Banca de QUALIFICAÇÃO: ALEXANDRE ENDRES MARCON

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.

DISCENTE: ALEXANDRE ENDRES MARCON

DATA: 27/08/2010

HORA: 14:00

LOCAL: Centro de Biociencias

TÍTULO:

Genotoxic analysis in aquatic environment under influence of cyanobacteria, metal and radioactivity


PALAVRAS-CHAVES:

Genotoxicidade, recursos hídricos, cianobactérias, radiação beta, alterações nucleares


PÁGINAS: 8

GRANDE ÁREA: Ciências Biológicas

ÁREA: Biologia Geral

RESUMO:

The micronucleus (MN) and nuclear abnormality (NA) tests were employed to evaluate the genotoxic potential of the Lucrecia dam (RN, Brazil) located in a semi-arid region and influenced by crop irrigation and irregular rainfall. The analyses of these water samples demonstrated the presence of several cyanobacteria as well as metals and radioactivity. The Nile Tilapia (Oreochromis niloticus) was used for micronucleus and nuclear abnormality assays and analysis of metal concentrations in gills and liver samples. Genotoxic assays in source water fish showed a significant increase in the frequency of nuclear damage (MN and NA) in relation to the negative control group. In conclusion, the results obtained with water surface and biological samples from the Lucrecia dam suggest that this important water resource contains a number of chemical and microbiological pollutants with genotoxic potential and that these substances may be compromising the species inhabiting this ecosystem. Particular care must be taken to prevent further degradation of this water supply


MEMBROS DA BANCA:
Interno - 2195251 - HUGO ALEXANDRE DE OLIVEIRA ROCHA
Presidente - 1199127 - SILVIA REGINA BATISTUZZO DE MEDEIROS
Externo ao Programa - 1674709 - VIVIANE SOUZA DO AMARAL
Notícia cadastrada em: 20/08/2010 09:15
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