Sediment-toxicity exposures comparing survival and growth of the freshwater amphipod, Hyalella azteca, are often components of aquatic-habitat assessments. Standardized exposure methods have been established and require evaluations for quality assurance. Test acceptability using performance-based criteria can be determined from exposures to control sediments, which are collected from the environment or formulated from commercially available components. Amending sand with leached alfalfa solids provided a simple formulated sediment that elicited consistently acceptable survival and growth in 28-day exposures with and without a daily feeding regime. A procedure is described for preparing the sediment along with results from comparisons among sand, amended sand, and field-collected sediments that incorporated three feeding regimes.
Additional publication details
|Publication Subtype||Journal Article|
|Title||A simple control for sediment-toxicity exposures using the amphipod, Hyalella azteca|
|Series title||Bulletin of Environmental Contamination and Toxicology|
|Contributing office(s)||Contaminant Biology Program, Patuxent Wildlife Research Center|
|Online Only (Y/N)||N|
|Additional Online Files (Y/N)||N|