16 research outputs found

    Life‐cycle responses of a Mediterranean non‐migratory cyprinid species, the Northern Iberian chub (Squalius carolitertii Doadrio, 1988), to streamflow regulation.

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    Streamflow is considered a driver of interspecific and intraspecific life‐history differences among freshwater fish. Therefore, dams and related flow regulation can have deleterious impacts on their life cycles. The main objective of this study was to assess existing differences in the growth and reproduction patterns of a non‐migratory fish species (the Northern Iberian chub, Squalius carolitertii, Doadrio, 1988), between nonregulated and regulated watercourses. For 1 year, samples were collected from two populations of Iberian chub, inhabiting rivers with nonregulated and regulated flow regimes. Flow regulation for water storage promoted changes in chub's condition, duration of spawning, fecundity, and oocyte size. However, this non‐migratory species was less responsive to streamflow regulation than other native potamodromous species. Findings from this study are important to understand changes imposed by regulated rivers and can be used to support the implementation of suitable river management practices

    Controle da Leptospirose L. interrogans sorotipo pomona em rebanhos suínos

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    A method of control for swine Leptospirosis utilizing dihydrostreptomycin at 25 mg/kg of body weight, by the intramuscular route, associated to some prophylactic measures adopted, was applyed in eleven symptomatic or assymptomatic herds, and positive serological for Leptospira interrogans serum type pomona. The efficiency of this control system was approved, not only by the elimination of clinical symptoms, but also by the reached rate of 100% of negativity for leptospirosis, in the studied herds, eleven to forty-six months after the beginning of the experiment.Um método de controle para leptospirose suína, utilizando diidroestreptomicina, na dose de 25 mg/kg de peso vivo, por via intramuscular, associada a algumas medidas profiláticas, foi empregado em onze rebanhos suínos sintomáticos ou assintomáticos e positivos sorologicamente para Leptospira interrogans, sorotipo pomona. A eficiência deste sistema de controle ficou comprovada não só pela eliminação dos sintomas clínicos mas também pela constatação da taxa de 100% de negatividade, para leptospirose, alcançada pelos rebanhos estudados, em tempo que variou de onze a quarenta e seis meses, após o início do experimento

    Food resources and cyprinid diet in permanent and temporary Mediterranean rivers with natural and regulated flow.

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    Th is study addresses the differences in food availability, diet and feeding activity of the Iberian barbel, between permanent and temporary nonregulated rivers, and the effect of flow regulation on feeding parameters. A total of 267 adult barbels were seasonally collected in four nonregulated and regulated rivers from permanent and temporary basins, and their gut content was analysed. Locally available food sources were evaluated across sites and seasons. Ba rbels from the permanent nonregulated river exhibit a more variable and diversified diet in which invertebrates assumed a large importance, especially during high flow s. Barbels from the temporary nonregulated river presented a more uniform diet composed of plant material and detritus, particular ly in drought seasons. Flow regulation affected different flow components in both systems, but the effects on food resourc es and barbels’ diet were similar, resulting in an intra-annual stabilisation of resource availability and fish diet, with a higher consumption of plants and detritus. Changes in fish diet and feeding activity in both nonregulated and regulated rivers were strongly associated with the seasonal variability of streamflow components, particularly between low- and high-flow periods, and with the reduction in flow variability in the case of dam regulation. Results from this study can be used to improve guidelines for flow requirement implementation

    A Santa Casa da Misericórdia do Rio de Janeiro nos séculos XVI a XIX Rio de Janeiro's Holy House of Mercy from the 16th to the 19th centuries

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    Este artigo tem como objetivo apontar as principais transformações ocorridas no espaço e nos prédios da irmandade da Santa Casa da Misericórdia do Rio de Janeiro da sua fundação até o século XIX, relacionando-as a alguns dos possíveis significados sociais dessas mudanças.<br>The present article aims at showing the main changes taken place in the buildings and the surrounding areas of Rio de Janeiro's Holy House of Mercy from its foundation to the 19th century, relating them to some of the possible social meanings of such changes

    Religiosidade e suas manifestações no espaço urbano de Salvador

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    O Brasil foi descoberto e ocupado sob a égide do cristianismo, reforçado pelo movimento da Contrarreforma Católica. Promovida pela Igreja Católica Apostólica Romana, opunha-se à Reforma Protestante, reafirmava o uso das imagens e ditava uma série de normas a serem seguidas pelos fiéis, expressas nas Constituições Primeiras do Arcebispado da Bahia, de 1707. A Contrarreforma enfatizou a importância das manifestações públicas de fé, a maior participação da população nas coisas da Igreja. As procissões foram o exemplo típico dessas manifestações, promovidas, especialmente, pelas Irmandades e/ou ordens terceiras leigas. Nas procissões, ou cenários públicos de fé, as imagens das figuras santas e festas barrocas tiveram um papel primordial. Dentre elas, se resgatou um uso medieval das marionetes - acrescido da dramaticidade tirada do teatro de ópera -, transformadas em imagens de roca e de vestir. Estas constituíram, sobretudo no século XVIII, instrumentos eficientes para despertar a fé de leigos e religiosos. As ruas e praças - do antigo centro histórico da cidade do Salvador - serviram de grande cenário, no qual evoluía a maior parte das procissões. Destacavam-se as procissões dos Mistérios da Paixão, de Corpus Christi ou cenas correlatas, em datas fixas ou móveis, ao lado da multiplicação das representações da Santíssima Trindade, especialmente a cruz ou o Cristo Crucificado
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