A refeição familiar desempenha uma função estruturante das relações sociais, mas os convívios comensais de jovens órfãos com suas famílias podem ser afetados no contexto da orfandade pelo HIV/AIDS. Como parte de um projeto de pesquisa temático sobre Estigma e Discriminação relacionados ao HIV/AIDS, realizou-se um estudo para apreender os aspectos condicionantes das refeições familiares e caracterizar os convívios comensais de jovens órfãos pela AIDS em São Paulo. Portanto, realizou-se um estudo transversal com abordagem qualitativa e quantitativa a partir de perspectiva interdisciplinar entre antropologia da alimentação, saúde pública e ecologia cultural. Na fase qualitativa, foram utilizadas 19 entrevistas com jovens órfãos pela AIDS. As narrativas foram percorridas em busca de categorias contextuais e da sincronia de convívios espaciais e temporais para refeições. Na abordagem quantitativa, utilizou-se amostra com 276 jovens órfãos pela AIDS. Foram realizadas análises descritivas dos dados com distribuição de frequências e posteriormente foi aplicado o teste de Rao Scott. Os testes foram conduzidos em nível de significância de 5% e poder de teste de 80%. Para realização destas análises utilizou-se do programa STATA 10.0. As metodologias foram consideradas complementares e o processo de construção da análise foi desenvolvido a partir da ideia de artesanato intelectual proposta por Wright Mills (2009). Os resultados demonstraram que (1) a refeição familiar reflete a estrutura familiar; (2) a refeição atua como eixo da sincronia familiar em ritmos temporais e espaciais, e (3) as refeições refletem as mudanças nos convívios contemporâneos e os compromissos temporais com a família favorecem a adaptabilidade do jovem órfão em contexto urbano. / The family meal plays a structuring role in social relations, but commensal gatherings of young orphans and their families might be affected in the context of orphaned by HIV/AIDS. As part of a themed research project on Stigma and Discrimination Related to HIV/AIDS, this study was conducted in order to understand all conditioning aspects of family meals and to characterize commensal gatherings of young people orphaned by AIDS in São Paulo. For such, we performed a crosssectional study with qualitative and quantitative approaches from an interdisciplinary perspective between food anthropology, public health and cultural ecology. In the qualitative phase, interviews with 19 young people orphaned by AIDS were used. The narratives were covered in search of contextual categories and synchrony of spatial and temporal gatherings for meals. The quantitative approach was used to sample 276 young people orphaned by AIDS. Descriptive analyzes of the data with frequency distribution were performed and then the Rao Scott test used. Tests were conducted at a significance level of 5% and power of 80%. For these analyzes we used the STATA 10.0 software. The methodologies were complementary and stemmed from the idea of intellectual craft proposed by Wright Mills (2009). The results showed that (1) the family meal reflects the family structure; (2) the meal acts as an axis of family synchrony in spatial and temporal rhythms, and (3) meals reflect changes in contemporary gatherings and family time commitments promote the adaptability of the young orphan in an urban context.

The objects of this study were to investigate the differences of total mercury(THg), organic mercury(OHg) concentrations in the muscles of albacore and bigeye tuna from the Pacific Ocean, and the THg and OHg concentration in the livers , and the trace elements (Cu, Fe, Mn and Zn) in the muscles and livers of albacore, in order to evaluate the bioaccumulative status of the oceanic migratory fishes. Meanwhile, The relationships between mercury concentration and size (length and weight) and age were established, and the differences of mercury concentrations in the tuna between species and geography were examined. And that the safety consumption level was also discussed. One hundred eighty-five albacore and 134 bigeye tuna were sampled from the period October 2001 to April 2006 and from September 2005 to November 2006, respectively, in the Western and Central Pacific Ocean. The results showed that the average THg (mg/kg flesh wt.) and OHg (mg/kg flesh wt.) of muscles were 0.435¡Ó0.145 and 0.279¡Ó0.087, respectively, for albacore, and 0.935¡Ó0.655 and 0.544¡Ó0.396, respectively, for bigeye tuna. The THg and OHg of livers of albacore were 0.426¡Ó0.363 and 0.193¡Ó0.121, respectively. The average OHg percentages of the THg in albacore and bigeye tuna were 67¡Ó19 % and 62¡Ó20 %, respectively. Except there was no significant correlation between OHg and age in the liver of albacore, the THg and OHg in the muscles, and THg in the livers of albacore, and THg in the muscles of bigeye tuna showed a positive correlation with size and age. The THg and OHg levels in the muscles of albacore were lower than those of bigeye tuna, and the accumulative rates of THg and OHg in albacore were lower than those in bigeye tuna. No significant different of muscles-THg and -OHg concentrations of albacore from the four samplind areas. However, the THg and OHg levels in muscle of bigeye tuna showed that north group higher than those in equator. The concentrations of THg were similar in muscle and liver of albacore, but those OHg, Cu, Fe, Mn and Zn concentrations in liver were significantly higher than those in muscle. A detoxificated mechanism may be commenced when the concentration of THg in liver of albacore exceed 0.8 mg/kg, to maintain the muscle concentration of THg at a level about 0.7 mg/kg. The OHg concentrations of all albacore and 88% of bigeye tuna were below WHO food safety standard for migratory fishes(1.0 mg/kg). The consumption amount of albacore and bigeye tuna were no more than 300 and 150g, respectively, will not exceesed the PTWI(provisional tolerable weekly intake) set by WHO, that will not cause any health threat for consumer.

A refeição familiar desempenha uma função estruturante das relações sociais, mas os convívios comensais de jovens órfãos com suas famílias podem ser afetados no contexto da orfandade pelo HIV/AIDS. Como parte de um projeto de pesquisa temático sobre Estigma e Discriminação relacionados ao HIV/AIDS, realizou-se um estudo para apreender os aspectos condicionantes das refeições familiares e caracterizar os convívios comensais de jovens órfãos pela AIDS em São Paulo. Portanto, realizou-se um estudo transversal com abordagem qualitativa e quantitativa a partir de perspectiva interdisciplinar entre antropologia da alimentação, saúde pública e ecologia cultural. Na fase qualitativa, foram utilizadas 19 entrevistas com jovens órfãos pela AIDS. As narrativas foram percorridas em busca de categorias contextuais e da sincronia de convívios espaciais e temporais para refeições. Na abordagem quantitativa, utilizou-se amostra com 276 jovens órfãos pela AIDS. Foram realizadas análises descritivas dos dados com distribuição de frequências e posteriormente foi aplicado o teste de Rao Scott. Os testes foram conduzidos em nível de significância de 5% e poder de teste de 80%. Para realização destas análises utilizou-se do programa STATA 10.0. As metodologias foram consideradas complementares e o processo de construção da análise foi desenvolvido a partir da ideia de artesanato intelectual proposta por Wright Mills (2009). Os resultados demonstraram que (1) a refeição familiar reflete a estrutura familiar; (2) a refeição atua como eixo da sincronia familiar em ritmos temporais e espaciais, e (3) as refeições refletem as mudanças nos convívios contemporâneos e os compromissos temporais com a família favorecem a adaptabilidade do jovem órfão em contexto urbano. / The family meal plays a structuring role in social relations, but commensal gatherings of young orphans and their families might be affected in the context of orphaned by HIV/AIDS. As part of a themed research project on Stigma and Discrimination Related to HIV/AIDS, this study was conducted in order to understand all conditioning aspects of family meals and to characterize commensal gatherings of young people orphaned by AIDS in São Paulo. For such, we performed a crosssectional study with qualitative and quantitative approaches from an interdisciplinary perspective between food anthropology, public health and cultural ecology. In the qualitative phase, interviews with 19 young people orphaned by AIDS were used. The narratives were covered in search of contextual categories and synchrony of spatial and temporal gatherings for meals. The quantitative approach was used to sample 276 young people orphaned by AIDS. Descriptive analyzes of the data with frequency distribution were performed and then the Rao Scott test used. Tests were conducted at a significance level of 5% and power of 80%. For these analyzes we used the STATA 10.0 software. The methodologies were complementary and stemmed from the idea of intellectual craft proposed by Wright Mills (2009). The results showed that (1) the family meal reflects the family structure; (2) the meal acts as an axis of family synchrony in spatial and temporal rhythms, and (3) meals reflect changes in contemporary gatherings and family time commitments promote the adaptability of the young orphan in an urban context.

M.Sc. (Aquatic Health) / The North West Province is mineral rich and known for its extensive mining and agricultural activities. These activities drain organic and inorganic pollutants in our waterways, possibly resulting in reduced water quality in dams. Organic and inorganic pollutants such as nutrients, organochlorine pesticides and metals may be present in unacceptable levels possibly affecting fish as well as human health. The North West dams are known for their high nutrient loads and are mostly classified as hypertrophic. In order to better understand the possible effects of the combined pollutant loads on fish health and edibility of fish, (1) a fish health assessment and (2) a human health risk assessment should be conducted. The fish health assessment and the human health risk assessment form an important role in the establishment of water quality standards or/and guidelines for acceptable levels of safe consumption of fish respectively. The aim of this study was to determine (1) if Oreochromis mossambicus from the Klipvoor -, Roodekopjes - and Vaalkop Dams show adverse effects and (2) if consumed, pose a human health risk. The results were compared to the reference site, the Marico-Bosveld Dam.

The objectives of this study were to investigate the difference and interaction of mercury (Hg) and selenium (Se) among fish species and tissues. In addition, by comparing with the detected concentrations in other regions, it would be possible to evaluate the pollution status. In the meanwhile, this study analyzed the edibility of the fish, the interaction between Hg and Se as well as their impacts on fish growth. Ten species of fish, including tenpounder (Elops machnata), fourlined terapon (Pelates quadrilineatus), whipfin silverbiddy (Gerres filamentosus), common ponyfish (Leiognathus equulus), Hamilton's thryssa (Thryssa hamiltonii), tilapia (Orechromis niloticus), western Pacific gizzard shad (Nematalosa come), large-scaled mullet (Liza macrolepis), flathead mullet (Mugil cephalus) and milkfish (Chanos chanos), and 20 sediment samples were collected from September to October of 2003 at the reservoir adjacent to a chlor-alkali plant, which had been abandoned for 22 years in Tainan City. Total mercury (THg) and organic mercury (OHg) concentrations were determined in fish muscles, livers, kidneys, gonads, gills and sediment samples. Besides, Se concentrations were also analyzed in fish muscles and livers. Concentrations (mg/kg dry wt.) of THg and OHg in sediment were 43.2¡Ó23.4(mean¡Ósd) and 0.013¡Ó0.008, respectively. THg, OHg and Se concentrations (mg/kg wet wt.) in fish muscles were 0.432¡Ó0.360, 0.305¡Ó0.206 and 0.126¡Ó0.030, similar to the concentrations in other chlor-alkali polluted regions. With the diet habit of Taiwanese, the Hg concentrations of muscles in the seven fish species exceeded the limit of Hg which was allowed to be consumed by humans. THg and OHg concentrations in the fish muscles showed significant species difference. Obviously, the concentrations in carnivorous fishes were higher than those in omnivorous and herbivorous fishes. The OHg concentrations of fish livers and kidneys were highest in carnivorous fishes, but the THg concentrations were higher in omnivorous fishes than in that of carnivorous and herbivorous fishes. Besides, Se concentrations in fish muscles and livers also showed significant species difference, but did not show relation with the feeding habit of fishes. The Hg levels among fish tissues were highest in livers or kidneys, followed by gonads and muscles, lowest in gills. Generally speaking, Se levels were higher in livers than in muscles. The liver THg concentrations of tilapia reached 10 mg/kg wet wt. Their muscle THg concentrations decreased suddenly and maintained at a level about 0.4 mg/kg wet wt. Meanwhile, the liver inorganic Hg and Se concentrations increased with fish weight, while the liver OHg concentrations did not show such a trend but stay at a low level. High Hg concentrations in the fish tissues resulted in adverse effects on fish health. High Hg concentrations in muscles and livers caused heptasomatic index to decrease in western Pacific gizzard shad and milkfish, and condition factor declined in tilipia. Moreover, gonasomatic index remained low while the Hg concentrations of muscles, livers and gonads reached a threshold, which suggested that the growth of those fishes was likely inhibited in Hg polluted environment.