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USE OF THE AMPHIPOD CRUSTACEAN HYALELLA AZTECA IN FRESHWATER AND ESTUARINE SEDIMENT TOXICITY TESTS
Citation:
Nebeker, A. AND C. Miller. USE OF THE AMPHIPOD CRUSTACEAN HYALELLA AZTECA IN FRESHWATER AND ESTUARINE SEDIMENT TOXICITY TESTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-88/299 (NTIS PB89202239), 1989.
Description:
Hyalella azteca (Saussure), which are currently used in toxicity tests with freshwater sediments, were tested to determine their suitability for tests with estuarine sediments. eproduction was good after 24 d at and below 12.5 g/L (ppt) salinity in water only. C50 values (50% reduction in young) were 10.5 and 10.4 g/L salinity. urvival was good in tests conducted with estuarine sediments collected from a range of freshwater to full seawater sites, using fresh water overlaying the sediments (200 ml sediment, 800 ml water). he results demonstrate that H. azteca can be used to test the toxicity of sediments from both freshwater and estuarine sites.Key Words: Hyaiella azteca, sediment toxicity, fresh water, estuary, salinity