127 research outputs found

    Análisis demográfico de Ceratitis capitata (Wiedemann, 1824) en variedades de uvas de mesa.

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    EI Valle de San Francisco (VSF), principal región brasilefia de producción de uvas finas de mesa (Vitis vinifera L.) para exportación, recientemente ha enfrentado se rios problemas con Ceratitis capitata (Diptera: Tephritidae). EI tratamiento cuarentenario con frío es un requisito indispensable para el comercio de uvas destinadas a los Estados Unidos, 10 que aumenta los costos de producción

    Os efeitos da alimentação de machos de Ceratitis capitata (Wiedemann, 1824) (Diptera:Tephritidae), linhagem transgênica OX3864A na sobrevivência e suas implicações na Técnica do Inseto Estéril.

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    O presente trabalho teve como objetivo avaliar diferentes tipos de alimentos, oferecidos aos adultos recém emergidos, na sobrevivência de machos de C. capitata, linhagem transgênica OX3864A, desenvolvida pela empresa inglesa OXITEC

    Parasitismo de Diachasmimorpha longicaudata (Hymenoptera: Braconidae) em pomar de acerola no Vale do São Francisco.

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    O objetivo deste estudo foi avaliar a capacidade de Diachasmimorpha longicaudata (Asmead, 1905) (Hymenoptera: Braconidae) de forragear e parasitar larvas de Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) em um pomar comercial de acerola (Malphigia glabra L.)

    Irradiação de ovos de Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) para sua utilização na criação massal do parasitoide Diachasmimorpha longicaudata (Asmead, 1905)(Hymenoptera: Braconidae) no Brasil.

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    O presente trabalho teve como objetivo determinar a melhor dose de raios X que quando aplicada em ovos de C. capitata não comprometesse o desenvolvimento da mosca hospedeira e permitisse um adequado desenvolvimento do parasitoide D. longicaudata

    Competitividade sexual de machos de duas linhagens de Ceratitis capitata (Wiedemann, 1824) (Diptera:Tephritidae): mutante tsl-Vienna 8 e transgênica OX3864A, em condições de gaiola de campo.

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    O presente trabalho teve como objetivo comparar a competitividade sexual, bem como outros parâmetros comportamentais, de machos de duas linhagens de C. capitata, mutante tsl-Vienna 8 e transgênica OX3864A, esta última desenvolvida pela empresa inglesa OXITEC

    Antiretroviral (ARV) Therapy in Resource Poor Countries: What do we Need in Real Life?

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    Significant progresses have been made in the last 5 years towards the ultimate goal to provide universal access to care for all HIV/AIDS patients needing antiretroviral treatment in resource-poor countries. However, many barriers are still to be overcome, including (●) cost of care for the individual, (●) stigma, (●) lack of qualified human resources and infrastructure, especially in the rural setting, (●) rescue drugs for failing patients and (●) pediatric formulations. Priority actions to be promoted if the fight against HIV/AIDS is to be successful include: (i) promoting access to care in the rural areas, (ii) strengthening of basic health infrastructures, (iii) waiving of users’ fee to get ARV, (iv) a larger variety of drugs, with particular regard to fixed dose combination third line drugs and pediatric formulations, (v) local quality training and (vi) high quality basic and translational research. While the universal access to HIV care is crucial in developing countries, a strong emphasis on prevention should be maintained along

    Activation kinetics of single P2X receptors

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    After the primary structure of P2X receptors had been identified, their function had to be characterized on the molecular level. Since these ligand-gated ion channels become activated very quickly after binding of ATP, methods with adequate time resolution have to be applied to investigate the early events induced by the agonist. Single-channel recordings were performed to describe conformational changes on P2X2, P2X4, and P2X7 receptors induced by ATP and also by allosteric receptor modifiers. The main results of these studies and the models of P2X receptor kinetics derived from these observations are reviewed here. The investigation of purinoceptors by means of the patch clamp technique following site-directed mutagenesis will probably reveal more details of P2X receptor function at the molecular level
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