Submitted to: Journal of Society of Environmental Toxicology and Chemistry
Publication Type: Proceedings
Publication Acceptance Date: 11/16/2000
Publication Date: N/A
Citation: N/A Interpretive Summary:
Technical Abstract: Copper sulfate has historically been used in catfish aquaculture facilities to control bacterial infections and algal blooms; however, little data is available on the effects of CuSO on non-target bota once applied to a pond. To investigate this data gap, sediments were collected from aquaculture ponds and the stream receiving pond effluent at the end of a two year 45 kg CuSO treatment regime. 10 d sediment Hyallella azteca survival and growth assays, as well as 7 d sediment Typha latifolia germination and growth assays were performed to investigate bioavailability of CuCO in the collected samples. No effects were observed in H. azteca or T. latifolia after exposure to collected pond sediments, even though bulk sediment concentrations were as high as 175 mg Cu/kg dry weight. In addition, no effects were observed when the sentinel species were exposed to stream sediments collected at the effluent outfall and upstream from the outfall. Bulk sediment copper concentrations in the steam sedimens were 31 mg/kg dry weight.