Ecotoxicity of mixtures of metals to the zebra mussel Dreissena polymorpha
- Univ. of Amsterdam (Netherlands). Dept. of Aquatic Ecotoxicology
The effects of equitoxic mixtures of CuCl[sub 2], ZnCl[sub 2], and CdCl[sub 2] on the filtration rate of the freshwater mussel Dreissena polymorpha were determined. The amounts of added metals were expressed in toxic units, and a range of toxic units was tested. Cu + Zn was less than concentration additive, Zn + Cd was concentration additive, and Cu + Cd was more than concentration additive in their effects on the filtration rate of Dreissena polymorpha. An equitoxic mixture of all three metals was concentration additive. The effects of a mixture could not be predicted from the effects of the single metals. The concentrations at which Cu and Cd contributed to the toxicity of a mixture of Cu + Zn + Cd were at or below the NOECs for these metals, determined in single-metal toxicity tests. At low but elevated Cu and Zn concentrations in water, no accumulation of these metals in the mussels took place; Cd, on the contrary, was accumulated at all Cd concentrations in the water.
- OSTI ID:
- 5296756
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Journal Name: Environmental Toxicology and Chemistry; (United States) Vol. 13:1; ISSN 0730-7268; ISSN ETOCDK
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
CADMIUM
COPPER
ELEMENTS
INVERTEBRATES
METALS
MOLLUSCS
MUSSELS
POLLUTION
SENSITIVITY
TOXICITY
TRANSITION ELEMENTS
WATER POLLUTION
ZINC