly lower rates of survival and/or growth, or even total mortality of the <i>Artemia</i> . The nine selected strains were used to preemptively colonize the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture; Biological control; Brine shrimp culture; Chemotaxonomy; Colonization; Feeds; Interspecific relationships; Nutrition; Polyculture; Survival; Artemia. |
| Ano: 1999 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4039 |
| |
|
|
| Vasconcelos,Marcelo Ferreira de; Dutra,Eduardo de Carvalho; Mazzoni,Luiz Gabriel; Pedroso,Letícia Ferreira; Perillo,Alyne; Valério,Fernando Augusto; Guerra,Tadeu; Petrocchi,Diego; Morais,Rodrigo; Santos,Lucas Penna Soares; Garzon,Bruno; Dias,Juan Espanha Moreira; Santos,José Enemir dos; Morais,Allan Suhett de; Guimarães,Letícia Souza Lima; Garcia,Frederico Innecco Alves; Almeida,Thiago Oliveira e; Benfica,Carlos Eduardo Ribas Tameirão; Peixoto,Helberth José Cardoso; Ribeiro,Bruno Pardinho. |
| Urban avifaunal surveys in Brazil have been increasing in recent years, despite none of them consisting of long-term studies indicating events of regional colonization and/or missing species. Here, we present an avifaunal survey of an urbanized ecosystem in southeastern Brazil, carried out along 30 years, on the campus of the Pontifícia Universidade Católica de Minas Gerais, municipality of Belo Horizonte, Minas Gerais state. Inside the campus there is a forest reserve adjacent to a small lake. The inventory was mainly based on opportunistic records from the years 1982-2013. We recorded 134 bird species along the past 30 years. However, the present avifauna is composed of 123 species. A total of 97 species was recorded in the reserve, including the forest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avifauna; Colonization; Disappearing species; Urban environment. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013002500001 |
| |
|
| |
|
| |
|
|
| Tabarelli,Marcelo; Mantovani,Waldir. |
| RESUMO - (Colonização de clareiras naturais na floresta Atlântica no sudeste do Brasil). Em duas florestas na encosta atlântica no sudeste do Brasil, foi analisada a colonização vegetal de 23 clareiras naturais (34-256 m²). Nos dois locais de estudo, as clareiras pequenas foram as mais abundantes, cobrindo a maior parte da superfície ocupada por este tipo de perturbação (100-66%). As clareiras apresentaram padrão comum de colonização, caracterizado pela dominância de indivíduos e espécies tolerantes à sombra, principalmente aquelas de sub-bosque. Não observou-se relação entre tamanho das clareiras, composição de guildas de regeneração e a abundância das espécies dominantes. Os resultados sugerem que a floresta atlântica possui riqueza reduzida de espécies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Treefall gaps; Colonization; Diversity; Atlantic forest. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100006 |
| |
|
|
| Moraes,Sylvia Raquel Gomes; Tanaka,Francisco André Osama; Massola Júnior,Nelson Sidnei. |
| Anthracnose, caused by Colletotrichum gloeosporioides, produces brown lesions on guava fruits, causing severe losses on postharvest. In this study, the infection and colonization of guava fruits by C. gloeosporioides has been examined using scanning and transmission electron microscopy. Fruits at the physiologically mature stage were inoculated with a 10(5) conidia/mL spore suspension. Afterward, fruits were incubated at 25 °C in a wet chamber for periods of 6, 12, 24, 48, 96 and 120 h to allow examination of the infection and colonization process. Conidia germination and appressoria formation occurred six hours after inoculation (h.a.i). Penetration occurred directly via penetration pegs from appressoria, which penetrated the host cuticle 48 h.a.i.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Penetration; Pre-penetration; Ultrastructure. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200039 |
| |
|
|
| Grande,Henrique; Reis,Marcelo; Jacobucci,Giuliano Buzá. |
| Coastal regions are subject to various forms of environmental impacts, such as spills of crude oil and associated products, with a wide range of effects on benthic biodiversity. This study characterized the patterns of recolonization of the macrofauna associated with the brown alga Sargassum cymosum(C. Agardh), on fronds contaminated by diesel oil in a small-scale field experiment. We collected 40 fronds of S. cymosum from an algal bed in southeastern Brazil and defaunated each frond by immersion in fresh water. Half of the fronds were then immersed in seawater (control group) and the other half in a mixture of 50% diesel oil and 50% seawater (impacted group). The test fronds were returned to the algal bed, and natural recolonization took place over a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Marine macrofauna; Phytal. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200006 |
| |
|
| |
|
|
| França,Raquel C.S; Lopes,Maria Rosélia Marques; Ferragut,Carla. |
| The colonization process and successional patterns of a periphytic algal community were evaluated in a Amazonian Viveiro Lake (Rio Branco, Acre, Brazil). Sampling was performed over a period of 35 days; at four-day intervals for 20 days, and then at five-day intervals. Water sampling for physical, chemical and biological analyses was done during the dry and rainy season. Glass slides were used as artificial substrates for periphyton colonization. The structural community was evaluated through population density, algae class, diversity indices and descriptive species. Species richness, diversity and evenness increased as succession progressed. While density of Bacillariophyceae, Euglenophyceae and Zygnemaphyceae increased with succession, Cyanobacteria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Periphyton; Colonization; Succession; Diversity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000200010 |
| |
|
|
| Marins,Josy Fraccaro de; Carrenho,Rosilaine. |
| ABSTRACT There have been several reports of symbionts in the roots of plants that live in aquatic environments. Arbuscular mycorrhizal fungi (AMF) are the most common microsymbionts and possibly recolonized the aquatic environment together with plants; however, their functions and the extent of their benefits are unclear. Furthermore, the presence of other groups of fungi, such as dark septate fungi (DSF), with functions supposedly analogous to those of mycorrhizal fungi, has also been reported. The present work provides a compilation of data regarding the presence of arbuscular mycorrhizae in plants from, or under the influence of, aquatic environments, and co-colonization by AMF and DSF. Forty species of non-vascular plants, ferns, fern allies, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Flooding; Fungal co-occurrence; Macrophytes; Taxonomic diversity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200295 |
| |
|
|
| Candido,Helder Marcos Nunes; Miazaki,Ângela; Pontara,Vanessa; Bueno,Marcelo Leandro; Solar,Ricardo; Gastauer,Markus; Meira-Neto,João Augusto Alves. |
| ABSTRACT The growth-survival trade-off hypothesis states that functional traits of stem, wood, leaves and fruits govern acquisitive and conservative strategies of plant species that grow/survive differently in forests. We aimed to determine whether heterogeneity during the colonization of a secondary Atlantic Forest fragment causes differences in colonization-related traits and determines taxonomic composition of subplots. A total of 5,078 subplots were censused with leaf and fruit traits and height measurements being determined for each tree of each species, and with averaged-abundance-weighted values calculated for each subplot. A dendrogram was generated from the taxonomic composition of subplots using Sorensen similarity and UPGMA clustering. A total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colonization; Fruit size; LEEP 50-ha plot; Leaf functional traits; Plant height; Wood density; Plant functional traits; Phytosociology. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100001 |
| |
|
| |
|
|
| Felisberto, Sirlene Aparecida; Universidade Federal de Goiás; Rodrigues, Liliana; Universidade Estadual de Maringá. |
| Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil). This study evaluated the heterogeneity in periphytic algal community, under the influence of time colonization on artificial substratum. We also examined which abiotic variables most influenced the community in natural and artificial substratum. Egeria najas Planchon was used as natural substratum, and a plastic plant, as artificial. This experiment was carried out in a lateral arm from Rosana Reservoir, formed by Corvo Stream (Paranapanema river basin), in the period from November 21st to December 12nd, 2003, characterized as a warm and rainy period. Changes in species composition were assessed using the similarity... |
|
Palavras-chave: 2.00.00.00-6; 2.05.02.00-1 Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity Ecologia Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4627 |
| |
|
|
| Mattos,Katherine A.; Pádua,Vania L.M.; Romeiro,Alexandre; Hallack,Leticia F.; Neves,Bianca C.; Ulisses,Tecia M.U.; Barros,Claudia F.; Todeschini,Adriane R.; Previato,José O.; Mendonça-Previato,Lucia. |
| Burkholderia kururiensis is a diazotrophic bacterium originally isolated from a polluted aquifer environment and presents a high level of similarity with the rice endophyte "B. brasilensis" species. This work assessed the ability of B. kururiensis to endophytically colonize rice plantlets by monitoring different tissues of root-inoculated plants for the presence of bacterial growth in different media, electron microscopy and by 16S rDNA analysis. Observations of roots, stems and leaves of inoculated rice plantlets by electron microscopy revealed B. kururiensis colonization predominantly on root hair zones, demonstrating endophytic colonization primarily through the endodermis, followed by spreading into xylem vessels, a possible pathway leading to aerial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Burkholderia kururiensis; Colonization; Rice; Diazotrophic bacterium; Auxin. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000300009 |
| |
|
|
| GUSHIKEN,CAROLINA Y.; MEDEIROS,LILIANE B.; CORREIA,BRUNA P.; SOUZA,JOYCE M.; MORIS,DANIELA V.; PEREIRA,VALERIA C.; GIUFFRIDA,ROGERIO; RODRIGUES,MARCUS V.P.. |
| ABSTRACT Staphylococcus aureus can cause a variety of infections due to its high transmissibility, high pathogenic potential and resistance to multiple drugs, factors that contribute to the relevance of infections in healthcare services. The aim of this study was to document phenotypic and genotypic resistance factors of Staphylococcus aureus strains, isolated from nasal mucosa of medical students. A nasal swab was collected from the nares (nostrils) of 222 medical students. After collection, the samples were submitted to isolation and identification procedures. From 204 valid samples, 20.6% (42 samples) were positive for S. aureus. For the assessment of phenotypic resistance by disk-diffusion technique, from 42 samples, 95.2% showed resistance to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multidrug resistance; Colonization; MLSB resistance; MRSA. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401501 |
| |
| Registros recuperados: 61 | |
|
|
|
