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Dourados, Brazil

Paulan S.D.C.,Sao Paulo State University | Silva H.R.,Sao Paulo State University | Lima E.A.C.D.F.,Sao Paulo State University | Flores E.F.,Sao Paulo State University | And 2 more authors.
Engenharia Agricola | Year: 2012

Visceral Leishmaniasis (VL) is caused by protozoan of genus Leishmania and transmitted by sand flies of genus Lutzomyia, which has been adapted to the peridomicile environment where dogs are their mainly food source, increasing the risk for human cases. In this study, techniques of geoprocessing and spatial statistics were utilized as a contribution to understanding the epidemiological dynamics of VL in the urban area of Ilha Solteira, SP. Source

Rickli H.C.,Federal University of Parana | Fortes A.M.T.,West Parana State University | Da Silva P.S.S.,Paulista University | Pilatti D.M.,Biologa | Hutt D.R.,West Parana State University
Semina:Ciencias Agrarias | Year: 2011

The family Meliaceae has been identified as one of the most promising for biological control, as most species have biologically active compounds. Among the species, the Neem (Azadirachta indica A. Juss) is that stands out most for its efficiency and low toxicity, and it is utilized to control insects, fungi and nematodes. The aim of this work was to verify the allelopathic potential of aqueous extract of fresh leaves of Neem on germination of lettuce, soybeans, maize, beans and Bidens pilosa, as a way to control this weed. The extract was obtained by grinding 200g/L of fresh leaves of the Neem (considered extract 100%) and diluting in distilled water at concentrations of 80, 60, 40, and 20%, and a control with only water. The seeds were kept in the germination chamber at a temperature of 25°C, with photoperiod of 12 hours of light. The aqueous extract affected the germination percentage and average length root of lettuce, with values of 1% and 0.1, cm respectively. For the soybeans, the extract influenced negatively the average time of germination and average speed of germination. There was a drastic reduction of the average root length at higher concentration for soybean, corn and beans. For Bidens pilosa all the parameters analyzed were negatively affected, which means sensitivity to the extract. The bioassay performed in the laboratory showed that the aqueous extract of fresh leaves of Azadirachta indica has allelopathic effect on all species. © Pleiades Publishing, Ltd., 2011. Source

Brito G.C.B.,Centro Universitario Una | De Souza D.B.,Centro Universitario Una | Vasconcelos F.C.W.,Doutora em Ciencias | Da Conceicao Braga L.,Biologa
Revista em Agronegocio e Meio Ambiente | Year: 2010

The remarkable contribution of the oil sector to world economy leads to a demand that requires more structuring of the sector's production. Concerns related to environmental contamination possibility by petroleum products are on the increase. Pollution of soil, fresh water sources and sea environments caused by petroleum hydrocarbons causes severe problems to human, animal and vegetation health. Current bibliographical revision presents the characteristics of these pollutants, the processes involved in soil contamination, with special reference to biodegradation mechanism, and the bioprospecting of microorganisms capable of such processes. Degrading petroleum hydrocarbons is the property of several microorganism groups. The biological process of remediation, known as bioremediation, is caused by a stimulus in the environment's natural biodegradation. Bioprospecting of naturally selected organisms in areas contaminated by petroleum-derived substances represents an important strategy for the areas' bioremediation. Source

Rangely J.,Biologa | Rangely J.,Federal University of Alagoas | Fabre N.N.,Federal University of Alagoas | Tiburtino C.,Federal University of Alagoas | Batista V.S.,Federal University of Alagoas
Boletim do Instituto de Pesca | Year: 2010

The knowledge of the fishery dynamics is important to managers develop adequate measures. To support managers decision making in the Alagoas coast, the present study intended to determine the existence of interactions between physical and operational characteristics of the fishing fleet and the marine ichthyofauna exploited in northeast Brazil. From May, 2007 to April, 2008, interviews with fishermen were conducted based using structured and unstructured questionnaires. There were recorded and mapped 59 fishing grounds that has been exploited both by gillnet boats ("caceia") and line-fishing vessels. Four of these fishing grounds stand out due to the high frequency of use, but also there were indicated as key fishing grounds. We identified and classified 99 fish species into three categories: reef, estuarine and epipelagic. Two fishing strategies were identified within the area of operation of the fleet studied: coastal fishing and slope fishing. This study revealed a close relationship between the spatial distribution of the fleet, exploited species, fishing gears, fish yield and value. The result was a categorization of the fishing area. These categories must be considered by fishery managers, and may gives a better production and helps the conservation of fishing resources exploited in the Alagoas coastal waters. Source

Palharini M.C.A.,Polo Regional Centro Oeste | Fischer I.H.,Biologa | Alves A.R.O.F.,Polo Regional Centro Oeste | Fileti M.S.,University of Sao Paulo
Revista Brasileira de Fruticultura | Year: 2016

This study aimed to evaluate the effect of alternative products and thermotherapy, singly and in combination, on the physicochemical quality and controlling decay of ‘Pedro Sato’ guavas. Initially the treatments with calcium chloride, potassium phosphite, 1-methylcyclopropene (1-MCP), cassava starch, ethanol followed by chlorine (ethanol+chlorine) and thermotherapy were evaluated for eight days of fruits storage at 22°C. In a second step, four treatments were selected (cassava starch, 1-MCP, thermotherapy and ethanol+chlorine) and evaluated the association of two, applied sequentially, during eight days of fruits storage at 25 °C. The 1-MCP treatment and cassava starch were the most effective in keeping the physicochemical quality of ‘Pedro Sato’ guavas, slowing the weight loss, change of skin color, and contributing to firmness retention. Greater reduction in fruit rot was found in thermotherapy, cassava starch and 1-MCP treatments. The associations of 1-MCP/cassava starch and thermotherapy/cassava starch were the most effective treatments to maintain the quality of ‘Pedro Sato’ guavas, slowing the weight loss, change of skin color, and loss of firmness. Association treatments reduced incidence of decay, especially the ethanol+chlorine/ thermotherapy and thermotherapy/cassava starch that were more efficient until the fourth day of storage. The rots incidence correlated with parameters of skin color and firmness for most association treatments. In general, it is recommended the thermotherapy/cassava starch for guavas stored at 22-25ºC as a way of maintaining the physicochemical quality and delaying at least two days the symptoms of decay. © 2016, Sociedade Brasileira de Fruticultura. All rights reserved. Source

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