16 research outputs found

    Percepção química e visual de Anastrepha fraterculus (Diptera, Tephritidae) em laboratório Chemical and visual perception of Anastrepha fraterculus (Diptera, Tephritidae) in laboratory

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    A mosca-das-frutas-sul-americana, Anastrepha fraterculus (Wiedemann, 1830), é uma das principais pragas da fruticultura no Brasil. Durante a alimentação, as larvas fazem galerias nos frutos, alterando o sabor e prejudicando a produção e comercialização dos mesmos. O presente trabalho teve como objetivo estudar fatores envolvidos na escolha do hospedeiro por A. fraterculus. Foram avaliadas as respostas eletroantenográficas de machos e fêmeas a extratos etanólicos de frutos verdes e maduros de pessegueiro - Prunus persica, cultivar Chimarrita (Rosaceae), pitangueira - Eugenia uniflora (Myrtaceae), guabirobeira - Campomanesia xanthocarpa (Myrtaceae) e araçazeiro - Psidium cattleianum (Myrtaceae). Foram também observadas as influências da cor (amarela, verde e vermelha) e da composição do substrato de oviposição (polpas de araçá, guabiroba, pitanga e pêssego) na fecundidade da espécie. As respostas eletroantenográficas de fêmeas foram significativamente distintas para os extratos de guabiroba verde e madura, araçá maduro e pitanga verde. Em antenas de machos, as maiores despolarizações médias foram registradas em resposta aos extratos de guabiroba verde e madura, araçá verde e maduro e pitanga verde. As respostas eletrofisiológicas geradas não diferiram estatisticamente entre os sexos, para todos os tratamentos. A cor do substrato não afetou a oviposição. As fêmeas ovipositaram mais nos substratos contendo polpa de pêssego e de guabiroba, quando comparados aos respectivos controles.<br>The South American fruit fly Anastrepha fraterculus (Wiedemann, 1830) is one of the greatest threats to the fruit growing industry in Brazil. During the feeding process, the larvae build galleries within the fruit, altering the flavor and damaging its production and commercialization. The present work had as its objective to study the factors involved in the choice of the host by A. fraterculus. Electroantennographic responses of the males and females to the ethanolic extracts of the fruits of the peach tree - Prunus persica, cultivar Chimarrita (Rosaceae), Surinam cherry tree - Eugenia uniflora (Myrtaceae), Guabirobeira tree - Campomanesia xanthocarpa (Myrtaceae) and Brazilian guava tree - Psidium cattleianum (Myrtaceae) were considered. Also recorded was the influence of the color (yellow, green and red) and the composition of the substratum of oviposition (pulps of Brazilian guava, Guabiroba, Surinam cherry and peaches) in the fecundity. Electroantennographic responses of the females were distinct to the extracts of the unripe and ripe Guabiroba, ripe Brazilian guava and unripe Surinam cherry. In antennae of the males, the greatest depolarization average was registered in the responses to the extracts of ripe and unripe Guabiroba, ripe and unripe Brazilian guava and unripe Surinam cherry. Electrophysiologic responses did not differ statistically between the sexes for all the treatments. The colors of the substratum of oviposition did not affect the fecundity. The females ovipositioned more on the substratum containing pulp of peaches and of Guabiroba, when compared to the respective controls

    Measurement of the Mass of the Z-Boson and the Energy Calibration of Lep

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    Contains fulltext : 26847___.PDF (publisher's version ) (Open Access

    Incidence of traumatic spinal cord injury in Italy during 2013-2014: A population-based study

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    Study design: Observational prospective population-based incidence study. Objectives: The main objective of this study was to assess the incidence of traumatic spinal cord injuries (TSCIs) and incidence rates, in order to provide estimates by age, gender, characteristics and cause. Setting: This study was conducted at acute-care spinal cord injury (SCI) hospitals and SCI centers from 11 Italian regions, between 1 October 2013 and 30 September 2014. Methods: Data of all consecutive patients with acute TSCI who met the inclusion criteria were obtained through case reporting by clinicians. The data were collected into a web database. Incidence rates and incidence rate ratios were calculated and stratified by age, gender, cause, level and completeness. Results: From 50% of the entire population of Italy, 445 new cases of TSCI were included. The crude incidence rate of TSCI was 14.7 cases per million per year (95% CI: 13.4-16.4); the overall male to female ratio was 4:1 and the mean age was 54. Complete information was available in 85% of the sample and revealed tetraplegia in 58% and incomplete lesion in 67% of cases. The leading cause of TSCI was falls (40.9%) followed by road traffic accidents (33.5%). The leading cause was falls for patients over 55 and road traffic accidents for patients under 55. Conclusion: The changing trend of TSCI epidemiology concerns the increase in the average age of TSCI people and the increase of both cervical and incomplete lesions. The etiology shows the primacy of falls over road traffic accidents and suggests the need for a change in prevention policies

    Health Hazards Associated with Wheat and Gluten Consumption in Susceptible Individuals and Status of Research on Dietary Therapies

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    Wheat accounts for about 20% to over 50% of the total calorie intake of food in regions where it is grown. However, there is a clear perception that disorders related to the consumption wheat are increasing, particularly in Western Europe, North America, and Australia. We consider here the evidence for this perception and discuss strategies and therapies that may be used to reduce the adverse impacts of wheat on the health of susceptible individuals. First, we will introduce the major groups of wheat grain proteins, focusing on those associated with adverse reactions, and discuss in detail the three major adverse reactions triggered by wheat consumption, namely celiac disease, wheat allergy, and non-celiac gluten/wheat sensitivity. Finally, will discuss other issues associated with the consumption of gluten-free foods focusing on gluten contamination of products purported to be gluten-free, gluten threshold or tolerance among celiac patients, and food labeling

    A Randomized, Double-blind, Placebo-Controlled Study of Latrepirdine in Patients With Mild to Moderate Huntington Disease

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    Experimentele farmacotherapi

    A randomized, double-blind, placebo-controlled study of latrepirdine in patients with mild to moderate huntington disease: HORIZON investigators of the huntington study group and european huntington's disease network

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    Psoriasis vulgaris

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    Combining heavy flavour electroweak measurements at LEP

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