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Biomonitoramento por crassostrea rhizophorae (Guilding, 1828) e percepção de risco socioambiental na Baía de Todos os Santos, Bahia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mamede, Tainã Cádija Almeida |
| Copyright Year | 2012 |
| Abstract | Baia de Todos os Santos BTS includes coastal environments which consist of various ecosystems vulnerable to activities related to urban expansion and development on an industrial scale. Fishing communities suffer increasing restriction of coastal areas and / or coastal or environmental impacts caused by the progress of these activities. The oyster, mussel, possesses filter feeding, which can adsorb and bioaccumulate human pathogens and chemical contaminants in general, and therefore used in environmental monitoring of impacted areas. The objective of this study was to monitor the concentrations of copper (Cu), zinc (Zn), cadmium (Cd) and iron (Fe) in oysters transplanted from one culture located in the Bay Marine Extractive Reserve Iguape (IGP) to an estuary subject to intense industrial activity São Paulo (RSP) (n = 82), and assess the environmental risk perception by the community of shellfish that live in industrial influence on BTS Candeias. Concentrations of Zn, Cu, Cd and Fe (mg.kg-1) were determined in oyster tissues by atomic absorption (FAAS). Just prior to withdrawal of the tissues in these individuals tested the adequacy of the retention test of neutral red (NRRT) to evaluate the stability of the lysosomal membrane in hemocytes as a biomarker of effect. The results were treated differently on scientific articles. Initially the application was made the test of retention of neutral red with oyster hemocytes trasnplantadas (RSP) and residents (PGI). The adequacy of the oyster Crassostrea rhizophorae method was effective. Despite the retention time of neutral red by transplanted oysters have been lower compared to oyster resident of PGI (p <0.05) can not affirm that there is some abnormality in this environment environment. In Article 2 the concentrations of metals found in the tissue of the oyster and transplanted residents were correlated with the biological variables of the body. The technique "transplant" in the period established exposure of 180 and 270 days was effective in the investigation of correlations between variables. Finally, the perception of environmental risk was assessed using semi-structured interviews (n = 22) with seafood restaurants that perform extraction of shellfish in the region of Passe-Candeias. The data obtained demonstrate that the perception of risk is easily identified by the seafood from the ratio of shellfish activities with the crises arising from industrial action. Exposure (hrs / day) to the mangrove via dermal contact is influenced by the tide, which they classified as "Cedeira and tardeira. The study also warns about potential risks to human health arising from consumption of oysters site as well as the inclusion of risk perception by the community in environmental studies, thus strengthening the link between popular and scientific knowledge. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repositorio.ufba.br/ri/bitstream/ri/7257/1/dissertacao_Taina_Mamede.PDF |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
