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| Author(s): |
Karina Fernandes Oliveira Rezende
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) |
| Defense date: | 2011-07-20 |
| Examining board members: |
Jose Roberto Machado Cunha da Silva;
Maria Ines Borella;
Idercio Luiz Sinhorini
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| Advisor: | Jose Roberto Machado Cunha da Silva |
| Abstract | |
The Billings dam shows eutrophic waters due to the large amount of sewage from urban occupation neaby, and consequently, the fish can be a public health problem. The gills and liver become target organs for the action of pollutants in the aquatic environment and may present several levels of biological organization. These biological responses to stress caused by pollutants can be used to identify early signs of damage to fish and can be called biomarkers. Thus, this project aimed to analyze the histological gills and liver of Nile Tilapia, by means of measurements, Histological Alterations Index and Assessment Medium Value; the frequency of micronuclei was done. We observed histological alterations in gills and livers of Nile Tilapia classified as mild to severe, and the presence of micronucleus. The results enable better environmental monitoring and quality control of this species. (AU) | |
| FAPESP's process: | 09/06777-1 - Morphologic alterations of Nile Tilapia (Oreochromis niloticus) exposed to euthrofized waters of Billings dam. |
| Grantee: | Karina Fernandes Oliveira Rezende |
| Support Opportunities: | Scholarships in Brazil - Master |