Abstract
Some compounds of environmental interest were investigated using the toxicity test with early life stage of bivalve molluscs. Three pesticides (Carbofuran, Atrazine and Malathion), for which literature data are available only for some species of oysters, were tested with Mytilus galloprovincialis (Lmk). The toxicity of copper was investigated both with M. galloprovincialis and with Crassostrea gigas (Thunberg). Bioassays highlighted a good sensitivity towards the compounds, with EC50 values in the order of mg l-1 for the pesticides and ofμg l-1 for copper. Comparison with other toxicity tests for aquatic environments showed that embryotoxicity test with bivalve is slightly more sensitive than embryotoxicity test with the sea urchin Paracentrotus lividus (Lmk), remarkably more sensitive than Microtox® test but less sensitive than tests with the copepod Tigriopus brevicornis.
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