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Effects of exposition to polluted environments on blood cells of the fish Prochilodus lineatus

✍ Scribed by Bruno Fiorelini Pereira; Rebeca Mamede Da Silva Alves; Dimitrius Leonardo Pitol; José Augusto Senhorini; Rita De Cássia Gimenes De Alcântara Rocha; Flavio Henrique Caetano

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
364 KB
Volume
75
Category
Article
ISSN
1059-910X

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✦ Synopsis

Abstract

In this study, we investigated the effects of contaminated water on the blood parameters of the fish Prochilodus lineatus exposed during 7 and 20 days. Blood was collected with heparinized syringes, and blood smears were prepared and stained with Leishman stain. Slides were examined and photographed using a Leica light microscope. Total white blood cell counts and differential counts of thrombocytes and leukocytes were obtained for statistical analysis. The group exposed to water samples from Lago Azul exhibited an increase in the number of leukocytes and in the total number of white blood cells, suggesting that the chemical contaminants in this environment were acting similarly to antigens in this fish species, causing the proliferation of defense cells. In the group exposed to detergent during 20 days, the number of thrombocytes decreased. These results suggest that the variations in the number of leukocytes were indicators of environmental pollution and that biodegradable detergents may, after a certain time of exposure, affect vital functions in fish, such as coagulation and prevention of infections, which directly involves thrombocytes. Microsc. Res. Tech., 2012. © 2011 Wiley Periodicals, Inc.

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