| mobility and potential toxicity of sediment-bound metals in a tidal estuary. | sediment toxicity in the gironde estuary, france, a site contaminated by such trace metals as cd, cu, and zn, was examined monthly from march to october 1997, using concurrently geochemical procedures to assess the mobility of contaminants and ecotoxicity tests with invertebrate larvae (the oyster crassostrea gigas, the sea urchin paracentrotus lividus, and the copepod tigriopus brevicornis). higher mobility of cd than of cu and zn was shown by desorption tests. both the gross concentrations of ... | 2005 | 16007661 |
| sensitivity of embryotoxicity test with mytilus galloprovincialis (lmk) towards some compounds of environmental interest (copper and pesticides). | 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 t ... | 2004 | 15346866 |
| mortality and lc50 values for several stages of the marine copepod tigriopus brevicornis (müller) exposed to the metals arsenic and cadmium and the pesticides atrazine, carbofuran, dichlorvos, and malathion. | the toxicity of three insecticides (carbofuran, dichlorvos, malathion), an herbicide (atrazine), and two metals (arsenic and cadmium) to ovigerous females, copepodids, and nauplii of tigriopus brevicornis was determined by 96-h semistatic (or static-renewal) bioassays. freshly prepared aqueous stock solutions of these pesticides and metals were diluted to appropriate concentrations. mortalities were recorded and test solutions were changed completely each day up to 96 h. the rate of mortality wa ... | 1998 | 9679687 |