期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 399, 期 1-3, 页码 28-32出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2008.03.021
关键词
PBDE-47; brominated flame retardant; grass shrimp; biomarker
This study examined the effects of a polybrominated diphenyl ether (PBDE) compound, PBDE-47, on adult and larval stages of the estuarine grass shrimp (Palaemonetes pugio). The 96-h LC50 test resulted in an estimate of 23.60 mu g/L (95% confidence interval = 14.51-38.37 mu g/L) for larval shrimp. Adult shrimp had a higher 96-h LC50 of 78.07 mu g/L (95% CI = 65.1-93.63 mu g/L). Four physiological biomarkers glutathione (GSH), lipid peroxidation (LPx), cholesterol (CHL) and acetylcholinesterase (AChE) were then assessed to study the sublethal effects of PBDE-47 exposure. GSH, LPx and AChE levels in both adults and larvae were not affected by PBDE-47 at concentrations up to 50 mu g/L for 96 h. CHL levels were elevated in adults and larvae at the lowest exposure concentrations tested, but significant differences were found only in adult exposures. Effects associated with PBDE-47 aqueous exposures were observed at levels well above those reported in the environment. Published by Elsevier B.V.
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