Premium
Critical body residues in the marine amphipod Ampelisca abdita : Sediment exposures with nonionic organic contaminants
Author(s) -
Fay Amanda A.,
Brownawell Bruce J.,
Elskus Adria A.,
McElroy Anne E.
Publication year - 2000
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620190432
Subject(s) - environmental chemistry , pyrene , polycyclic aromatic hydrocarbon , nonylphenol , bioavailability , chemistry , anthracene , residue (chemistry) , dry weight , pollutant , benzo(a)pyrene , sediment , benzopyrene , biology , organic chemistry , bioinformatics , botany , paleontology
Body residues associated with acute toxicity were determined in the marine amphipod Ampelisca abdita exposed to spiked sediments. Nonylphenol and 2,2′,4,4′‐tetrachlorobiphenyl critical body residues (CBRs, body residue of contaminant at 50% mortality) were 1.1 μmol/g wet tissue and 0.57 μmol/g wet tissue, respectively, values near the low end of the CBR range expected for compounds acting via narcosis. The polycyclic aromatic hydrocarbons tested, benzo[ a ]pyrene (B a P) and benz[ a ]anthracene (B a A), were not acutely toxic at exposure concentrations of up to 43 and 1,280 μg/g dry sediment for B a A and B a P respectively, and body burdens up to 1.2 μmol/g wet tissue (for B a P). Neither polycyclic aromatic hydrocarbon (PAH) was significantly metabolized by A. abdita. The microextraction technique employed here allowed residue analysis of samples containing as few as three amphipods (0.33 mg dry wt). The CBR approach avoids confounding factors such as variations in bioavailability and uptake kinetics and could be employed to assess the relative contribution of specific contaminants or contaminant classes in mixtures to effects observed in toxicity tests with Ampelisca and other organisms.