Repositorio Institucional – Biblioteca Digital

    Carbamazepine Degradation Mediated by Light in the Presence of Humic Substances-Coated Magnetite Nanoparticles

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    The use of iron-based nanomaterials for environmental remediation processes has recently received considerable attention. Here, we employed core-shell magnetite-humic acids nanoparticles as a heterogeneous photosensitizer and iron source in photo-Fenton reaction for the degradation of the psychiatric drug carbamazepine (CBZ). CBZ showed low photodegradation rates in the presence of the magnetic nanoparticles, whereas the addition of hydrogen peroxide at pH = 3 to the system drastically increased the abatement of the contaminant. The measured Fe2+ and Fe3+ profiles point to the generation of Fe3+ at the surface of the nanoparticles, indicating a heterogeneous oxidation of the contaminant mediated by hydroxyl radicals. Products with a higher transformation degree were observed in the photo-Fenton procedure and support the attack of the HO• radical on the CBZ molecule. Promising results encourage the use of the nanoparticles as efficient iron sources with enhanced magnet-sensitive properties, suitable for applications in photo-Fenton treatments for the purification of wastewater.EEA BalcarceFil: Aparicio, Francisca .Universidad Nacional de La Plata. Facultad de Ciencias Exactas, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires; ArgentinaFil: Escalada, Juan Pablo. Universidad Nacional de la Patagonia Austral. Unidad Académica Río Gallegos; Argentina.Fil: De Gerónimo, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: García Einschlag, Fernando. Universidad Nacional de La Plata. Facultad de Ciencias Exactas, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires; ArgentinaFil: Magnacca, Giuliana. Università di Torino. Dipartimento di Chimica and NIS Inter-departmental Centre; ItaliaFil: Carlos, Luciano. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina.Fil: Mártire, Daniel. Universidad Nacional de La Plata. Facultad de Ciencias Exactas, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires; Argentina

    Camino a la Salud Ambiental

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    Distintos países empiezan a aplicar medidas de protección ambiental relacionadas con la medición de la huella de carbono en los productos que se comercializan. Peligros y beneficios potenciales para la Argentina y la región.Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTAFil: Terreno, Felicitas Malvinas. Instituto Nacional de Tecnología Agropecuaria (INTA). Dirección Nacional Asistente de Sistemas de Información, Comunicación y Calidad. Gerencia de Comunicación e Imagen Institucional; Argentin

    P0 protein of cotton leafroll dwarf virus-atypical isolate is a weak RNA silencing suppressor and the avirulence determinant that breaks the cotton Cbd gene-based resistance

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    Cotton blue disease (CBD) is the most important disease present in cotton crops in South America and cotton leafroll dwarf virus (CLRDV) is the causal agent. The disease has been controlled by sowing cotton varieties resistant to CLRDV. However, in the 2009/10 growing season, an outbreak due to an atypical CLRDV isolate (CLRDV‐at) occurred in northwest Argentina. Although CLRDV and CLRDV‐at genomes are very closely related, the symptoms they produce in cotton plants are quite different. P0 is the most divergent protein between the isolates and in CLRDV is a silencing suppressor protein. This work characterized the silencing suppressor activity of the P0 protein encoded by CLRDV‐at (P0CL‐at) and evaluated its role in Cbd‐resistance break in cotton plants. It was demonstrated that P0CL‐at, despite having a mutation in the consensus of the F‐box‐like motif, was able to suppress local RNA silencing, but displayed lower activity than P0CL. P0CL and P0CL‐at showed no differences in the interaction with Gossypium hirsutum SKP1 orthologue (GSK1) and Nicotiana benthamiana SKP1 and both P0 proteins triggered destabilization of ARGONAUTE1. However, when the ability to enhance PVX symptoms was evaluated, P0CL‐at was shown to be a weaker pathogenicity factor than P0CL in N. benthamiana. Interestingly, trans‐expressed P0CL‐at enabled CLRDV to systemically infect CBD‐resistant plants, and a chimeric CLRDV‐P0CL‐at infectious clone succeeded in establishing infection in CBD‐resistant cotton varieties with symptoms resembling those produced by CLRDV‐at. These results strongly suggest that P0CL‐at is the avirulence (Avr) determinant involved in breaking cotton Cbd gene‐based resistance.Instituto de BiotecnologíaFil: Agrofoglio, Yamila Carla. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Delfosse, Veronica Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Casse, Maria Florencia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Sáenz Peña; ArgentinaFil: Hopp, Horacio Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bonacic Kresic, Iván. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Sáenz Peña; ArgentinaFil: Ziegler-Graff, Véronique. Université de Strasbourg. Institut de Biologie Moléculaire des Plantes; FranciaFil: Distefano, Ana Julia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

    Evaluación del rendimiento de forraje y grano de triticales y tricepiros

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    En Santa Rosa (La Pampa), se evaluó entre 2008 y 2010 el rendimiento de forraje de 22 genotipos de triticales y tricepiros y de 17 genotipos en la producción de grano. Se utilizó un diseño en bloques completos al azar con tres repeticiones y siembra en parcela estándar. Las diferencias entre ambientes y genotipos fueron evaluadas mediante Análisis de la Variancia Conjunto y se utilizó la prueba de Diferencias Mínimas Significativas (α=0,05). El promedio del rendimiento de materia seca del trienio fue para los triticales de 2508 kg ha-1 y para los tricepiros de 2007 kg ha-1. Los triticales superaron en un 25% a los tricepiros. En la producción de grano se detectó un comportamiento diferencial de las líneas en cada año de evaluación. El promedio del rendimiento de grano del trienio fue para los triticales de 1945 kg ha-1 y para los tricepiros de 1442 kg ha-1. Los triticales superaron en rendimiento de grano en un 35% a los tricepiros. Para los materiales evaluados se evidenció una mayor estabilidad en los rendimientos de forraje que en la producción de granos. La mejora genética habría sido más efectiva en triticales. No obstante, se han detectado líneas de tricepiro con rendimientos similares a triticales.ATwenty-two genotypes of triticales and tricepiros were assessed from 2008 to 2010 in Santa Rosa (La Pampa) for their forage yield and seventeen for grain production. A randomized complete block with three replicates and standard plot planting was used. The differences between environments and genotypes were evaluated by an overall analysis of variance and least significant difference test (α = 0.05). The average dry matter yield along the three years for triticales was 2508 kg ha-1 and for tricepiros 2007 kg ha-1. Triticales thus exceeded 25% the value obtained with tricepiros. The grain yield showed a differential behavior of the lines in each year of assessment. The average grain yield of triticales was, along the three years, 1945 kg ha-1 and in the case of tricepiros, 1442 kg ha-1. The triticales grain yield exceeded 35% that of the tricepiros. For the materials evaluated, greater stability in forage yields than in grain production was found. Genetic improvement would have been more effective in triticales; however, lines of tricepiros with yields similar to those of the triticales have been detected.Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTAFil: Castro, N.R. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Rufach, Hernán. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Capellino, Franco Andrés. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Domínguez, R. Universidad Nacional de La Pampa. Facultad de Agronomía; ArgentinaFil: Paccapelo, Héctor Antonio. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentin

    Cambios en las representaciones locales de ruralidad en un poblado del periurbano bonaerense ante el avance de la urbanización : el caso de Dique Luján, partido de Tigre (2006 - 2013)

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    Tesis para obtener el grado de Magister en área Desarrollo Rural, de la Universidad de Buenos Aires, en 2014El presente trabajo analiza cómo se han transformado en los últimos años las representaciones de ruralidad de los pobladores de una localidad periurbana de la región metropolitana de Buenos Aires (Dique Luján) producida como consecuencia del avance de la urbanización. La localidad ha experimentado un rápido avance de las urbanizaciones cerradas (barrios cerrados/countries) en el último decenio, al igual que la construcción de obras de infraestructura como el asfaltado de calles y la construcción de un puente de acceso, entre otras. Dicho proceso que se está dando en la localidad viene repitiéndose en distintos lugares del Gran Buenos Aires, al igual que en otros poblados periurbanos o cercanos a las grandes ciudades del país. Estas transformaciones traen aparejadas nuevas lógicas propias del mundo urbano, lo que está generando, al menos en parte de la población local, incertidumbre sobre cómo incidirán en las relaciones de sociabilidad tradicional preexistente. Se identifica un proceso de gentrificación suburbana así como la pérdida de servicios ecosistémicos. El relevamiento, de tipo etnográfico, consistió en la realización de trabajo de campo intensivo, mediante observaciones y entrevistas en profundidad a distintos sujetos sociales. El trabajo permitió reconstruir, con alto grado de detalle, la trama social local identificando y diferenciando las posturas adoptadas por distintos sujetos, así como las distintas representaciones sociales construídas por ellos. Se estima que los resultados obtenidos se constituirán en un insumo para la aplicación de programas de intervención del INTA, así como para el esclarecimiento de algunos aspectos ligados al desarrollo local, que contribuyan a las políticas de intervención del municipio en la localidadThis paper discusses how have been transformed in recent years the representations of rurality of the residents of a locality peri-urban Metropolitan Region of Buenos Aires (Dique Luján) produced as a result of the progress of urbanization. The town has experienced a rapid advance of gated communities (neighborhoods closed/countries) in the last decade, as well as the construction of infrastructure works as the paved streets and the construction of an access bridge, among others. This process which is taking place in the locality is repeating itself in different places of the Gran Buenos Aires, as well as in other villages peri or near large cities of the country. These changes bring with them new logical own of the urban world, which is generating, at least in part of the local population, uncertainty about how they will influence the relations existing traditional sociability. A process of suburban gentrification and the loss of ecosystem services is identified. The survey of ethnographic, consisted in the realization of intensive field work, through observations and in-depth interviews with various social subjects. The work allowed us to reconstruct, with high degree of detail, the social fabric local identifying and differentiating the positions taken by different subjects, as well as the different social representations constructed by them. It is estimated that the results obtained will be in an input for the implementation of programs of intervention of the INTA, as well as for the clarification of some aspects linked to the local development, which will contribute to the policies of intervention of the village in the locality.EEA AMBAFil: Leveratto, Claudio Jorge. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Área Metropolitana de Buenos Aires. Agencia De Extensión Rural San Martín; Argentin

    Control de la brucelosis caprina mediante el uso de la vacuna Brucella melitensis REV 1 en la provincia de Mendoza, Argentina. -Evaluación de 10 años de vacunación-

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    Se llevó adelante un programa de control de la brucelosis caprina en la provincia de Mendoza, Argentina, basado en la vacunación de todas las cabras adultas y cabrillas, año por medio durante 10 años. Se utilizó la vacuna Brucella melitensis REV 1 aplicada en la conjuntiva ocular. Se logró una reducción de la prevalencia promedio del 69% en cabras adultas. En cabrillas, se detectó solo un 0.1% de animales positivos. En forma análoga a la reducción de la brucelosis en caprinos, se detectó una disminución en la presentación de casos humanos de brucelosis, según la información suministrada por el Ministerio de Salud Publica provincial.A control program on goat brucellosis, based on massive vaccination of adult and juvenile female goat during 10 years was carried out in Mendoza province, Argentina. The conjunctival Brucella melitensis REV 1 vaccine was used. A reduction of 69% of prevalence was achieved in adult female goats. In juvenile female goats only 0.1% of positive animals were detected. In the same manner, a reduction on human prevalence of brucellosis was observed, according the Provincial Ministry of Public Health.Estación Experimental Agropecuaria BarilocheFil: Robles, Carlos Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Area de Producción Animal. Grupo de Sanidad Animal; ArgentinaFil: Rivero, Sergio Raul. Comisión Provincial de Sanidad Animal de Mendoza; ArgentinaFil: Chodilef, Maria Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Area de Producción Animal. Grupo de Sanidad Animal; Argentin

    Avaliação dos comportamentos de pastejo e suas relações com caracteres individuais dos bovinos de corte

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    Tesis para obtener el grado de Doctora en Zootecnia, orientación en Etología y Bienestar Animal, de Universidade Estadual Paulista (UNESP), en 2016O objetivo principal foi identificar relações entre comportamento durante o pastejo e temperamento dos bovinos de corte, com objetivos específicos de: predizer o comportamento a partir de informação de dispositivos de precisão e, verificar a influência do temperamento sobre o comportamento durante o pastejo de bovinos mantidos em pastagens tropicais suplementadas (Brachiaria brizantha - cv. Marandu). Inicialmente comparou-se dados comportamentais de observação visual dos bovinos com dados dos colares GSP com sensores de inclinação (3300 LR, Loteck®), determinando por meio de árvores de decisão os limiares de predição e classificação dos comportamentos. Quarenta e oito tourinhos Nelore (PV = 231 ± 19,6 kg; de 10 - 12 meses), foram recriados em 14 piquetes recebendo um dos um dos seis planos nutricionais, resultantes de três alturas de pastagens (15, 25 ou 35 cm) com dos tipos de suplementos (minerais ou proteína), durante as águas. Doze animais por ciclo levaram aleatoriamente um colar GPS durante 24 horas por 7 dias. Foram encontradas associações entre dados do colar e observações visuais, com variação do 75,11% explicada pelos componentes principais (PC1 e PC2). A variável do colar cabeça baixa (%), mostrou alta correlação (P <0,0001) com pastejo (GRA, r = 0.76) e com rumia (RUM, r = - 0.78); entretanto variáveis do colar: X-act, Y-act, somatória de ambos e distância percorrida, tiveram baixa associação com comportamentos observados. O modelo de árvore de decisão de menor erro de classificação (13,98%), foi escolhido para prever o comportamento animal durante intervalos não observados; apresentando alta precisão para GRA (90%) e RUM (76%) e menor para não-pastejo (Not-gra, 59%). Determinando-se a previsão média total de tempo diário para GRA (38,8%), RUM (44,2%) e Não-gra (17%). Não foram encontradas diferenças (P> 0,05) dos comportamentos previstos entre os diferentes planos nutricionais. Sugerindo que, colares GPS com sensores de inclinação fornecem informações aceitáveis para prever e classificar os comportamentos de bovinos em pastagens. Seguidamente, avaliou-se a associação do temperamento com a produtividade (GMD e PVfinal) e o comportamento dos bovinos (tempo de GRA, RUM, Not-gra e caminhada diária). Inicialmente 126 novilhos foram mantidos em 18 piquetes das mesmas características ao estudo anterior. Todos os animais foram pesados individualmente no início e final do estudo, sendo avaliado o temperamento por escore de reatividade visual (RS), enquanto o animal foi mantido na balança e velocidade de saída (FS, m/s) após de sair da balança. Para avaliar o efeito do temperamento sobre o comportamento utilizou-se os tempos previstos dos comportamentos descritos previamente. O temperamento mostrou baixa relação de PVfinal com RS (rs = 0,18; P = 0,05), entretanto não teve efeitos sobre GMD (P> 0,05). Encontrou-se efeito sobre os tempos previstos dos comportamentos (P <0,0001) Not-gra avaliado por ambos métodos (FS e RS); RUM avaliado por FS; GRA com apenas tendência negativa (P = 0.07) avaliado por FS. Com base nestes resultados, demostrou-se que o temperamento bovino, avaliado pelas respostas ao manejo, não representa diretamente o comportamento durante o pastejo de bovinos mantidos em pastagem suplementadas, sugerindo que estas características provavelmente sejam independentes.The main aim was to identify the possible relationship between behaviour during the grazing and beef cattle temperament, specific aims were: predict the behaviour from information given by precision devices, and verify the influence of temperament on the behaviour cattle during grazing in supplemented tropical pastures (Brachiaria - Marandu cv.). Initially, compared cattle behaviour visual observed and data from collars GSP with built-in tilt sensors (LR 3300, Loteck®), it was determined by decision trees the thresholds for the prediction and classification of behaviour cattle. Forty-eight young bulls Nellore (BW = 231 ± 19.6 kg; 10 to 12 mo-old) were breeding in 14 paddocks that received one of the six nutritional plans, resulting from three heights of pastures (15, 25 or 35 cm) and the types of supplements (minerals or protein), on season wet. Twelve animals randomly per cycle wear a GPS collar for 24 hours for 7 days. Found associations among the data behavioural visual observations and from GPS collars, where75.11% explained by the principal components (PC1 and PC2). The variable head down (%) showed high correlation (P 0.05) of behaviour referred among different nutritional plans. Results suggested, that GPS collars with tilt sensors provide acceptable information to predict and classify the cattle behaviour in pastures. Followed, was assessment the association of temperament with productivity (ADG and BWfinal) and behaviour (GRA, RUM, Not-gra and daily distance walked). Initially 126 steers were kept in 18 paddocks of the same characteristics the previous study. All animals were individually weighing at the beginning and end of the study, while assess temperament by two usual test: visual reactivity score (RS) while the animal was kept inside the squeeze chute; and flight speed (FS, m.s-1) velocity to exit the squeeze chute. Furthermore, to evaluate the effect of temperament on the behaviour we used the of predicted behaviors time described previously. The temperament shows low correlation BWfinal with RS (rs = 0.18; P = 0.05), but had no effect on ADG (P > 0.05). Was found effect on the distance walked, the behavior predicted time (P < 0.0001) where Not-gra assessed by both methods (FS and RS); RUM assessed by FS and GRA with only negative tendency (P = 0.07) assessed by FS. Based on these results, it demonstrated that the cattle temperament, measured by responses to management, is not directly the behavior during the grazing of cattle kept on pasture supplemented, suggesting that these characteristics are likely to be independent.EEA Colonia BenitezFil: Aguilar, Natalia Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Colonia Benítez; Argentin

    Sistemas articulados de múltiple prestación cultural para la vid

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    SAMPc n° 2 es la variante, con ampliación de utilidades, de un sistema de conducción de la vid que el INTA viene desarrollando hace cinco años. A aquella innovación del Y bm INTA, como sistema articulado de múltiple prestación cultural, se suma la posibilidad de adaptar al dispositivo una malla antigranizo. Construido con materiales de bajo costo, la ingeniería del SAMPc permite además la transformación de espalderas y parrales.EEA MendozaFil: Del Monte, Raul Feliciano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; ArgentinaFil: Ambrogetti, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina.Fil: Prieto, Jorge Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentin

    Microbial processing of plant remains is co‐limited by multiple nutrients in global grasslands

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    Microbial processing of aggregate‐unprotected organic matter inputs is key for soil fertility, long‐term ecosystem carbon and nutrient sequestration and sustainable agriculture. We investigated the effects of adding multiple nutrients (nitrogen, phosphorus and potassium plus nine essential macro‐ and micro‐nutrients) on decomposition and biochemical transformation of standard plant materials buried in 21 grasslands from four continents. Addition of multiple nutrients weakly but consistently increased decomposition and biochemical transformation of plant remains during the peak‐season, concurrent with changes in microbial exoenzymatic activity. Higher mean annual precipitation and lower mean annual temperature were the main climatic drivers of higher decomposition rates, while biochemical transformation of plant remains was negatively related to temperature of the wettest quarter. Nutrients enhanced decomposition most at cool, high rainfall sites, indicating that in a warmer and drier future fertilized grassland soils will have an even more limited potential for microbial processing of plant remains.EEA Santa CruzFil: Ochoa-Hueso, Raúl. Universidad de Cádiz. Department of Biology; EspañaFil: Borer, Elizabeth T. University of Minnesota. Department of Ecology, Evolution and Behavior; Estados UnidosFil: Seabloom, Eric William. University of Minnesota. Department of Ecology, Evolution and Behavior; Estados UnidosFil: Hobbie, Sarah E. University of Minnesota. Department of Ecology, Evolution and Behavior; Estados UnidosFil: Risch, Anita C. Swiss Federal Institute for Forest, Snow and Landscape Research; SuizaFil: Collins, Scott. University of New Mexico. Department of Biology; Estados UnidosFil: Alberti, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Bahamonde, Héctor Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Brown, Cynthia S. Colorado State University. Department of Bioagricultural Sciences and Pest Management; Estados UnidosFil: Caldeira, Maria C. Universidad de Lisboa. School of Agriculture. Forest Research Centre; PortugalFil: Daleo, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Dickman, Chris R. University of Sydney. School of Life and Environmental Sciences. Desert Ecology Research Group; AustraliaFil: Ebeling, Anne. University of Jena. Institute of Ecology and Evolution; AlemaniaFil: Eisenhauer, Nico. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Alemania. Leipzig University. Institute of Biology; AlemaniaFil: Esch, Ellen H. University of Guelph. Department of Integrative Biology; CanadáFil: Eskelinen, Anu. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Alemania. Helmholtz Center for Environmental Research. Department of Physiological Diversity; Alemania. University of Oulu. Ecology and Genetics; FinlandiaFil: Fernández, Victoria. Universidad Técnica de Madrid. School of Forest Engineering. Forest Genetics and Ecophysiology Research Group; EspañaFil: Güsewell, Sabine. Institute of Integrative Biology; SuizaFil: Gutierrez-Larruga, Blanca. Universidad Autónoma de Madrid. Departamento de Biología; EspañaFil: Hofmockel, Kirsten S. Pacific Northwest National Laboratory. Earth and Biological Sciences Directorate; Estados Unidos. Iowa State University. Department of Ecology, Evolution, and Organismal Biology; Estados UnidosFil: Laungani, Ramesh. Doane University. Department of Biology; Estados UnidosFil: Lind, Eric M. University of Minnesota. Department of Ecology, Evolution and Behavior; Estados UnidosFil: López, Andrea. University of New Mexico. Department of Biology; Estados UnidosFil: McCulley, Rebecca L. University of Kentucky. Department of Plant and Soil Sciences; Estados UnidosFil: Moore, Joslin L. Monash University. School of Biological Sciences; AustraliaFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Power, Sally A. Western Sydney University. Hawkesbury Institute for the Environment; AustraliaFil: Price, Jodi N. Charles Sturt University. Institute of Land, Water and Society; AustraliaFil: Prober, Suzanne M. CSIRO Land and Water; AustraliaFil: Roscher, Christiane. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Alemania. Helmholtz Center for Environmental Research. Department of Physiological Diversity; AlemaniaFil: Sarneel, Judith M. Umeå University. Department of Ecology and Environmental Science; SueciaFil: Schütz, Martin. Swiss Federal Institute for Forest, Snow and Landscape Research; SuizaFil: Siebert, Julia. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Alemania. Leipzig University. Institute of Biology; AlemaniaFil: Standish, Rachel J. Murdoch University. Environmental and Conservation Sciences; AustraliaFil: Velasco Ayuso, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Virtanen, Risto. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Alemania. Helmholtz Center for Environmental Research. Department of Physiological Diversity; Alemania. University of Oulu. Ecology and Genetics; FinlandiaFil: Wardle, Glenda M. University of Sydney. School of Life and Environmental Sciences. Desert Ecology Research Group; AustraliaFil: Wiehl, Georg. CSIRO Land and Water; AustraliaFil: Yahdjian, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Zamin, Tara. Monash University. School of Biological Sciences; Australi

    Meta-analysis of risk factors for canine leptospirosis

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    Leptospirosis is one of the most widespread zoonotic diseases, with more than one million human cases reported worldwide every year. Dogs could develop infections that range from asymptomatic to severe, and shed leptospires with their urine. Given their close contact with humans, dogs may act both as epidemiological links or as sentinels of pathogenic leptospires in the environment. The aims of our study were to quantitatively summarize the overall prevalence of leptospiral antibodies and to identify factors associated with the probabilities of infection. We searched the electronic databases Scopus, PubMed, PMC and ScienceDirect for observational studies on canine leptospirosis published between 1989 and December 2019 and written in English, Spanish or Portuguese. We fitted a series of multilevel random effects meta-analysis models to estimate the prevalence of antibodies against Leptospira for different types of dogs, health statuses, diagnostic tests, geographic regions and income categories of the countries. We also fitted a number of random effects meta-analysis models to estimate the pooled odds-ratio of factors associated with canine leptospirosis. After removing duplicates and articles not meeting selection criteria, a total of 130 studies in 91 articles were included in this work. We found lower seroprevalence estimates in North America countries () and other high income countries (). We also found higher probabilities of leptospiral infection in adult (), male dogs with access to the streets (). Identifying the profile of dogs that are more exposed to leptospirosis could be useful in the design of public health strategies for the prevention and control of leptospirosis.EEA RafaelaFil: Ricardo, Tamara. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales; ArgentinaFil: Previtali, M. Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias. Departamento de Ciencias Naturales; ArgentinaFil: Signorini, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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