In this study, the onion (Allium cepa) root test was used to evaluate the genotoxicity of the Pitimbu River (Natal city, Brazil) surface water. The water was collected at five sampling sites along the river and one sample was obtained after the treatment (flocculation, chlorination and pH correction) of the river water for human consumption. All raw river water samples increased the frequency of chromosomal abnormalities and/or micronuclei and two of the water samples produced alterations in the mitotic index of the root cells. Two of the water samples also altered root growth and two produced morphological modifications in the A. cepa roots. Water collected from a site near an industrial area was the most consistently toxic and genotoxic of the samples. Although the water chlorinated for human consumption was not genotoxic, the data indicate that surface water from the Pitimbu River contains toxic and genotoxic compounds that potentially may impact this aquatic ecosystem.

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Processos socioeconômicos e tecnológicos a partir dos anos 70, século XX afetaram instituições sociais, como o casamento e a família. A fragmentação, a efemeridade e o caótico, aumentaram violentamente de intensidade num contexto que se tornaria globalizado. Analisa-se resultados referentes à relação entre conjugalidade e mudança social, o desvendar dos efeitos do Turismo Afetivo que explicita a reconstituição de arranjos familiares, dinâmicas, trajetórias, relações sociais de gênero, entre Casais Binacionais na cidade de Natal, Nordeste Brasileiro.Palavras Chaves: Família; Conjugalidade; Gênero; Migração; Interculturalidade Socioeconomic and technological processes from the seventies, twentieth century, have affected social institutions, like marriage and family. The fragmentation, the ephemerality and the chaotic were greatly increased in a context that would become globalized. The results are analyzed regarding the relationship between marital and social change, the unveiling of the Affective Tourism effects that make explicit the reconstitution of family arrangements, dynamics, trajectories and social relationships of gender among binational couples in the city of Natal, Northeast Brazil.

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