Do suspended sediments modulate the effects of octylphenol on rainbow trout?

WATER RESEARCH

卷:43

Article

Juergens, Monika D.¹  Johnson, Andrew C.¹  Pottinger, Tom G.²  Sumpter, John P.³ 

[1] CEH, Wallingford OX10 8BB, Oxon, England

[2] Lancaster Environm Ctr, CEH, Lancaster LA1 4AP, England

[3] Brunel Univ, Inst Environm, Uxbridge UB8 3PH, Middx, England

关键词: Alkylphenols;    Suspended sediments;    Rainbow trout;    Octylphenol;    Endocrine disrupters;    Partition coefficient;   

DOI  :  10.1016/j.watres.2008.12.010

来源: Elsevier

【 摘 要 】

A system was devised which allows particles to remain in suspension in a conventional 60 L aquarium without undue disturbance to resident fish. Using this system, juvenile rainbow trout were exposed for one week to 4-tert-octylphenol (OP, 10-1000 mu g/L) with or without the presence of suspended sediments (10-20 mg/L of natural suspended sediments from the River Calder, UK). About 8% of the added OP partitioned to the solid phase. Vitellogenin levels were determined in the plasma of the exposed rainbow trout and showed a dose-dependent increase with regards to OP exposure concentration. Considerable variation in the vitellogenin response was observed between separate runs with the same OP concentration. There was no statistically significant (at P < 0.05) difference in plasma VTG levels between the OP treatments with or without suspended sediments. This suggests that the dissolved concentration is the key factor and natural suspended sediment neither protects against, nor exacerbates, the endocrine disrupting effect of OP on fish. (C) 2008 Elsevier Ltd. All rights reserved.

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