Effect of cadmium body burdens in adult Crassostrea virginica on fecundity and viability of larvae
Because marine bivalves in general and Crassostrea virginica in particular are good accumulators of metals, a study was performed to determine if embryos from parents with high concentrations of cadmium in soft tissues are more sensitive to cadmium toxicity than those from parents with low tissue cadmium concentrations. In addition, the study was designed to investigate the effect of selected cadmium treatments on larval growth. It was found that despite cadmium concentrations as high as 270 micrograms/gram dry weight in the total soft tissues, oysters spawned heavily. It was generally concluded that seawater cadmium concentrations of 5 micrograms/kg are not toxic to oyster embryos, but does cause enough stress to delay development into larvae.
- Research Organization:
- Environmental Research Lab., Narragansett, RI
- OSTI ID:
- 5886615
- Journal Information:
- Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 27:3; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
CADMIUM
CONTAMINATION
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL TRANSPORT
INVERTEBRATES
LARVAE
MASS TRANSFER
METALS
MOLLUSCS
OYSTERS
QUANTITY RATIO
TOXICITY