974 resultados para Vertebrado - Reprodução


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The literature about the Geography teaching has shown that most male and female teachers of this subject go on guiding their teaching practice based on the traditional Geography fundamentals, whose main characteristic consist in the description of places. The incorporation of scientific standards that change the old principles and concepts have not been happening, unless in a punctual way. The overcoming of the traditional Geography, related to the aspects accepted by the scientific field have not happened in Brazil yet, not only because of certain obvious obstacles, as the literature has been pointed out but also by symbolic obstacles, which block the incorporation of the new, of the non habitual action. One of those obstacles that motivated the accomplishment of this study was the social representations that are theoretically studied here under the perspective developed by Serge Moscovici. Then, the focus of this doctorate study is concentrated in the apprehension of the content and structure of the social representation of teaching of Geography and its relation with the habitus that gives form and social visibility to the ones who are teachers of that subject in Teresina. The consecution of this work was especially based on the Pierre Bourdieu´s praxiology, mainly on the concepts of social field, habitus and capital, as well as the theory of social representations, specifically on the approach of central nucleus developed by Jean-Claude Abric and Jean-Claude Flament. The initial hypothesis pointed out the existence of a Geographer´s primary habitus built through the development process of the geographic science field in Brazil, as a basis of production of a social representation of teaching geography . That representation, however, would act as a symbolic obstacle to the incorporation of the new scientific contents and pedagogical practice, which require from the teacher investigative and questionable attitude in the presence of the reality and contents approached in the classroom. That initial hypothesis laid on the theoretical purpose that it has been developed by Domingos Sobrinho (1997), which states that there is a narrow relationship between the habitus and social representation. The study was developed with male and female teachers of Geography from public schools of Teresina. The methodology involved the use of a questionnaire, the free-word association technique and deep interviews. The achieved results showed the presence of a complex process of representational construction and its articulation with a habitus produced by the synthesis of several situational and cultural referents, from among of them we can point out an insertion in a social field of practice exclusively related to the teaching and the reproduction of a professoral teaching (SILVA, 2003), built through the school development process, which those male and female teachers were exposed. The initial hypothesis that considered the local reproduction of a primary habitus of the Geography was denied, therefore, it was verified that there is not in Teresina the production/reproduction of the structures, rules and practice of the national scientific field, in which this subject is inserted. Hence, the incorporation of the new patterns of the geographic scientific knowledge is difficult because of the inexistence of a scientific habitus, that is, mental schema systems that would let the teachers mentioned above connect themselves appropriately to the science and its practices. So, it has gotten a social representation of teaching geography based on contents strictly related to the reproduction of structures, mental schema from the educational field which attach themselves to the hegemonic pedagogical practices in the national scope

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O objetivo desta pesquisa foi comparar diferentes cultivares de brassicáceas em relação à capacidade reprodutiva e preferência para alimentação e oviposição da traça-das-crucíferas. Os experimentos foram realizados utilizando-se as cultivares de repolho Midori, Chato-de-Quintal, híbridos da Top Seed® - Agristar (TPC 308, TPC 681 e TPC 668), couve-flor Bola de Neve, couve brócolis Ramoso Piracicaba Precoce e couve Manteiga da Geórgia, sendo esta última utilizada como padrão de suscetibilidade. Por meio dos dados biológicos de P. xylostella foram estimados os parâmetros necessários para a construção de tabela de vida de fertilidade, para comparação das cultivares testadas em relação à capacidade reprodutiva da praga. em gaiolas de criação da traça-das-crucíferas foram colocados quatro quartos de folha, dois a dois, que justapostos formavam um círculo de 8 cm de diâmetro, confrontando-se os materiais dois a dois. As partes foram dispostas equidistantemente, para realização do teste de dupla chance de escolha (preferência para alimentação e oviposição) e de múltipla chance de escolha, confrontando todos os substratos (preferência para alimentação). As cultivares que proporcionaram melhor desenvolvimento e reprodução para a traça-das-crucíferas foram couve Manteiga da Geórgia e couve brócolis. Para preferência alimentar constatou-se alta suscetibilidade em couve Manteiga e TPC 681 e para preferência de oviposição alta preferência para couve-flor Bola de Neve. Com isso, sugere-se a divisão das cultivares estudadas em quatro classes distintas: repolho Midori como moderadamente resistente (MR); couve-flor Bola de Neve e repolho Chato-de-Quintal como suscetíveis (S); couve brócolis, TPC308, TPC681 e TPC668 como moderadamente suscetíveis (MS); e couve Manteiga como altamente suscetível (AS).

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Climacteric is the name of the period of the human life that it is going from the 40 years old, approximately, until the 65 years old. Though, for besides a biological phase of the woman's life, the climacteric is an object of the social world that is rendered to different apprehensions and readings on the symbolic plan. In this study, it was looked for to know the social representations, that health' professionals acting in the programs of the climacteric and the users of those same services, build in respect of that purpose. Besides, it tried to be seen that the social hegemonic representation that guides the actions and the agents' attitudes in the practices of attendance and education for the woman's health in the climacteric in the extent of the investigated institutions. The data were collected through interviews, questionnaire, focal discussion group and direct observation. The observation field was constituted by the three institutions that develop the attendance and education for the woman's health in the climacteric phase, in the city of Natal. A gender perspective was also been adopted, sought to evidence as the cognitive structures that assure the masculine power reproduction, pronounce to the social representations to build a sense to the investigated purpose. It was verified that the social representations of the climacteric are built mainly around the semantic fields old age and disease. For the health professionals, the meaning of the simbol old age carries the marks of the indentified system of the middle class employed, but also, of the feminine habitus that guides them to have an ethical and aesthetic apprehension of their own body. The climacteric, in that way, is seen as a difficult phase , a painful event that scares . For the women attended by those professionals, the sign old age means feeling emphasis from the biological climacteric aspects, in other words, the sensations and signs that forbid the body to accomplish certain linked basic life functions. Along the whole course of this thesis, it was verified that the climacteric is a complex phenomenon that needs to be faced as such. While cultural phenomenon, it is urgent to look for means to help to combat the centrality of the professional representations that face the climacteric as old age and disease, particularly in the field of health

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The purpose of this work is to analyze the knowledge relationships that articulate in projects of maintainable rural development construction for the paraiban semi-arid, analyzing the farmers daily practices and their relationship with the technological practices spread by ONGs. We took as empirical object the rural community of Lajedo de Timbaúba, municipal district of Soledade-PB, located in the very small region of paraiban Curimataú. It is a community where registers one of the first cases of maintainable rural development planning in the state of Paraíba. The analysis was centered on the farmers experiences of life in sustainability experience, trying to understand how they acquire new knowledge and how they interact with them. In methodological terms, it was considered feasible to place the knowledge interaction between the farmers and technicians from ONGs by placing the analysis according to Paulo Freire s questioning (2006): extension or communication? To understand the farmers daily practices, it was resorted to the theoretical contribution by Michel de Certeau (2008) in order to discern a microresistance movement of inversion/rejection/changing by the farmers in relation to their external knowledge. Just from the theoretical point of view and resorting to the imaginary social by Cornelius Castoriadis (1982), it was considered the way of living of the farmers researched, having as reference the experience in the material and symbolic production of their lives. It became indispensable, therefore, not to dissociate the knowledge relationships between farmers and technicians from ONGs from the sustainability concepts, maintainable rural development, and rural extension. The results of the study revealed that the farmers from Lajedo de Timbaúba while dealing with the technological practices proposed by ONGs that work in the community, express those practices from their daily logic, and they constitute them in survival strategies that are inserted in their own idiosyncrasy. It was verified, therefore, that the external knowledge presented by the proposals of sociability alternatives with the droughts in the perspective of maintainable development while placed in the farmers daily relationship, they are judged as advantageous or disadvantageous when they are confronted with their peculiar way of doing their daily work. The technological practices are incorporated, denied, or recreated starting from evaluative criteria related to the preservation of the soil and to the economical and social reproduction of the unit of production of family agriculture

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Um amplo projeto de estudos sobre a utilização do umezeiro como porta-enxerto para pessegueiro está sendo desenvolvido na FCAV/UNESP, Câmpus de Jaboticabal-SP, devido, especialmente, às promissoras características para uso como redutor de vigor da copa e sua boa qualidade de frutos. Alguns trabalhos na literatura citam o umezeiro como resistente ao nematóide das galhas, entretanto dispõe-se de poucas informações. Neste trabalho, teve-se por objetivo estudar a reação de clones de umezeiro e cultivares de pessegueiro a Meloidogyne javanica. O experimento foi conduzido em casa de vegetação, com 6 tratamentos (Clones 05; 10 e 15 de umezeiro e as cultivares Okinawa, Aurora-1 e Dourado-1 de pessegueiro) e 9 repetições. As plantas foram mantidas em vasos de cerâmica contendo uma mistura de solo e areia (1:1, v/v), previamente autoclavada a 121ºC e 1kgf.cm-2 por 2 horas. Aos sessenta dias após o plantio, cada planta foi inoculada com 3.000 ovos e juvenis de segundo estádio de Meloidogyne javanica. Aos 100 dias após a inoculação, as plantas foram colhidas para avaliação da massa de matéria fresca do sistema radicular, número de galhas por sistema radicular, número de ovos e juvenis por 10 g de raízes, número de ovos e juvenis por sistema radicular e fator de reprodução. Verificou-se que todos os clones e cultivares de umezeiro e pessegueiro, respectivamente, mostraram-se resistentes a Meloidogyne javanica.

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Cet étude et thème de dissertation est devenue nécessaire a partir des inquiétudes d éducateur et des pratiques pédagogiques développées aux classes d éducation physique au tour nocturne à l École Municipale Prof. Veríssimo de Melo, dont les élèves sont des jeunes et adultes que habitent au quartier Felipe Camarão. Ces jeunes cohabitent avec le stigmate de la violence que est toujours présente dans cette communauté, située a la région ouest de Natal. On peut trouvé parmi les élèves y matriculés des trajectoires de vie interrompues par facteurs de risque comme criminalité, des adolescentes enceintes et drogues. Ces faits interférent directement avec les procès d intégration sociale et augmentent la violence, reproduisant les cycles de pauvreté et ainsi, limitant les possibilités d ascension sociale. Les résultats des procédées pédagogiques utilisées pendant les classes ont montré la nécessité d approfondir cet étude problématisant cette réalité et, incitant par les pratiques corporelles et discussion, la réflexion sur des thèmes comme facteurs de risque, temporalité, projets de vie et auto-connaissance. En profitant de l intérêt de ces jeunes pour la langage cinématographique comme une façon de mettre en ouvre ces réflexions et rapportant leur connaissance formel avec le savoir et expériences du groupe on a décidé de produire un film court de 15 minutes sur le quartier, idéalisé et produit collectivement. Pour ça, ont a réalisé 10 classes-ateliers avec les élèves qui ont été connus comme « le groupe du cinéma ». Les ateliers pédagogiques qui sont ici, au même temps, référence de recherche et procédée pédagogique, réaffirment la notion de résilience: la capacité de l individu de transformer un obstacle, une adversité ou même une tragédie personnel dans une situation positive ou comme un renfort de ce que nous avons de meilleur. Dans ce sens, cet étude peut aider les professeurs de toutes les matières, que travaillent a l école publique et que se trouvent dans ce contexte, considéré vulnérable, surtout le professeur d éducation physique. Ce travail peut aussi devenir une référence pour aborder des concepts et valeurs que nos aideront à renouveler cette vision de monde étroite et déterministe, responsable pour la reproduction des cycles de pauvreté et violence. Cet étude a été fondée sur des auteurs comme Edgar Morin, Bóris Cyrulnik et Conceição Almeida parmi d autres

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In the period of 2001/2002 a population of Meloidogyne javanica was found infecting a soybean cultivar 'CD 208" considered resistant in a field located in the County of Nuporanga, state of São Paulo (SP), Brazil. Due to this fact, it was evaluated the resistance of some of the main cultivars used in areas of the Cooperativa dos Agricultores, in Orlandia (CAROL), SP. The study was carried out in greenhouse conditions of the Departamento de Fitossanidade (Plant Protection) da UNESP/FCAV, Campus of Jaboticabal, SP, in clay pots of 5 liters. Five individual plants of the cultivars BRS 133, BRS 183, BRSMG 68, BRSMG Garantia, CD 201, MG/BR-46 Conquista, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) 48, IAC 22, M-SOY 7901, M-SOY 8001 and M-SOY 8400 were inoculated with 3,000 eggs and second estage juveniles of the nematode, seven days after seed germination and the evaluation was carried out 57 days after inoculation. Galls, egg masses and the reproduction factor were determined. The results pointed out that the cultivar BRSMG Garantia was tolerant to the nematode population and all others were susceptibles.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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O presente estudo teve por objetivo avaliar a reação dos Clones 05; 10 e 15 de umezeiro (Prunus mume Sieb. et Zucc.) e das cultivares Okinawa, Aurora-1 e Dourado-1 de pessegueiro [Prunus persica (L.) Batsch] a Meloidogyne incognita (Kofoid and White) Chitwood, em condições de casa de vegetação. As plantas foram mantidas em vasos de cerâmica contendo uma mistura de solo e areia (1:1, v/v), previamente autoclavada a 121ºC e 1kgf.cm-2 por 2 horas. Aos 60 dias após o plantio, cada planta foi inoculada com 2.000 ovos e juvenis de segundo estádio de Meloidogyne incognita. O experimento foi conduzido em delineamento inteiramente casualizado, com 6 tratamentos (genótipos) e 9 repetições. Transcorridos 116 dias após a inoculação, as plantas foram colhidas para avaliação do sistema radicular. Foi possível verificar que o número de galhas por sistema radicular, o número de ovos e juvenis por 10g de raízes e por sistema radicular foi nulo ou praticamente nulo em todos os clones e nas cultivares estudadas, de forma que os respectivos fatores de reprodução foram todos inferiores a 1. Conclui-se que os Clones 05; 10 e 15 de umezeiro, assim como as cultivares Okinawa, Aurora-1 e Dourado-1 de pessegueiro são resistentes a Meloidogyne incognita.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Estudos relacionados com tabelas de vida são fundamentais para o entendimento da dinâmica populacional de insetos. Neste trabalho, a espécie Brevicoryne brassicae (L.) foi estudada durante a primavera, verão, outono e inverno por meio de tabelas de vida de fertilidade, visando-se avaliar a influência da temperatura sobre sua dinâmica populacional. Para a condução dos experimentos, os pulgões foram mantidos em pequenas gaiolas fixadas em folhas de couve, Brassica oleracea L. var. acephala DC. Os parâmetros das tabelas de vida, estimados na escala de tempo em graus-dia, evidenciaram que B. brassicae apresentou maior sobrevivência nas condiç ões térmicas de outono e inverno, o mesmo ocorrendo com sua fecundidade quando as fêmeas foram submetidas às temperaturas da primavera. As elevadas temperaturas registradas no verão influenciaram adversamente a dinâmica populacional de B. brassicae, pois afetaram negativamente seu desenvolvimento, sobrevivência, longevidade e reprodução.

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Com o objetivo de avaliar a reação de clones de umezeiro (Prunus mume Sieb. et Zucc.) e cultivares de pessegueiro [Prunus persica (L.) Batsch] ao nematóide anelado Mesocriconema xenoplax (Raski) Loof & de Grise, realizou-se o presente estudo em casa de vegetação do Departamento de Fitossanidade da FCAV/UNESP, Câmpus de Jaboticabal-SP. As plantas foram mantidas em vasos de cerâmica com 6 litros de capacidade, contendo uma mistura de solo e areia (1:1, v/v), previamente autoclavada a 121°C e 1kgf.cm-2 por 2 horas. Cada planta foi inoculada com 10mL de uma suspensão de 200 M. xenoplax por mL. Com os resultados obtidos, após 105 dias da inoculação, pode-se concluir que os Clones 05; 10 e 15 de umezeiro e as cultivares Okinawa e Aurora-1 de pessegueiro são suscetíveis a M. xenoplax. A cultivar Aurora-1 apresentou maior Fator de Reprodução (93,06).

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The objective of this research was to determine the survival, reproduction and predaceous capacity of Orius insidiosus on cotton aphid Aphis gossypii. Cotton plants of Antares, CNPA7H and Acala 90 cultivars (respectively, without tricome, medium tricome density and high tricome density) were individualized and infested with 15 third/fourth instar nymphs of A. gossypii, and then first-instar nymphs of O. insidiosus were released on the plants. The evaluations were made daily, quantifying survival and nymphal development; the number of cotton aphids A. gossypii per day and total; the number of eggs and the population of the predator (number of insects by female); and the conversion efficiency of A. gossypii predaceous. The nymphal development did not differ according to the cotton cultivars. The Antares cultivar favored a higher daily predation rate for the 1st, 2nd and 4th instars and adults of O. insidiosus. The number of eggs and nymphs was smaller when O. insidiosus females were confined on the Acala 90 cultivar. According to the predation rate of O. insidiosus, the efficiency of alimentary conversion was determined for the Antares, CNPA7H and Acala 90 cultivars, being respectively, 4.28, 3.00 and 2.75 cotton aphid predation for each egg of the predator.

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Foram investigados os efeitos das características do pelame e da taxa de sudação (TS) sobre o intervalo de partos (IEP, n = 423) e os dias para o parto (DPP, n = 1.202) de vacas da raça Braford criadas em sistema extensivo em região tropical úmida no Mato Grosso do Sul, Brasil. As análises foram realizadas pelo método dos quadrados mínimos considerando para intervalo de partos os seguintes efeitos das classes de idade da vaca ao parto: grupo genético; pai; e regressão sobre a refletância da superfície da capa (R), a espessura da capa (E), o comprimento dos pêlos (C), o número de pêlos por unidade de área (N), o diâmetro dos pêlos (D) e a taxa de sudação. Para dias para o parto, foram considerados os efeitos: R, E, C, N, D, TS, divididos em classes; grupo genético; idade no início da estação de monta; e pai. Os componentes de variância e co-variância foram estimados pelo método de Máxima Verossimilhança Restrita sob o modelo touro. As características adaptativas não foram importantes para a variação do intervalo de parto e dos dias para o parto, mas a taxa de sudação apresentou efeito importante sobre dias ao parto. As estimativas de herdabilidade foram quase nulas para IEP e DPP e maiores para as características adaptativas (E = 0,16 ± 0,09; C = 0,18 ± 0,09; N = 0,08 ± 0,06; D = 0,12 ± 0,07; R = 0,30 ± 0,12; TS = 0,10 ± 0,06). Os resultados obtidos para as correlações genéticas de IEP e DPP com TS e entre as características do pelame indicaram que a seleção simultânea para menores valores de C pode ser favorável à redução do intervalo de partos. em geral, as correlações genéticas entre TS, IEP e DPP apresentaram elevado erro-padrão. Considerando os resultados deste estudo e a importância das características do pelame e da sudação, confirma-se a necessidade de se estudarem as correlações genéticas entre as características adaptativas e o desempenho reprodutivo para o progresso da adaptação de bovinos da raça Braford no Brasil.