Fish consumption by traditional subsistence villagers of the Rio Madeira (Amazon): Impact on hair mercury

Autor:	José G. Dórea, Ângelo Gilberto Manzatto, Ronaldo de Almeida, José Vicente Elias Bernardi, Wanderley Rodrigues Bastos, Ronaldo Cavalcante de Oliveira
Rok vydání:	2010
Předmět:	Adult Aging Adolescent Physiology Epidemiology Fish species Food Contamination Biology Toxicology Young Adult Genetics Nutrition transition Animals Humans Child Aged Amazon rainforest Ecology Fishes Public Health Environmental and Occupational Health Infant Subsistence agriculture Environmental Exposure Mercury Middle Aged Fish consumption Diet Hair mercury Child Preschool Epidemiological Monitoring Brazil Environmental Monitoring Hair Amazon basin Food contaminant
Zdroj:	Annals of Human Biology. 37:629-642
ISSN:	1464-5033 0301-4460
DOI:	10.3109/03014460903525177
Popis:	Subsistence ribeirinhos of the Amazon Basin depend on fish for their principal source of protein, but fish availability changes with seasonal high and low waters.To assess taxa and quantity of fish consumed and estimate attendant exposure to methyl-Hg in a traditional subsistence high fish-eating community of the Amazon Basin.120 villagers in 18 households were followed for 6 months (August to February) for weighed portions of fish consumed.Mean daily per capita fish consumption was high (406 g/day) with fish meals ranging from 4 to 14 times/week and an integrated yearly consumption of 148.2 kg/person. Median total-Hg concentrations in fish ranged from 0.011 to 0.409 ppm; six of the more consumed fish species comprised more than 50% of the fish consumed. The villagers mean hair-Hg concentration was high (17.4 +/- 11.5 microg/g), with both inter- and intra-household variation despite similar high fish consumption; only 7% showed hair-Hg concentrations5 microg/g, but 75% had hair-Hg levels above 10 microg/g. Maternal hair-Hg was significantly correlated with respective children's hair-Hg (Spearman r = 0.5390; p0.0001). The high daily fish intake of these villagers is predominantly of species with much lower Hg concentrations.In Amazonian lifestyle of ribeirinho communities traditional fish consumption is high and depends on available species; fish is also the principal via of meHg exposure and attendant hair-Hg concentrations.
Databáze:	OpenAIRE
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