The Toxicity of Laboratory Burned Oil to the Amphipod Allorchestes compressa and the Snail Polinices conicus |
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| Institution: | 1. U.S. Environmental Protection Agency, Office of Research and Development (E343-04), Research Triangle Park, NC 27711, USA;2. The Penn State University, John and Willie Leone Family Dept. of Energy and Mineral Engineering Department and the EMS Energy Institute, University Park, PA 16802, USA;1. Departament de Bioquímica i Biologia Molecular, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona and CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 08028 Barcelona, Spain;2. Cardiology Department, Thorax Institute, Hospital Clínic, Institut d''Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Spain |
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| Abstract: | Acute 96 h LC50 values of the burned-oil–water-accommodated-fraction (BWAF) and burned-oil-residue-mixture (BRM) were determined in semi-static bioassays with seawater, using the amphipod Allorchestes compressa (Dana). Sublethal bioassays (suppression of burying behaviour over 30 min and 24 h exposure) were also conducted for these toxicants, using the marine sand snail Polinices conicus (Lamarck) as the test organism.The mean (n=4) 96 h LC50 (S.E.) value for BWAF was 80 (4.1)% and for BRM was greater than 100%. No-observed-effect-concentration (NOEC) and lowest-observed-effect-concentration (LOEC) for the both toxicants were 40% and 60% respectively. The burying behaviour of the snails after 30 min exposure to both toxicants was not affected with NOEC values greater than 100%. The 24 h EC50 (S.E.) value for BWAF was 60 (2.7)% with 10% NOEC and 20% LOEC values. The respective 24 h EC50 value for BRM was greater than 100% with 40% NOEC and 60% LOEC values. |
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