Artículos de revistas
Intranuclear crystalloids of Antarctic sea urchins as a biomarker for oil contamination
Fecha
2010Registro en:
POLAR BIOLOGY, v.33, n.6, p.843-849, 2010
0722-4060
10.1007/s00300-009-0762-7
Autor
BORGES, Joao Carlos Shimada
BRANCO, Paola Cristina
PRESSINOTTI, Leandro Nogueira
SEVERINO, Divinomar
SILVA, Jose Roberto Machado Cunha da
Institución
Resumen
Because of human actions, biomarkers have become important to detect and mitigate pollution. This study showed that crystalloids can be a biomarker for analyses of low levels of water-soluble fractions of oil (WSF). Antarctic sea urchins (Sterechinus neumayeri) from regions free of pollution were exposed for 2, 5, 10 and 15 days at different levels of WSF (0.4, 0.8 and 1.2 ppm). No significant differences were observed in the phagocytic rates or the germicide capacity for the yeast Saccharomyces cerevisiae; however, there was a significant increase in the quantity of intranuclear iron crystalloids in phagocytic amoebocytes of urchins exposed to higher levels of WSF. This study characterizes histological alterations in crystalloids of S. neumayeri that could be used as a biomarker for oil contaminants, with a simple and inexpensive protocol.