803 resultados para Viagem, Brasil, Região Nordeste


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This study aimed to evaluate some microhabitat characteristics of two populations of Tolypothrix distorta in streams from midsouthern region of Paraná State on a seasonal period. Each population was monthly investigated for the abundance of T. distorta and environmental variables such as depth, current velocity, irradiance, richness, and substrate diversity (H') using the quadrat technique for each sample unit (n = 7-10). For each segment the following physical and chemical water variables were also measured: temperature, oxygen saturation, specific conductance, pH, and turbidity. The seasonal period of higher abundance (percent cover) occurred during the months corresponding to summer/fall for both populations. The analyses also showed that populations had lower niche width and wide variation under the environmental conditions, characterizing the species as a generalist in the use of resources. Faster water flow and larger substrates favored the development of T. distorta, which may be related to the species morphological characteristics, thallus type that consists of tangled filaments formed by tuft and covered with thick gelatinous coats.

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Pós-graduação em Medicina Veterinária - FCAV

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Pós-graduação em Agronomia (Horticultura) - FCA

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The preventive efficacy of ivermectin and abamectin administered in different routes (subcutaneous, intramuscular and pour-on) and doses (200 and 500mcg kg(-1)) against Cochliomyia hominivorax in the scrotal sac of cattle after castration, was evaluated. Animals from six different farms, in the state of Sao Paulo and Minas Gerais, Brazil were used. For each study, 3045 uncastrated bulls, depending on the number of groups, were selected. On day zero of the study, the procedure was carried out by the method of bloody castration and the animals were treated after this process. The efficacy of ivermectin and abamectin administered via the pour-on (500mcg kg(-1)), subcutaneous (200mcg kg(-1)) as well as the efficacy of abamectin intramuscularly (200mcg kg(-1)) were evaluated. In each experiment, one group of animals was kept as control. The animals were evaluated from the 3rd to the 14th day after castration process/treatment. The efficacy values for both active principles were <= 30% the next day 10 post-treatment (PT), and in five experiments, both ivermectin and abamectin, regardless of the route of administration, were ineffective (0.0%) on the day 10th PT. Based on the results found in this study, conducted in different properties from southeastern Brazil, both ivermectin and abamectin, when used the protocol presented, were considered ineffective in preventing scrotal myiasis in bulls, irrespective of the route of administration and dose used.

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A discussion, through a literature review, on the use of photographic documents and Documentary Analysis (DA) for the preservation, description and retrieval of images of pilgrimages in northeastern Brazil, which are archived at the Laboratory of Information Science and Memory (LACIM). The photograph acts as an expression of faith and devotion; it is a witnesses and documents, through images, the records of the day-to-day folk religion in its multiple meanings and situations, linked to the sacred. The DA —as a set of procedures performed after the reading of documents— facilitates the analysed collection location or query through the documentary language. This paper tries to show that the particular form of the information contained in a photographic archive echoes submerged memories of the pilgrims, authenticating a social fact in the country, capturing the sacredness from specific moments of celebration.

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Formigas do gênero Linepithema se encontram distribuídas amplamente por todo o globo, algumas delas, como Linepithema humile são muito conhecidas por sua ação invasora, comprometendo fauna e flora dos ambientes que invadem. Devido a notoriedade dessa espécie, há uma tendência em identificar erroneamente como L. humile as espécies próximas. Assim ocorreu com outras espécies da região Sul do Brasil com características próximas a ela. L. micans é a principal espécie que se associa com a pérola-da-terra Eurhizococcus brasiliensis (Hemíptera: Margarodidae), importante praga na vinicultura gaúcha. Análises preliminares revelaram a existência de três subtipos de L. micans. No presente estudo foram analisadas diferentes populações de L. micans das vinícolas do Estado do Rio Grande do Sul com a utilização de dois genes mitocondriais, utilizados para DNA Barcode de animais, com o propósito de estabelecer a distribuição dos diferentes mitótipos de L. micans. O resultado obtido revelou a existência de 14 haplótipos, sendo 12 novos e a análise da rede de haplótipos sugere a existência de dois possíveis grupos ancestrais

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Results of apatite fission tracks from twelve samples collected across a Borborema Province transect, northeastern Brazil, revealed two major paleothermal events: a cooling event occurred between Albian and late Cenomanian (110 - 80 Ma) and a second cooling event starting on early Paleocene (66 Ma). Given the wide expression of the studied area (sampling trend along four brazilian states) a correlation between the distribution of fission track data and the current geological / geomorphological scenario was made possible, considering the area’s tectono - stratigraphic past and its thermochronologic evolution until now. The fact that the employed thermochronologic tool relates to a relatively shallow geothermometer, substancially information for understanding the behavior of basement brittle tectonic was achieved. These data were used to analyze faults origin and reactivation, associated with sedimentary basins evolution in the context of South America - Africa continental breakup.

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O genero Musa apresenta características em suas inflorescências como: grande tamanho, visibilidade, odor floral e fluxo de néctar abundante, que tornam o gênero um importante recurso para morcegos fitófagos. O objetivo do presente trabalho foi estudar as interações entre morcegos filostomideos e flores de M. paradisiaca no pomar da fazenda Santo Antônio dos Ipês, Município de Jaú, São Paulo. Três espécies (Glossophaga soricina, Anoura caudifer e Phyllostomus discolor) foram observadas alimentando-se do néctar das flores das bananeiras do pomar. Três formas distintas de comportamento de visita foram observadas: “adejo” para G. soricina e A. caudifer, “pouso de frente na inflorescência” para G. soricina e “pouso de cabeça para baixo na inflorescência” para P. discolor. As visitas ocorreram durante toda noite (das 18h00 às 6h00), com pico de vistas das 20h00 à 1h00. As visitas entre duas sub-famílias ocorriam de forma alternada nestes horários. Apesar das três espécies de filostomideos partilharem o néctar das bananeiras, os glossofagineos são os principais beneficiados por esse recurso alimentar, uma vez que cerca de 88% (N=694) das visitas registradas às suas flores foram realizadas por G. soricina e A. caudifer, enquanto apenas 12% (N=97) foram por P. discolor

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Pós-graduação em Agronomia (Ciência do Solo) - FCAV

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Pós-graduação em Educação Escolar - FCLAR

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Pós-graduação em Medicina Veterinária - FCAV