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| Author(s): |
Isabella Cristina da Costa Leal Bordon
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Pesquisas Energéticas e Nucleares (IPEN/BT) |
| Defense date: | 2014-04-11 |
| Examining board members: |
Jorge Eduardo de Souza Sarkis;
Denis Moledo de Souza Abessa;
Ronaldo Adriano Christofoletti;
Tania Marcia Costa;
Déborah Inês Teixeira Fávaro
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| Advisor: | Jorge Eduardo de Souza Sarkis |
| Abstract | |
This study aimed to develop a new methodology for the use of a biomonitor in the identification of metal discharges in environmental evaluations. Crabs of Callinectes danae species were used in an evaluation conducted in the Santos Estuarine System. In the first experiment and since C. danae is a benthic species, a preliminary assessment of the metal concentrations in sediment samples collected in the Santos Estuarine System was performed. Subsequently, a preliminary assessment of metal concentrations in the C. danae tissues was also peformed. The last experiment aimed to identify a chemical fingerprint for the Santos Estuarine System.The development of validation procedures for this model (chemical fingerprint) was conducted and aimed to test: 1) the stability of this model through time; 2) its local specificity for the Santos Estuarine System; 3) the sensibility of this model due to modifications in the metal concentrations in each tissue (gills, hepatopancreas and muscles). By the use of this model, it was possible to identify the sources of metal emissions. According to the results, C. danae can be used as a biomonitor for the Santos Estuarine System. The established model was able to responde in a positive-conclusive way to all the tests performed in its validation, confirming this species as a definitive biomonitor for this area. Thus, the stability of this model will increase with new sampling campaings and consequently introduction of new information in the database. (AU) | |
| FAPESP's process: | 10/01902-0 - Individuals of the family Portunidae (crab) as definitive biomonitors for identification of emission sources |
| Grantee: | Isabella Cristina da Costa Leal Bordon |
| Support Opportunities: | Scholarships in Brazil - Doctorate |