Atividade externa carregamento de isca granulada e controle de Acromyrmex crassispinus em floresta de Pinus taeda.

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Pragas florestais associadas a problemas silviculturais.

bitstream/item/38120/1/iede.pdfSeção Artigos Técnicos

Population Dynamics of Acromyrmex crassispinus (Forel) (Hymenoptera: Formicidae) and Attacks on Pinus taeda Linnaeus (Pinaceae) plantations

This work aimed to study the population dynamics of Acromyrmex crassispinus (Forel) in Pinus taeda L. plantations, evaluating the density and spatial distribution of nests over time, inferring about the period of the first nuptial flight of A. crassispinus colonies, and evaluating the levels of attack of this leaf-cutting ant on P. taeda plants. Assessments were performed monthly in the first year after planting, every three months until the third year and every six months until the plantation was six years old. The presence of nests was observed only after 15 months after planting. The nest density gradually increased until the planting completed 30 months, and decreased when the forest canopy began to close (after 54 months). Spatial distribution of A. crassispinus nests was random. Probably, the first nuptial flight of an A. crassispinus colony occurs after the third year of the colony foundation. Pinus taeda plants were not attacked by A. crassispinus throughout the evaluation period. Then, when dealing with a replanting area of Pinus plantation, where the previous forest has not been subject to pruning nor thinning, the problem with A. crassispinus is almost null if the clearcutting and the new planting occur during the winter. In this case, leaf-cutting ants control can be alleviated and it is not necessary to carry out systematic control of ants where A. crassispinus is the predominant leaf cutting ant species. Acromyrmex crassispinus control should be done only if nests are located or if attacked plants by ants are detected

Distribution of p63, a novel myoepithelial marker, in fine-needle aspiration biopsies of the breast: an analysis of 82 samples

BACKGROUND. The presence of myoepithelial cells (MECs) in fine-needle aspiration biopsies (FNAB) of the breast constitute an important criterion used to diagnose benign breast lesions. However, MECs sometimes have a distorted cytomorphology, and most of the previously evaluated myoepithelial markers do not have satisfactory sensitivity and specificity. p63, a recently characterized p53 homolog, is a nuclear transcription factor that is expressed in basal cells of multilayered epithelia and myoepithelial cells of the breast. The authors analyzed the immunocytochemical distribution of p63 in a series of 82 breast FNABs (30 benign lesions and 52 malignant breast lesions). METHODS. Eighty-two archival, Papanicolaou-stained smears of breast lesions were retrieved from the files of the authors’ institutions. Immunocytochemistry was performed according to the streptavidin-biotin-peroxidase complex technique using the antibody 4A4 (against all p63 isoforms). Two pathologists evaluated the distribution of p63 positive cells. Only nuclear reactivity was considered specific. RESULTS. In benign lesions, p63 decorated the nuclei of MECs in all samples. p63 also stained naked nuclei in fibroadenomas. In malignant lesions, p63 was positive in MECs overlying malignant cell clusters in all 8 samples of ductal carcinoma in situ (DCIS), in 9 of 16 samples of pure invasive carcinomas (IC), and in 16 of 20 samples that contained both DCIS and IC. In 18 samples (36%), a variable population of p63 positive, malignant cells was observed. p63 failed to decorate stromal, neural, adipocytic, and smooth muscle cells in all samples. CONCLUSIONS. p63 is a reliable nuclear marker of MECs in breast aspirates. Regardless of the fact that variable proportions of p63 positive, malignant cells were observed in 36% of breast carcinoma aspirates, p63 may be a useful adjunct antibody to confirm the presence of MECs in FNABs of benign breast lesions.Fundação para a Ciência e a Tecnologia (FCT) - SFRH/BD/5386/2001

p63 expression in sarcomatoid/metaplastic carcinomas of the breast

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Contribuição do geoprocessamento para o estatuto da cidade como ferramenta para o planejamento e gestão urbana

O Estatuto da Cidade é um instrumento de regulação urbanística e intervenção urbana resultante dos movimentos sociais de uma sociedade organizada na luta pela reforma urbana. Destaca-se aqui a contribuição do geoprocessamento como ferramenta integradora e de análise no planejamento e na gestão urbana apoiados em parâmetros das Diretrizes Gerais, dos instrumentos do Estatuto da Cidade que estabelecem o Ordenamento Territorial e a Propriedade Urbana. Aborda uma compreensão que permite de forma estrutural e contextualizada acentuar a importância da tecnologia como apoio aos instrumentos de gestão da propriedade urbana, a eficiência do Cadastro Territorial Multifinalitário sobre o uso, ocupação e domínio de posse das propriedades. Realça o geoprocessamento como um meio importante na caracterização das condições da paisagem para estudos preditivos e para o ordenamento das estruturas informacionais.The City Statute is an instrument of regulation and urban intervention arising from social movements of an organized society in the struggle for urban reform. It is highlighted the GIS contribution as an integration and analysis tool in the planning and urban management, which are based on the General Guidelines and the City Statute that establishing the Spatial Planning and Urban Property. Covers an understanding, which allows, in a structural and contextualized way, emphasize the importance of technology to support the management of city property, the efficiency of the Territorial Multipurpose Cadastre, the occupation and the ownership domain of properties. Enhances the geoprocessing techniques as an important way to describe the landscape conditions for predictive studies and the informational structures demand.Peer Reviewe

Criação de Xenostigmus bifasciatus (Hymenoptera: Braconidae), parasitóide de Cinara spp (Hemiptera: Aphididae) em diferentes temperaturas.

Organizado por Patricia Póvoa de Mattos, Celso Garcia Auer, Rejane Stumpf Sberze, Katia Regina Pichelli e Paulo César Botosso

Período de atividade externa, carregamento de isca granulada e controle de Acromyrmex crassispinus em floresta de Pinus taeda.

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