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

Juergens, Monika D.; Johnson, Andrew C.; Pottinger, Tom G.; Sumpter, John P.. 2009 Do suspended sediments modulate the effects of octylphenol on rainbow trout? Water Research, 43 (5). 1381-1391. 10.1016/j.watres.2008.12.010

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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 µg/L) with or without the presence of suspended sediments (10-20 mg/L; collected 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.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.watres.2008.12.010
Programmes: CEH Programmes pre-2009 publications > Water
CEH Sections: Acreman
ISSN: 1323-1650
Additional Information. Not used in RCUK Gateway to Research.: contact Monika Jürgens, email:
Additional Keywords: alkylphenols, suspended sediments, rainbow trout, octylphenol, endocrine disrupters, partition coefficient
NORA Subject Terms: Biology and Microbiology
Ecology and Environment
Date made live: 10 Mar 2009 09:41

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