Simple Control for Sediment-Toxicity Exposures Using the Amphipod, Hyalella azteca

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 cr...

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Veröffentlicht in:Bulletin of environmental contamination and toxicology 2014-09, Vol.93 (3), p.263-267
Hauptverfasser: Lasier, Peter J, Urich, Matthew L
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-014-1329-z