Morphologic alterations of Nile Tilapia (Oreochromis niloticus) exposed to euthrofized waters of Billings dam.

• Grant number: 09/06777-1
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2009
• End date: July 31, 2011
• Field of knowledge: Biological Sciences - Zoology - Applied Zoology
• Principal Investigator: José Roberto Machado Cunha da Silva
• Grantee: Karina Fernandes Oliveira Rezende
• Host Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The Billings dam shows eutrophic waters due to the large amount of sewage from human occupation, and consequently, the fish can be a public health problem by presenting various types of contamination. The gills and liver become target organs for the action of pollutants in the aquatic environment and may present several levels of biological organization, including structural changes and physiological dysfunctions. 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 aims to analyze the histological gills and liver of Nile tilapia to verify morphological changes caused by environment, by means of measurements and Histological Alterations Index (HAI), the frequency of micronuclei will be done, to observe the response to genotoxic ativity and the eficiency of aninal´s defense fisiological mecanism. The results enable environmental monitoring and quality control of this species.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

OLIVEIRA REZENDE, KARINA FERNANDES; SANTOS, RUBENS MARTINS; SHIMADA BORGES, JOAO CARLOS; SALVO, LIGIA MARIA; MACHADO CUNHA DA SILVA, JOSE ROBERTO. Histopathological and genotoxic effects of pollution on Nile Tilapia (Oreochromis niloticus, Linnaeus, 1758) in the Billings Reservoir (Brazil). TOXICOLOGY MECHANISMS AND METHODS, v. 24, n. 6, p. 404-411, SEP 2014. (09/06777-1)

OLIVEIRA REZENDE, KARINA FERNANDES; SANTOS, RUBENS MARTINS; SHIMADA BORGES, JOAO CARLOS; SALVO, LIGIA MARIA; MACHADO CUNHA DA SILVA, JOSE ROBERTO. Histopathological and genotoxic effects of pollution on Nile Tilapia (Oreochromis niloticus, Linnaeus, 1758) in the Billings Reservoir (Brazil). TOXICOLOGY MECHANISMS AND METHODS, v. 24, n. 6, p. 8-pg., 2014-09-01. (09/06777-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

REZENDE, Karina Fernandes Oliveira. Morphologic alterations of Nile Tilapia (Oreochromis niloticus) (Linnaeus, 1758) exposed to waters of Billings dam.. 2011. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) São Paulo.