Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 65, Issue 3, Pages 306-313Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2005.08.010
Keywords
sediment; elutriate; elutriation ratios; toxicity bioassays; sea urchin; Paracentrotus lividus; oyster; Crassostrea gigas; confounding factors
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Methodological research was carried out to evaluate the discriminatory capability of three toxicity bioassays toward different elutriation ratios (1:4, 1:20, 1:50, and 1:200 sediment:water ratios). Samples from six sampling stations of the Lagoon of Venice have been investigated. The toxicity bioassay results (sea urchin Paracentrotus lividus Link sperm cell and embryo toxicity bioassays and bivalve mollusk Crassostrea gigas Thunberg embryo toxicity bioassays) have shown that elutriates generated from the widely used 1:4 ratio were less toxic than those from intermediate ratios (1:20 and 1:50). (c) 2005 Published by Elsevier Inc.
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