Abstract: The Paranhana River, located in Southern Brazil, is one of the major tributaries of the Sinos River basin and receives mainly industrial and domestic effluents. In the present study, water physicochemical and microbiological analyses, condition factor, micronucleus test, gill histopathology and metal bioaccumulation in the muscle of the native fish Bryconamericus iheringii collected at two sites (S1 and S2) of the Paranhana River under different degrees of anthropogenic pressures were assessed in four sampling campaigns. Data from water quality parameters, condition factor, mucous cells proliferation in fish gills and bioaccumulation of chromium and manganese in muscle evidenced higher impacts at S2, whereas a higher genotoxic potential was observed at S1. Gill histopathological alterations were found in fish captured at both sampling sites. Temporal variations in all biomarkers analyzed and bioaccumulation of manganese and nickel were observed at S1, whereas only variations in condition factor, gill alterations and bioaccumulation of manganese and aluminum were found at S2. Our study evidences that S1 is under minor anthropogenic impacts and that the high urbanization at S2 reflects in a poor water quality. Nonetheless, the human consumption of fish from the Paranhana River should be avoided given the high concentrations of cadmium, chromium and lead.

O estudo avalia a toxicidade, citotoxicidade, genotoxicidade e análises físico-químicas e microbiológicas de amostras de águas coletadas em dois pontos (nascente e foz) do Rio da Ilha - um dos principais afluentes do Rio dos Sinos, RS, Brasil - em dois períodos: inverno (2014) e verão (2015), através do bioensaio com Allium cepa que fornece esses dados através da mensuração das raízes dos bulbos, índice mitótico e presença de aberrações cromossômicas. Os resultados demonstraram níveis de citotoxicidade principalmente na foz do rio, e alguns parâmetros (DBO5, fósforo, alumínio, chumbo, ferro, níquel e coliformes termotolerantes) acima da legislação estabelecida, mesmo a região sofrendo pouco impacto de origem antrópica.

This study evaluates the toxicity, cytotoxicity, genotoxicity and physicochemical and microbiological analysis of water samples collected at sites (source and mouth) of the Ilha River -one of the main tributaries of the Sinos River, RS, Brazil - in winter (2014) and summer (2015), by Allium cepa bioassay which provided the data by measuring the roots of the bulbs, mitotic index and presence of chromosomal aberrations. The results show levels of cytotoxicity especially at the mouth of the river, and some parameters (DBO5, phosphorus, aluminum, lead, iron, nickel and fecal coliforms) above the limits established by the Brazilian legislation, despite the localization of the region in an area under minor anthropic impact.

Resumen (analítico): Actualmente la población de adultos y adultas mayores viene aumentando en Brasil, para lo cual hay políticas públicas que atienden sus demandas. La juventud estaba desprotegida de políticas públicas específicas, principalmente acerca de las necesidades de deporte y ocio. En la presente investigación, buscamos identificar las demandas de deporte y ocio de los jóvenes del municipio de Novo Hamburgo, Brasil. De los sesenta jóvenes que respondieron un cuestionario estructurado en el año 2010, 34,7% necesitan más tiempo para sus prácticas, 30,4% mayor infraestructura, 15,3 % locales más accesibles. Novo Hamburgo, Brasil, desarrolla proyectos en el ámbito del deporte y el ocio para esa franja etaria, pero los mismos no atienden a todos los jóvenes, sólo a una población pequeña en condiciones de vulnerabilidad social.

Abstract (analytical): The adult and elderly population of Brazil has increased recently and the country has directed public policies which are in accordance with its demands. Youth have been neglected in specific public policies, in particular when considering the sports and leisure needs. Thus, we aimed to identify the demand for sports and leisure by young people in the city of Novo Hamburgo, Brazil. Sixty young answered a structured questionnaire in 2010, of these, 34.7% answered they need more time for their activities, 30.4% need more infrastructure and 15.3% seek more accessible spaces. Although Novo Hamburgo presents projects and actions in the scope for sports and leisure for this age-group, the projects do not include all young people, but rather a small part, and as such this is considered to be a state of social vulnerability.

Resumo (analítico): Atualmente a população de adultos e idosos vem aumentando e o Brasil apresenta políticas públicas atendendo às suas demandas. A juventude estava negligenciada de políticas públicas específicas, principalmente a cerca das necessidades de esporte/lazer. Assim, com a presente pesquisa, procuramos identificar as demandas de esporte e lazer dos jovens do município de Novo Hamburgo/Brasil. Dos sessenta jovens que responderam um questionário estruturado no ano de 2010, 34,7% responderam que necessitam de mais tempo para suas práticas, 30,4% maior infraestrutura, 15,3 % locais mais acessíveis. Ainda que Novo Hamburgo apresente projetos/ações no âmbito do esporte e lazer para essa faixa etária os mesmos não atendem a todos os jovens, mas sim uma parcela pequena, dita como em estado de vulnerabilidade social.