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Toxicology Mechanisms and Methods Volume 24, 2014 - Issue 6
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Research Article

Histopathological and genotoxic effects of pollution on Nile Tilapia (Oreochromis niloticus, Linnaeus, 1758) in the Billings Reservoir (Brazil)

Karina Fernandes Oliveira RezendeDepartment of Cell and Developmental Biology, Institute of Biological Sciences, University of São Paulo São PauloBrazilCorrespondence[email protected]
,
Rubens Martins SantosInstitute of Chemistry, University of São Paulo São CarlosBrazil
,
João Carlos Shimada BorgesCollege of Biological Sciences, Paulista University São PauloBrazil;College of Veterinary Medicine, University Center of the United Metropolitan Universities São PauloBrazil
,
Lígia Maria SalvoDepartment of Cell and Developmental Biology, Institute of Biological Sciences, University of São Paulo São PauloBrazil
&
José Roberto Machado Cunha da SilvaDepartment of Cell and Developmental Biology, Institute of Biological Sciences, University of São Paulo São PauloBrazil
Pages 404-411 | Received 27 Mar 2014, Accepted 13 May 2014, Published online: 10 Jun 2014
 
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Abstract

The Billings Reservoir shows eutrophic waters due to the large amount of sewage, and consequently, the fish can be a problem for public health. Thus, this project aimed to analyze the histological gills and liver of Nile tilapia to verify morphological changes caused by environment, and the frequency of micronuclei was done, to observe the response to genotoxic activity. 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.

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