PMID: 9419270Feb 28, 1998Paper

Application of a benthic euryhaline amphipod, Corophium sp., as a sediment toxicity testing organism for both freshwater and estuarine systems

Archives of Environmental Contamination and Toxicology
R V Hyne, D A Everett

Abstract

The use of an as-yet-undescribed euryhaline Corophium sp. amphipod as a sediment toxicity testing organism was assessed. The species was found to be ubiquitous in many tidal areas of the Hawkesbury River catchment. The salinity of habitat sites ranged from 0.1 to 24 ppt, sediment total organic carbon (TOC) ranged from 0.4% to 3.5%, and the fines content (< 63 micron particle size) of the sediment ranged from 4.3% to 47.6%. Monitored populations ranged from a density of 59 to 6622 individuals per m2, with freshwater sites with a sediment fines content greater than 20% having the highest population densities. The sensitivity of the Corophium sp. was assessed by using copper chloride and ammonium chloride as reference toxicants in a 96-h static water-only test and a 10-day static sediment test. The LC50 for copper in freshwater-only exposures was 80 to 86 microg/L, using adult animals collected from the field. In contrast, the LC50 for copper in freshwater sediment and the sediment pore water were 840 mg/kg (dry weight) and 99 microg/L, respectively. The LC50 for ammonia (total) in freshwater-only at pH 7 was 5.5 mg/L. In contrast, the LC50 for ammonia (total) in freshwater sediment and the sediment pore water were 110 mg/kg (dry ...Continue Reading

Citations

Jan 26, 2006·Archives of Environmental Contamination and Toxicology·S McCreadyC R Greely
Jun 8, 2002·Ecotoxicology and Environmental Safety·Ross V HyneAnthony C Roach
Nov 14, 2020·Marine Pollution Bulletin·Meng-Chun WuZong-Yo Ho
Nov 12, 2021·PeerJ·Anna Maria JażdżewskaSaskia Brix

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