Biochemical, physiological, and histological changes in the neotropical fish Prochilodus lineatus exposed to diesel oil.
Ecotoxicol Environ Saf
; 69(1): 112-20, 2008 Jan.
Article
em En
| MEDLINE
| ID: mdl-17368761
ABSTRACT
Toxicity tests were conducted simulating a diesel oil spill in a tropical environment and juveniles of Prochilodus lineatus were exposed to the water-soluble fraction of diesel oil (WSD) for 6, 24, 96 h, and 15 days. The results showed the activation of biotransformation pathways for xenobiotics, through a time-dependent increase of liver GST activity. WSD caused a decrease in hematocrit and hemoglobin content, very likely due to hemolysis. Furthermore, an increase in glucose levels was observed after acute exposure to WSD. A possible lack of cortisol response could also be associated with WSD, since a reduction in plasma cortisol was seen in fish exposed to the petroleum product for 15 days. Moreover, the occurrence of lesions in the gills and even more severe lesions in the liver, should lead to functional damage to both organs, interfering thus directly with fundamental processes for the maintenance of homeostasis in this fish.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Gasolina
/
Peixes
Limite:
Animals
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Brasil