Artículos de revistas
Cytogenotoxicity biomarkers in fat snook Centropomus parallelus from Cananeia and Sao Vicente estuaries, SP, Brazil
Fecha
2009-01-01Registro en:
Genetics and Molecular Biology. Ribeirao Pret: Soc Brasil Genetica, v. 32, n. 1, p. 151-154, 2009.
1415-4757
S1415-47572009000100023
WOS:000263377700023
S1415-47572009000100023-en.pdf
2842419319556542
Autor
Univ Santa Cecilia
Universidade de São Paulo (USP)
Inst Pesca
Ctr Univ Sao Camilo
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The aquatic environment receives many contaminants that can induce damages at the molecular, biochemical, cellular and physiological levels. Centropomus parallelus, an important food resource for local populations, is a predator fish that feeds on small fishes and benthic invertebrates, thus being vulnerable to the bioconcentration and biomagnification processes. This study aimed to evaluate cytogenotoxic responses in erythrocytes from C. parallelus juveniles collected in the Cananeia and Sao Vicente estuaries, both in winter and in summer. After anesthesia, blood samples were collected by caudal puncture. Blood smears were prepared on glass slides and stained with May-Grunwald-Giemsa dye. Two thousand cells were analyzed per slide (1000x), and nuclear abnormalities (NA) and micronuclei (MN) were scored. The Sao Vicente sample showed MN and NA frequencies (%/1000 cells) of 0.325 and 3.575, in winter, and of 0.125 and 2.935 in summer respectively; the Cananeia sample showed frequencies of 0.0325 and 0.03, in winter, and of 0.065 and 0.355 in summer, respectively. The rates found in Sao Vicente were significantly higher than those found in Cananeia, evidencing that the levels of pollution in that estuary were high enough to induce genetic damages.