An analysis of chromosomal aberrations (structural and numerical) and sister chromatid exchange (SCE) was carried out on 16 people exposed to methylmercury through eating fish caught in Cartagena Bay (Columbia), an area of known methylmercury contamination. Fourteen people whose diet consisted mainly of fish caught in another, noncontaminated area of the Atlantic acted as controls. The results showed a significant difference between the experimental and control groups in methylmercury (MM) concentrations measured in hair and peripheral blood. Subsequently, significant differences between levels of organic mercury in blood and hair were found when all the individuals studied were classified in two groups according to their blood mercury levels. When achromatic lesions were included, the frequency of structural chromosome aberrations differed significantly between the exposed and control groups. Furthermore, a significant correlation (p less than 0.05) was found between structural chromosome aberrations and groups (exposed and control). When achromatic lesions were excluded from the analyses, these differences were not found. There was a significant correlation between SCE and age. This is the first report of a study on the frequency of SCE in a population exposed to methylmercury.
Las capacidades materiales y simbólicas de las poblaciones para hacer frente a situaciones socioambientales catastróficas o de crisis o extremas, se perciben y valoran culturalmente, quedando expresadas en el modo de integrar el riesgo o la anomalía en su adaptación, es decir, en su modo de desarrollo. Desde la teoría del riesgo esto se define como vulnerabilidad social, mientras que desde la gestión pública del desarrollo social, la vulnerabilidad quedaría definida con relación a las capacidades de las poblaciones para mejorar sus condiciones de reproducción social y económica en la normalidad, y bajo situaciones de excepción como frente a amenazas físico-naturales o socioeconómicas. Aquí nos proponemos explorar la correlación entre la situación vulnerable de la población de la estepa patagónica en la provincia de Río Negro, bajo la presión de eventos extremos como la sequía y la caída de cenizas volcánicas, y los proyectos gubernamentales que se aplican en el área, sin incorporar un enfoque que atienda la complejidad ambiental.Palabras claves: Estepa Patagónica. Gestión del Riesgo.Vulnerabilidad. Adaptación. Comunidades AborígenesSocial development under drought and ashes AbstractMaterial and symbolic capacity of populations to confront with catastrophic social and environmental situations or crisis or extreme, are perceived and valued culturally, are being expressed on how to integrate the risk or abnormality in their adaptation, for example, in their way of developing. From the theory of risk which is defined as social vulnerability, while from the public management of social development, the vulnerability would be defined in relation to the capacity of the people to improve their social and economic reproduction in normal situations and under exception as against physical-natural or socio-economic threats. Here we propose to explore the correlation between the vulnerability of the population of the steppe in the province of Río Negro, under the pressure of extreme events such as drought and volcanic ash fall, and government projects that apply in the area without incorporating an approach that addresses environmental complexity.Keywords: Patagonian Steppe. Risk Management. Vulnerability. Adaptation. Aboriginal communities.
En este documento se realiza un análisis resumido del estado de desarrollo del Turismo Rural Comunitario en la Argentina y de la intervención del Estado nacional en la actividad hasta Diciembre de 2015 (fecha en que se produce el cambio de gobierno y de signo político y orientación de la gestión pública). Se presenta sintéticamente el trabajo conjunto y articulado de cuatro ministerios (de Turismo, de Trabajo y Seguridad Social, de Agricultura Ganadería y Pesca, y de Desarrollo Social), en relación con la dotación de instrumentos para el desarrollo sustentable del Turismo Rural Comunitario.
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