Under increase of human population, the use of nonrenewable resources has been
broadly used. The hydroelectric power plants building, the rise up native forests
deforestation for timber resources, cattle beef grazing and agribusiness are causing
serious environmental troubles, such as the Global Warming intensification and water
resources pollution. The hydroelectric dams building not only in the Amazon, but also
in other sites around the world causes troubles due to the reservoir formation, rivers and
lakes eutrophication as well as ease the bioaccumulation and biomagnification at native
species. Thus, the target of this Academic Study is analyzing the exposure of Cichla
melaniae (tucunaré) at four collection points, inside and outside the Belo Monte
Hydroelectric Power Plant reservoir over possible damage by environmental
contamination. It was analyzed through micronucleus (MN) test 1000 erythrocytes per
fish, with 100x magnification under an optical microscope, the slides were stained with
5% Giemsa. Among the collection points there was no significant difference for the NM
test. For the nuclear anomalies, it was not possible to observe many variations among
the collection points, but the point VG1 presented a greater variation for invagination,
compared to the other points. Revealing that areas under the influence of Hydroelectric,
Gold Mining and Agriculture can have changes in their ecosystem and cause genotoxic
effects on native species.
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